MAX3874EVKIT中文资料

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SD387EVKNOPB;中文规格书,Datasheet资料

SD387EVKLMH0387 Evaluation Board User Guide National Semiconductor EVK User ManualApril 29, 2010OverviewThe SD387 Evaluation Kit (EVK) enables evaluation of the LMH0387 3G/HD/SD SDI Configurable I/O Adaptive Cable Equalizer / Cable Driver. A graphical user interface allows managing the SPI registers for the input mode (equalizer), and can also be used to control the device’s I/O mode.Evaluation Kit (SD387EVK) ContentsThe EVK contains the following parts:•SD387EVK board assembly with the LMH0387 configurable I/O•SPA dongle (SPIÆUSB card)• USB cable•6-pin parallel cable• SD387EVK User GuideEvaluation Board DescriptionFigure 1 shows the SD387 evaluation board and highlights some of its features.FIGURE 1. SD387 Evaluation BoardInputs and Outputs: BNC_IO Input/Output, SDI Input, and SDO OutputThe bidirectional I/O (J1) is a 75Ω BNC connector. When the LMH0387 is configured as an input, the input signal on the BNC_IO pin should conform to the SMPTE 424M, SMPTE 292M, or SMPTE 259M standards. When the LMH0387 is configured as an output, the BNC_IO pin will drive SMPTE SDI signal levels (800 mV P-P into 75Ω).The SDI input connectors (J2 and J3) are 50Ω SMA connectors. This cable driver input includes a 100Ω differential termination resistor (R5) at the LMH0387 device and is optimized for 100Ω differential input.The SDO output connectors (J4 and J5) are 50Ω SMA connectors. When using only one side of this equalizer output pair, the other side should be terminated with a 50Ω SMA termination. For example, when only using theSDO output, SDO¯¯¯¯ should be terminated with a 50Ω SMA termination.DC Power ConnectorsThe VCC and GND power connectors should be powered with a DC input voltage of 3.3V ± 5% (3.6V maximum).JP2 ControlsCD ¯¯¯JP2 allows monitoring of the Carrier Detect (CD¯¯¯ ) at the BNC_IO pin while in the input mode (equalizer). CD ¯¯¯ is asserted low when an input signal is detected at the BNC_IO pin, and high when no input signal is present. TX_ENJP2 allows control of the TX_EN pin to enable or disable the cable driver. The LMH0387 TX_EN pin has aninternal pullup to enable the cable driver by default, so this pin may be left unconnected when using the LMH0387 in the output mode. To disable the cable driver, place a jumper to tie TX_EN to GND. When using the LMH0387 in the input mode, the cable driver must be disabled by tying TX_EN low. TX_EN may optionally be controlled via the GUI using the SPA dongle as described below. SD/HD¯¯¯ JP2 allows control of the SD/HD¯¯¯ pin for setting the slew rate for the BNC_IO pin while the LMH0387 is in the output mode (cable driver). This pin may be connected to GND for the faster HD/3G slew rate or connected to V CC for theslower SD slew rate. The LMH0387 SD/HD¯¯¯ pin has an internal pulldown to enable the HD/3G slew rate by default.SPI Header (JP1)JP1 is the SPI (Serial Peripheral Interface) header. It allows access to the SPI pins (SS ¯¯¯ , MISO, MOSI, and SCK) to control the SPI registers of the LMH0387 equalizer. To use the SPI interactive GUI, plug the 6-pin parallel cable between this header and JP7 on the SPA dongle to connect the pins one-for-one as shown in Table 1. The SPA dongle requires special software and must be connected to the PC via the USB – see the Software Setup section.TABLE 1. SPI Connections between SD387 and SPA DongleSD387 JP1 SPA Dongle JP7 Pin # Name Pin # Name1 GND Æ 1 GND2 SCK Æ 2 MCK3 MOSI Æ 3 MOSI4 MISO Æ 4 MOSI5 SS Æ 5 SS6 GND Æ 6 GNDCarrier Detect LED (D1)D1 shows the status of Carrier Detect at the LMH0387 equalizer input. This LED is GREEN when an input signal has been detected at the BNC_IO pin, and OFF when no input is detected.SPA Dongle DescriptionThe SPA dongle is required to use the SPI interactive GUI. The SPA dongle connects between the LMH0387 SPI pins and the USB input of a PC. The SPA dongle is shown in Figure 2. JP7 is the SPI Header. The SPA dongle is powered through the USB, and the D1 LED is RED when the SPA dongle is connected to a PC via the USB to indicate the board is powered.FIGURE 2. SPA DongleFigure 3 shows the connection between the SD387 and the SPA dongle. For proper operation, the SPI pins must be connected between the SD387 JP1 and the SPA dongle JP7. Optionally, a single wire may be connected between the SD387 TX_EN pin (JP2) and the SPA dongle PA0 (J7) to enable software control of the LMH0387 cable driver enable functionality, and allow the GUI to fully control the LMH0387 I/O Mode as described on page 8. If this connection is not used, then the TX_EN can be controlled manually with a jumper.FIGURE 3. SD387 Connection to SPA DongleSoftware SetupSystem RequirementsOperating System:Windows XP or VistaUSB: 2.0InstallationDownload the latest software from the LMH0387 Evaluation Board page. Extract the ALPF_monthdayyear_major version_minor version.exe” (ex. ALPF_04062010_128_0002.exe) file to a temporary location that can be deleted later.Make sure the SPA dongle is not connected to the PC. The following installation instructions are for the Windows XP Operating System.Install the ALP softwareExecute the ALP Setup Wizard program called “ALPF_monthdayyear_major version_minor version.exe” (ex. ALPF_04062010_128_0002.exe) that was extracted to a temporary location.There are 7 steps to the installation once the setup wizard is started:1. Select the “Next” button.2. Select “I accept the agreement” and then select the “Next” button.3. Select the location to install the ALP software and then select the “Next” button.4. Select the location for the start menu shortcut and then select the “Next” button.5. There will then be a screen that allows the creation of a desktop and Quick Launch icon. After selectingthe desired choices select the “Next” button.6. Select the “Install” button, and the software will then be installed to the selected location.7. Uncheck “Launch Analog LaunchPAD” and select the “Finish” button. The ALP software will start if“Launch Analog LaunchPAD” is checked, but it will not be useful until the USB driver is installed.Connect JP1 of the SD387 evaluation board to JP7 of the SPA dongle via the 6-pin parallel cable as shown in Table 1. Power on the SD387 evaluation board with a 3.3 VDC power supply. Connect the SPA dongle to the PC with the USB cable. The “Found New Hardware Wizard” will open on the PC. Proceed to the next section to install the USB driver.Install the USB driverThere are 6 steps to install the USB driver:1. Select “No, not at this time” then select the “Next” button.2. Select “Install from a list or specific location” then select the “Next” button.3. Select “Search for the best driver in these locations”. Uncheck “Search removable media” and check“Include this location in the search”.4. Browse to the Install Directory which is typically located at “C:\Program Files\National SemiconductorCorp\Analog LaunchPAD\vx.x.x\Drivers” and select the “Next” button. Windows should find the driver.5. Select “Continue Anyway”.6. Select the “Finish” button.The software installation is complete. The ALP software may now be launched, as described in the next section.Software DescriptionStartupMake sure all the software has been installed and the hardware is powered on and connected to the PC. Execute “Analog LaunchPAD” from the start menu. The default start menu location is “Programs\National Semiconductor Corp\Analog LaunchPAD vx.x.x\Analog LaunchPAD”.The application should come up in the state shown in Figure 4 below. If it does not, see “Trouble Shooting” at the end of this document. Click on “LMH0387 – Nano” to select the device and open up the device profile and its associated tabs.FIGURE 4. ALP Startup Screen for the LMH0387Information TabThe Information tab is shown in Figure 5.FIGURE 5. LMH0387 Information TabFunctional TabThe Functional tab is the main tab of the GUI and presents a high level view of the LMH0387 equalizer, as shownin Figure 6.I/O Mode Controlprovided an additional wire is connected between the SD387 TX_EN and theSPA dongle PA0, as shown in Figure 3. The connection between TX_EN andPA0 allows software control of the LMH0387 cable driver enable functionality.If the SD387 TX_EN is not connected to the SPA dongle PA0, then TX_ENmay be controlled manually with a jumper and the I/O Mode Control will have no effect on the LMH0387 cable driver.The default LMH0387 I/O Mode setting is the Input (Rx) Mode, or equalizer mode. This default setting allows full control of the LMH0387 equalizer. The three I/O modes are described below.Input (Rx) Mode: Configures the LMH0387 for the input mode (equalizer enabled and cable driver disabled). This is the default setting. The LMH0387 equalizer is set to auto sleep, and if TX_EN is connected to PA0, then PA0 will drive TX_EN low to disable the LMH0387 cable driver. If this TX_EN Æ PA0 connection is not made, then the LMH0387 cable driver should be manually disabled by setting a jumper to tie TX_EN to GND.Output (Tx) Mode: Configures the LMH0387 for the output mode (cable driver enabled and equalizer disabled). The LMH0387 equalizer is forced to sleep. If TX_EN is connected to PA0, then PA0 will drive TX_EN high to enable the LMH0387 cable driver. If this TX_EN Æ PA0 connection is not made, then the LMH0387 cable drivershould be manually enabled by pulling the jumper between TX_EN and GND (TX_EN should be open).Tx Loopback Mode: Configures the LMH0387 for the output mode with a loopback path (cable driver andequalizer both enabled). The LMH0387 equalizer is set to auto sleep. If TX_EN is connected to PA0, then PA0 will drive TX_EN high to enable the LMH0387 cable driver. If this TX_EN Æ PA0 connection is not made, then theLMH0387 cable driver should be manually enabled by pulling the jumper between TX_EN and GND (TX_EN should be open). In this mode, the cable driver output on the BNC_IO pin is looped back to the LMH0387 equalizeroutputs (SDO and SDO¯¯¯¯ ), so the cable driver output may be observed both at BNC_IO pin and at the SDO/SDO ¯¯¯¯ output pins.The Cable Driver TX_EN indicator shows the current status of the TX_EN control (only if TX_EN is connected to PA0). It is GREEN to indicate TX_EN is driven high and the LMH0387 cable driver is enabled, or OFF to indicate TX_EN is driven low and the LMH0387 cable driver is disabled.Equalizer Sleep Mode and Carrier DetectThe Equalizer Sleep Mode control shows the status of the Sleep Mode register bits and allows control over the sleep mode. The Equalizer Sleep Mode settings are as follows:On: Force the equalizer into sleep mode (powered down) regardless of whether there is an input signal or not.Off: Disable sleep mode (force equalizer to stay enabled).Auto: Sleep mode active when no input signal detected (default mode).The Equalizer Sleep Status indicator shows the current sleep status of the equalizer. It is GREEN to indicate sleeping or OFF to indicate not sleeping.The Carrier Detect shows the status of the BNC_IO input carrier detect. It is GREEN to indicate the input signal is present or OFF to indicate the input signal is absent.Equalizer Output SwingThe Equalizer Output Swing control shows the current value of the LMH0387 equalizer output amplitude and allows adjustment in 100 mV increments from 400 mV P-P to 800 mV P-P . The default setting is 700 mV P-P . The Equalizer Output Swing may be set either by clicking on the “+” or “-” buttons, or by grabbing and spinning the “handle” on the knob for a quick adjustment.Equalizer Output OffsetThe Equalizer Output Offset control shows the current value of the LMH0387 equalizeroutput common mode voltage and allows adjustment in 200 mV increments from 1.05Vto 1.85V. At the “Max” setting, the outputs are referenced to the positive supply and theoutput common mode is 2.1V. The default setting is 1.25V. The Equalizer Output Offsetmay be set either by clicking on the “+” or “-”buttons, or by grabbing and spinning the“handle” on the knob for a quick adjustment.Equalizer Output MuteThe Equalizer Output Mute indicator shows the mute status, and the button may be used totoggle the mute function. The indicator is GREEN to indicate mute (equalizer outputs aremuted) and OFF to indicate normal mode (outputs are not muted).Extended 3G Reach ModeThe Extended 3G Reach Mode indicator shows the status of the Extended 3G ReachMode register bit, and the button may be used to toggle this register bit. The indicator isGREEN when the bit is set for extended 3G reach mode, and OFF when the equalizer isset for normal mode. Note that the indicator shows the status of the register bit – notwhether the device is actually in extended 3G reach mode or not. If extended 3G reachmode is set, the equalizer will remain in this mode until the input cable is physically changed or power is cycled. For example, extended 3G reach mode is forced, and then it is turned off. The indicator will show it is off, but the equalizer will still be in extended 3G reach mode until the input cable is changed or the device power is cycled. The GUI provides a simple way to reset the extended 3G reach mode: the Extended 3G Reach Mode Reset button. This button toggles the equalizer sleep mode, and has a similar effect to removing and re-applying the input cable.分销商库存信息: NATIONAL-SEMICONDUCTOR SD387EVK/NOPB。

MAX40108 EV Kit 产品说明书

MAX40108EVKIT#Evaluates: MAX40108MAX40108 Evaluation Kit General DescriptionThe MAX40108 evaluation kit (EV kit) provides a proven design to evaluate the MAX40108 precision, low-noise, low-drift dual-operational amplifier in a 6-bump wafer-level package (WLP). The EV kit circuit is preconfigured as noninverting amplifiers, but can be adapted to other topologies by changing a few components.The EV kit comes with a MAX40108ANT+ installed.Features●Accommodates Multiple Op Amp Configurations ●Component Pads Allow for Sallen-Key Filter ●Accommodates Easy-to-Use Components ●Proven PCB Layout ●Fully Assembled and TestedQuick StartRequired Equipment●MAX40108 EV kit●+0.9V to +3.6V, 20mA DC power supply (PS1) ●Precision voltage source ●Digital multimeterProcedureThe EV kit is fully assembled and tested. Follow the steps below to verify board operation:1) Verify that all jumpers (JU1–JU3) are in their defaultpositions, as shown in Table 1.2) Set the power supply to 1.5V. Connect the positiveterminal of the power supply to V CC and the negative terminal to GND and V SS .3) Connect the positive terminal of the precision volt-age source to INP . Connect the negative terminal of the precision voltage source to GND. INM is already connected to GND through jumper JU1.4) Connect the DMM to monitor the voltage on OUT . Withthe 10kΩ feedback resistors and 1kΩ series resistors, the gain of the noninverting amplifier is +11V/V .5) Turn on the power supply.6) Apply 100mV from the precision voltage sources.Observe the output at OUT on the DMM that reads approximately +1.1V.Note: For dual-supply operation, a ±0.45V to ±1.8V sup -ply can be applied to V DD and V SS , respectively. The rest of the procedure remains the same as that of the single-supply operation.To shut down during dual-supply operation, connect JU3 (pin 2) to V SS . Do not use the JU3, 2-3 jumper placement.319-100550; Rev 0; 6/20Ordering Information appears at end of data sheet.Click here to ask about the production status of specific part numbers.Evaluates: MAX40108MAX40108 Evaluation Kit Detailed Description of HardwareThe MAX40108 EV kit provides a proven layout for precision, low-noise, low-drift op amp. The device is a single/dual-supply op amp with rail-to-rail inputs and outputs, available in 6-bump WLP (1.22mm x 0.92mm) space-saving package.The default configuration for the device in the EV kit is single-supply operation in a noninverting configuration. However, the device can operate with a dual supply as long as the voltage across the V DD and V SS pins of the IC do not exceed the absolute maximum ratings. When operating with a single supply, short V SS to GND.Op Amp ConfigurationsThe device is a single/dual-supply op amp that is ideal for differential sensing, noninverting amplification, buffering, and filtering. A few common op amp configurations are explained in the next few sections.Noninverting ConfigurationThe EV kit comes preconfigured as a noninverting amplifier. The gain is set by the ratio of R5 and R1. The EV kit comes preconfigured for a gain of +11V/V. The output voltage for the noninverting configuration is given by the equation below:OUTA INAP OS R5V (1)V V R1=+±Inverting ConfigurationTo configure the EV kit as an inverting amplifier, remove the shunt on jumper JU1, install a shunt on jumper JU2, and feed an input signal on the INM PCB pad.Differential AmplifierTo configure the EV kit as a differential amplifier, replace R1–R3 and R5 with appropriate resistors. When R1 = R2 and R3 = R5, the CMRR of the differential amplifier is determined by the matching of the resistor ratios R1/R2 and R3/R5.V OUTA = GAIN(V INP − V INM )where:R5R3GAIN R1R2==Sallen-Key ConfigurationThe Sallen-Key topology is ideal for filtering sensor signals with a second-order filter and acting as a buffer. Schematic complexity is reduced by combining the filter and buffer operations. The EV kit can be configured in a Sallen-Key topology by replacing and populating a few components. The Sallen-Key topology can be configuredas a unity-gain buffer by replacing R5 with a 0Ω resistor and removing resistor R1. The signal is noninverting and applied to INP . The filter component pads are R2–R7 and R8, where some have to be populated with resistors and others with capacitors.Lowpass Sallen-Key Filter: To configure the Sallen-Key as a lowpass filter, remove the shunt from jumper JU1, populate the R2 and R8 pads with resistors, and populate the R3 and R7 pads with capacitors. The corner frequencyand Q are then given by:C R3R2R8f Q ==Highpass Sallen-Key Filter: To configure the Sallen-Key as a highpass filter, remove the shunt from jumperJU1, populate the R3 and R7 pads with resistors, and populate the R2 and R8 pads with capacitors. The cornerfrequency and Q are then given by:C R7R2R8f Q ==Bandpass Sallen-Key Filter: To configure the Sallen-Key as a bandpass filter, remove the shunt from jumper JU1, replace R8, populate the R3 and R7 pads with resistors, and populate the C8 and R2 pads with capacitors. Thecorner frequency and Q are then given by:()C R5R7R8C8R2R3R2R7R8R1f Q RR R C C R C (R R )R ==++−Evaluates: MAX40108 MAX40108 Evaluation KitTransimpedance Amplifier (TIA)To configure the EV kit as a TIA, place a shunt on jumper JU2 and replace R1 with 0Ω resistors. The output voltage of the TIA is the input current multiplied by the feedback resistor:V OUT = −(I IN + I BIAS) × R R5 ±V OSwhere:I IN is the input current source applied at the INP testpointI BIAS is the input bias currentV OS is the input offset voltage of the op ampUse a capacitor and 0Ω resistor at location R10 or R17 (and C8, if applicable) to stabilize the op amp by rolling off high-frequency gain due to a large cable capacitance. Capacitive LoadsSome applications require driving large capacitive loads. The EV kit provides C8 and R6 pads for an optional capacitive-load driving circuit. C8 simulates the capacitive load, while R6 acts as an isolation resistor to improve the op amp’s stability at higher capacitive loads. To improve the stability of the amplifier in such cases, replace R6 with a suitable resistor value to improve amplifier phase margin Note:To balance out input bias current effects, use R2 = R1││ R5 (Ω).Table 1. Jumper Descriptions (JU1–JU3) *Default position.#Denotes RoHS compliant.JUMPERSHUNTPOSITIONDESCRIPTION JU1Pin 1Disconnects INM from GND.1-2*Connects INM to GND throughR1 for noninverting configuration.JU2Pin 1*Disconnects INP from GND.1-2Connects INP to GNDthrough R2.JU31-2*Connect SHDN to V DD to placethe device into normal operation.2-3Connect SHDN to GND to placeinto shutdown mode.PART TYPEMAX40108EVKIT#EV Kit Ordering InformationEvaluates: MAX40108 MAX40108 Evaluation KitMAX40108 EV Kit Bill of MaterialsITEM REF_DES DNI/DNP QTY MFG PART #MANUFACTURER VALUE DESCRIPTION1C1, C7—2C0603X7R500103JNP;C0603C103J5RACVENKEL LTD;KEMET0.01µFCAPACITOR; SMT (0603); CERAMIC CHIP; 0.01µF; 50V; TOL = 5%;MODEL = X7R; TG = -55°C TO +125°C; TC=+/2C2, C18—2GRM31CR71H475KA12;GRJ31CR71H475KE11;GXM31CR71H475KA10MURATA;MURATA;MURATA4.7µFCAPACITOR; SMT (1206); CERAMIC CHIP; 4.7µF; 50V; TOL = 10%;MODEL =; TG = -55°C TO +125°C; TC = X7R3GND, TP0_GND,TP4_GND-TP6_GND—55011KEYSTONE N/ATEST POINT; PIN DIA = 0.125IN; TOTAL LENGTH =0.445IN; BOARD HOLE = 0.063IN;BLACK; PHOSPHOR BRONZE WIRE SILVER PLATE FINISH;4JU1, JU2—2PCC02SAAN SULLINS PCC02SAAN CONNECTOR; MALE; THROUGH HOLE; BREAKAWAY; STRAIGHT THROUGH; 2PINS; -65°C TO +125°C5JU3—1PCC03SAAN SULLINS PCC03SAAN CONNECTOR; MALE; THROUGH HOLE; BREAKAWAY; STRAIGHT THROUGH; 3PINS; -65°C TO +125°C6R1—1CRCW06031K00FK;ERJ-3EKF1001VISHAY DALE;PANASONIC1K RESISTOR; 0603; 1K; 1%; 100PPM; 0.10W; THICK FILM7R2, R6, R8, R12—4RC1608J000CS;CR0603-J/-000ELF;RC0603JR-070RLSAMSUNG ELECTRONICS;BOURNS;YAGEO PH0RESISTOR; 0603; 0Ω; 5%; JUMPER; 0.10W; THICK FILM8R5—1CRCW060310K0FK;ERJ-3EKF1002VISHAY DALE;PANASONIC10K RESISTOR; 0603; 10K; 1%; 100PPM; 0.10W; THICK FILM9S1-S3—3S1100-B;SX1100-B;STC02SYANKYCON;KYCON;SULLINS ELECTRONICSCORP.SX1100-BTEST POINT; JUMPER; STR; TOTAL LENGTH = 0.24IN; BLACK; INSULATION = PBT;PHOSPHOR BRONZE CONTACT = GOLD PLATED10TP1—15000KEYSTONE N/A TEST POINT; PIN DIA=0.1IN; TOTAL LENGTH = 0.3IN; BOARD HOLE = 0.04IN; RED; PHOSPHOR BRONZE WIRE SILVER PLATE FINISH;11TP_INAP,TP_INM, TP_OUT—35012KEYSTONE N/ATEST POINT; PIN DIA = 0.125IN; TOTAL LENGTH = 0.445IN; BOARD HOLE = 0.063IN;WHITE; PHOSPHOR BRONZE WIRE SILVER PLATE FINISH;12U1—1MAX40108ANT+MAXIM MAX40108ANT+EVKIT PART - IC; MAX40108ANT+; 1V LOW-POWER PRECISION OPERATIONAL AMPLIFIER; PACKAGE OUTLINE DRAWING: 21-100427; PACKAGE CODE: N60M1+113VDD, VSS—25010KEYSTONE N/A TEST POINT; PIN DIA = 0.125IN; TOTAL LENGTH = 0.445IN; BOARD HOLE = 0.063IN; RED; PHOSPHOR BRONZE WIRE SIL;14PCB—1MAX40108MAXIM PCB PCB:MAX4010815C3, C6, C8DNP0N/A N/A OPEN PACKAGE OUTLINE 0603 NON-POLAR CAPACITOR 16C4, C5, C9DNP0N/A N/A SHORT PACKAGE OUTLINE 0603 NON-POLAR CAPACITOR17INM, INP, OUT DNP0CN-BNC-011PGFIRST TECHELECTRONICS, CO.CN-BNC-011PG CONNECTOR; FEMALE; THROUGH HOLE; BNC JACK; STRAIGHT; 5PINS18R3, R4, R7,R9-R11DNP0N/A N/A OPEN PACKAGE OUTLINE 0603 RESISTOR 29TOTALEvaluates: MAX40108 MAX40108 Evaluation KitMAX40108 EV Kit Schematic DiagramEvaluates: MAX40108MAX40108 Evaluation Kit MAX40108 EV Kit—Top Silkscreen MAX40108 EV Kit—Bottom ViewMAX40108 EV Kit—Bottom SilkscreenMAX40108 EV Kit—Top View MAX40108 EV Kit PCB Layout DiagramsMaxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time.Evaluates: MAX40108MAX40108 Evaluation Kit REVISION NUMBERREVISION DATE DESCRIPTIONPAGES CHANGED6/20Initial release—Revision HistoryFor pricing, delivery, and ordering information, please visit Maxim Integrated’s online storefront at https:///en/storefront/storefront.html.MAX40108EVKIT#。

MAX2010EVKIT中文资料

General DescriptionThe MAX2009/MAX2010 evaluation kits (EV kits) simplify the evaluation of the MAX2009 and MAX2010. These kits are fully assembled and tested at the factory. Standard 50ΩSMA connectors are included for all inputs and out-puts to facilitate evaluation on the test bench.Each EV kit provides a list of equipment required to evaluate the device, a test procedure, a circuit schematic, a bill of materials (BOM), and artwork for each layer of the PC board.Featureso Fully Assembled and Tested o Frequency Range1200MHz to 2500MHz (MAX2009)500MHz to 1100MHz (MAX2010)o Up to 12dB ACPR Improvement*o Independent Adjustable Gain and Phase Expansiono Low Power Consumption*Performance dependent on amplifier, bias, and modulation.Evaluate: MAX2009/MAX2010MAX2009/MAX2010 Evaluation Kits________________________________________________________________Maxim Integrated Products 1MAX2009 Component ListOrdering Information19-2972; Rev 0; 9/03For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .Component Suppliers*EP = Exposed paddle.MAX2010 Component ListE v a l u a t e : M A X 2009/M A X 2010Quick StartThe MAX2009/MAX2010 EV kits are fully assembled and factory tested. Follow the instructions in the Connections and Setup section for proper device evaluation.Test Equipment RequiredThis section lists the recommended test equipment to verify the operation of the MAX2009/MAX2010. I t is intended as a guide only, and substitutions may be possible:•Two DC power supplies capable of delivering +5V and 20mA of continuous current •Four adjustable DC power supplies capable of deliv-ering +5V and 5mA of continuous current •One high-current power supply capable of biasing a preamplifier •One HP 8753D or equivalent network analyzer •One preamplifier with a gain of 25dB in the 500MHz to 1100MHz (MAX2010) or 1200MHz to 2500MHz (MAX2009) frequency range with a minimum output 1dB compression point of 38dBm •One 6dB attenuator•One 3dB high-power attenuator •Two 6dB high-power attenuatorsConnections and SetupTest Set Calibration1)Set up the test equipment per Figure 1 with the net-work analyzer output power disabled.2)Enable the preamplifier.3)Set the network analyzer to perform a power sweepfrom -20dBm to +8dBm at the frequency of interest and enable the output power. For the best results,perform the standard network analyzer calibration with everything except the MAX2009/MAX2010 EV kit.4)After the calibration, leave the preamplifier connect-ed to port 1 of the network analyzer. Testing the Phase Section—Figure 11)With the network analyzer’s power disabled, con-nect the output attenuator pad of the preamplifier to the SMA labeled PHASE_IN (J1).2)Connect the SMA labeled PHASE_OUT (J2) to theattenuator pad on port 2 of the network analyzer.3)With the +5V supply disabled, connect the positiveterminal to the header pin labeled VCC_P. Connect the ground terminal to a header pin labeled GND.4)With all adjustable power supplies disabled, settheir voltages to the recommended values in Table 1. Connect these supplies to PB_I N, PD_CS1,PD_CS2, and PF_S1*. Connect all ground terminals to the header pins labeled GND.5)Enable the +5V (VCC_P) power supply first, fol-lowed by the adjustable supplies.6)Enable the output power on the network analyzer.7)With the recommended settings, the AM-PMresponse of the phase section should provide a phase expansion breakpoint of approximately 4dBm and a slope of approximately 1.2°/dB.8)To power down: First disable the network analyzer,preamplifier, adjustable supplies, and then the +5V (VCC_P) supply.Testing the Gain Section—Figure 21)With the network analyzer’s output power disabled,connect the output attenuator pad of the preamplifi-er to the SMA labeled GAIN_IN (J3).2)Connect the SMA labeled GAI N_OUT (J4) to theattenuator pad on port 2 of the network analyzer.3)With the +5V supply disabled, connect the positiveterminal to the header pin labeled VCC_G. Connect the ground terminal to a header pin labeled GND.4)With all adjustable power supplies disabled, settheir voltages to the recommended values in Table 2. Connect these supplies to G_BP, G_FS, and G_CS. Connect all ground terminals to the header pins labeled GND.5)Enable the +5V (VCC_G) power supply first, fol-lowed by the adjustable supplies.6)Enable the output power on the network analyzer.7)With the recommended settings, the AM-AMresponse of the gain section should provide a gain expansion breakpoint of approximately 5dBm and a slope of approximately 0.5dB/dB.8)To power down: First disable the network analyzer,preamplifier, adjustable supplies, and then the +5V (VCC_G) supply.MAX2009/MAX2010 Evaluation Kits 2_______________________________________________________________________________________Detailed DescriptionThe following sections describe the tuning methodology best implemented with a class A amplifier. Other classes of operation may require significantly different settings.Supply Decoupling CapacitorsCapacitors C4 and C5 are 0.01µF (±10%) and are used for minimizing low-frequency noise on the supply.External Matching ComponentsThe MAX2009 external matching networks at the input and output of the phase and gain sections consist of C1, C11, C10, C12, C9, C8, C6, C7, along with some high-impedance transmission lines. The MAX2010matching consists of C1, C11, L1, L2, C10, C12, C9, C8,C6, and C7.Phase-Tuning SectionVaractors VR1 and VR2 provide fine tuning of the phase-expansion slope. Resistors R1 and R2 provide a high-impedance method to inject control voltage on the varactors. Capacitors C2 and C3 are coupling capaci-tors that also offset the series parasitic inductance of the chip and PC board. If phase-slope fine tuning is not required in the user ’s application, then only C2 and C3to ground are necessary.Gain and Phase ControlsThe MAX2009/MAX2010 controls can provide real-time software-controlled distortion corrections as well as set-and-forget tuning by setting the expansion starting point (breakpoint) and the rate of expansion (slope).The gain and phase breakpoints are adjustable over a 20dB input power range. The phase expansion slope is variable from 0.3°/dB to 2.0°/dB and can be adjusted for a maximum of 24°of phase expansion. The gain expansion slope is variable from 0.1dB/dB to 0.6dB/dB and can be adjusted for a maximum of 7dB gain expansion.Phase-Expansion BreakpointThe PB_I N input voltage range of 0V to V CC corre-sponds to a breakpoint input power range of 3.7dBm to 23dBm. I n order to achieve optimal performance, the phase-expansion breakpoint of the MAX2009/MAX2010 must be set to equal the phase compression point of the PA.Control pin PBRAW should be shorted to the PBEXP output pin for most applications. Driving PBRAW direct-ly allows for additional control such as obtaining phase compression for some and/or all the input power sweep. Resistor R3 allows the option of driving PBRAW with a low-impedance voltage, which overrides the PBEXP output voltage.Phase-Expansion SlopeThe phase-expansion slope of the MAX2009/MAX2010 is controlled by the PF_S1, PF_S2, PD_CS1, and PD_CS2pins. Most applications require PF_S1 and PF_S2 to be driven identically, and therefore they are shorted on layer 4 of the PC board. The phase-expansion slope of the MAX2009/MAX2010 must also be adjusted to equal the opposite slope of the PA ’s phase-compression curve.Gain-Expansion BreakpointThe G_BP input voltage range of 0.5V to 5.0V corresponds to a breakpoint input power range of -3dBm to 23dBm. In order to achieve the optimal performance,the gain-expansion breakpoint of the MAX2009/MAX2010 must be set to equal the gain- compression point of the PA. The G_BP control has a minimal effect on the small-signal gain when operated from 0.5V to 5.0V.Gain-Expansion SlopeBoth G_CS and G_FS pins have an input voltage range of 0V to V CC , corresponding to a slope of approximately 0.1dB/dB to 0.6dB/dB. The slope is set to maximum when V GCS = 0V and V GFS = +5V, and the slope is at its minimum when V GCS = +5V and V GFS = 0V. In addi-tion to properly setting the breakpoint, the gain-expan-sion slope of the MAX2009/MAX2010 must also be adjusted in order to compensate for the PA ’s gain com-pression. The slope should be set using the following equation:MAX20XX_SLOPE =where:MAX20XX_SLOPE = MAX2009/MAX2010 gain section ’s slope in dB/dB.PA_SLOPE = PA ’s gain slope in dB/dB, a negative number for compressive behavior.Unlike with the G_BP pin, modifying the gain-expansion slope bias on the G_CS pin causes a change in the part ’s insertion loss and noise figure. For example, a smaller slope caused by G_CS results in a better inser-tion loss and lower noise figure.Evaluate: MAX2009/MAX2010MAX2009/MAX2010 Evaluation Kits_______________________________________________________________________________________3E v a l u a t e : M A X 2009/M A X 2010Modifying the EV KitThe external varactors on the EV kit can be replaced with fixed capacitors if dynamic tuning of the fine phase-expansion slope through PF_S1 and PF_S2 is not required. A closely matched minimum effective capaci-tance of 2pF to 6pF must be presented at these ponent pads for external filtering components are included for pins PB_I N, PB_RAW, G_BP, G_CS, and G_FS.Pins PF_S1 and PF_S2 are shorted together on the EV kit. I f independent control is required, disconnect the trace connecting these two pins on the bottom side of the PC board (pins 19 and 20 of J5).Layout ConsiderationsThe MAX2009/MAX2010 EV kits can serve as guides to board layout. Pay close attention to thermal design andplacement of components on the PC board. The pack-age ’s exposed paddle (EP) dissipates heat from the device and provides a low-impedance electrical con-nection. The EP must be solder attached to a PC board ground pad. This ground pad should be connected to the lower ground plane using multiple ground vias. The MAX2009/MAX2010 PC boards use a 3 x 3 grid of 0.012in diameter plated through holes. The MAX2009layout uses high-impedance lines on the input and out-put paths of the gain section to aid in matching. In an actual application, matching capacitors C7, C9, C11,and C12 could be replaced with a microstrip equivalent solution to reduce component count. I n order to pro-vide increased tuning range, the ground plane under the varactor control section has been removed. The MAX2009/MAX2010 EV kits are constructed on FR4with the top dielectric thickness of 0.015in.MAX2009/MAX2010 Evaluation Kits 4_______________________________________________________________________________________Evaluate: MAX2009/MAX2010MAX2009/MAX2010 Evaluation Kits_______________________________________________________________________________________5E v a l u a t e : M A X 2009/M A X 2010MAX2009/MAX2010 Evaluation Kits 6_______________________________________________________________________________________Evaluate: MAX2009/MAX2010MAX2009/MAX2010 Evaluation Kits_______________________________________________________________________________________7E v a l u a t e : M A X 2009/M A X 2010MAX2009/MAX2010 Evaluation Kits 8_______________________________________________________________________________________Figure 5. MAX2009 EV Kit PC Board Layout—Top SilkscreenFigure 6. MAX2009 EV Kit PC Board Layout—Top SoldermaskFigure 7. MAX2009 EV Kit PC Board Layout—Top Layer MetalFigure 8. MAX2009 EV Kit PC Board Layout—Inner Layer 2(GND)Evaluate: MAX2009/MAX2010MAX2009/MAX2010 Evaluation Kits_______________________________________________________________________________________9Figure 9. MAX2009 EV Kit PC Board Layout—Inner Layer 3(Routes)Figure 10. MAX2009 EV Kit PC Board Layout—Bottom LayerMetalFigure 11. MAX2009 EV Kit PC Board Layout—BottomSoldermask Figure 12. MAX2009 EV Kit PC Board Layout—BottomSilkscreenE v a l u a t e : M A X 2009/M A X 2010MAX2009/MAX2010 Evaluation Kits 10______________________________________________________________________________________Figure 13. MAX2010 EV Kit PC Board Layout—Top SilkscreenFigure 14. MAX2010 EV Kit PC Board Layout—Top SoldermaskFigure 15. MAX2010 EV Kit PC Board Layout—Top Layer MetalFigure 16. MAX2010 EV Kit PC Board Layout—Inner Layer 2(GND)MAX2009/MAX2010 Evaluation Kits Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses areimplied. Maxim reserves the right to change the circuitry and specifications without notice at any time.Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________11©2003 Maxim Integrated Products Printed USAis a registered trademark of Maxim Integrated Products.Figure 17. MAX2010 EV Kit PC Board Layout—Inner Layer 3(Routes)Figure 18. MAX2010 EV Kit PC Board Layout—Bottom LayerMetalFigure 19. MAX2010 EV Kit PC Board Layout—BottomSoldermask Figure 20. MAX2010 EV Kit PC Board Layout—BottomSilkscreen元器件交易网Evaluate: MAX2009/MAX2010。

MAX20048评估板说明书

MAX20048EVKIT#Evaluates: MAX20048 MAX20048 Evaluation KitGeneral DescriptionThe MAX20048 evaluation kit (EV kit) is a fully assembled and tested application circuit for the MAX20048 current-mode buck-boost controller IC. The EV kit is designed to deliver up to 16A (max) input current with input voltages from 2V to 36V. The output-voltage accuracy is ±2% within the normal 9V to 18V operation input range and a ±3% accuracy in the 2V to 18V range. Voltage quality can be monitored by observing the PGOOD signal.The IC offers 5V fixed output voltage and a 4V to 25V OUT programmable range. Switching frequency is adjustable from 220kHz to 2.2MHz, which allows for small external components, reduced output ripple, and guarantees no AM interference. The IC automatically enters skip mode at light loads with low 55µA quiescent current at no load. The IC comes with a spread-spectrum frequency-modulation option designed to minimize EMI-radiated emissions and a SYNCOUT option that outputs 180° out-of-phase clock. Benefits and Features●2V to 36V Input Supply Range●Delivers Up to 16A Input Current●Enable Input●Frequency Synchronization Input●Voltage-Monitoring PGOOD Output●BIAS Voltage-Monitoring Test Point●Fully Assembled and Tested●Proven PCB LayoutOrdering Information appears at end of data sheet.Quick StartRequired Equipment●MAX20048 EV kit●2V to 36V, 20A power supply capable of providing20A at 2V input●Voltmeter●Electronic loadProcedureThe MAX20048 EV kit is fully assembled and tested. Follow the steps below to verify board operation:1)Verify that all jumpers are in their defaultpositions, as shown in Table 1.2)Connect the positive and negative terminals of thepower supply to IN and GND test pads, respectively.3)Set the power-supply voltage to 14V and 10A currentlimit.4)Connect the positive terminal of the voltmeter to OUTand the negative terminal to GND2.5)Turn on the power supply.6)Verify that OUT is approximately 12V.Additional Evaluation7)Connect the positive terminal of the electronic load toOUT and the negative terminal to GND2.8)Set the electronic load to 2A and turn on the load.9)Verify output voltage on the voltmeter is 12V ±2%.10)With the load still on, slowly reduce the input voltagefrom 14V to 8V. Verify output voltage on the voltmeter is 12V ±2%Table 1. Default Jumper SettingsJUMPER DEFAULT SHUNTPOSITION FUNCTIONS EN ON-Middle Buck-boost enabled PGOOD PU InstalledPGOOD pulls up toVBIAS when OUT isin regulationSYNC FPWM-Middle Forced-PWM modeClick here for production status of specific part numbers.Evaluates: MAX20048 MAX20048 Evaluation KitDetailed Description of HardwareThe MAX20048 EV kit provides a proven layout for the MAX20048 buck-boost controller IC. The IC accepts input voltage as high as 36V and can deliver high-load currents, with a 20A (max) input current in boost mode. The EV kit can handle an input-supply transient up to 40V. Various test points are included for evaluation. The EV kit comes installed with a 3mΩ current-sense resistor on the input (R1) and a 4mΩ sense resistor on the output (R2). This sets the input current limit to 16.67A and the runaway current limit to 18.75A. A higher current limit can be set by changing the sense resistors. An optional filter input (IN_FILTER) is provided to test designs with an additional input filter. The default EV kit comes with no filter installed, so input terminal IN must be used.External SynchronizationThe IC can operate in fixed-PWM (FPWM) mode or skip mode. The EV kit comes with a default jumper setting of FPWM. T o enable skip mode operation, change the jumper to Skip-Middle. The IC can be synchronized to an external clock by connecting the external clock between the middle and ground pins on the SYNC jumper. The IC is forced to operate in FPWM mode when SYNC is connected to a clock source.Output Monitoring (PGOOD)The EV kit provides a power-good output test point (PGOOD) to monitor the status of the buck output (OUT). PGOOD is an open-drain output and is high impedance when the output voltage is in regulation. PGOOD is low impedance when the output voltage drops below 92% (typ) of its nominal regulated voltage. To obtain a logic signal, pull up PGOOD to BIAS by installing a shunt on the PGOOD jumper.Evaluating Other VoltagesThe EV kit comes installed with the MAX20048ATGCA/ VY+ and is configured for 12V OUT at a 420kHz switching frequency set for 16A (max) input current in boost mode. For evaluating other configurations, refer to the Design Example table in the MAX20048 IC data sheet. Other IC options for spread spectrum/SYNCOUT can be installed as well.EMC PerformanceEV kit provides a proven layout that is compliant with CISPR-25 requirements for EMC testing. The default EV kit (12V OUT, 420kHz configuration, without spread spectrum) requires no additional filtering to meet the CISPR-25 EMC standards. The IC also comes with the spread-spectrum option, which can be ordered to improve EMC performance.Specifications Summary●V IN (min): 2V●V IN (max): 36V●V OUT: 12V●f SW: 420kHz●I OUT (max): 5A●Input Current: 16.67A peak current●Runaway Current: 18.75A peak current●SPS: Off●FSYNC: Jumper set to PWM (default)#Denotes RoHS-compliant.PART TYPEMAX20048EVKIT#12V Output/420kHz EV kit Ordering InformationEvaluates: MAX20048MAX20048 Evaluation Kit REF DES QTY MFG PART #MANUFACTURERDESCRIPTIONC1, C2, C33CGA6P3X7S1H106M TDK CAP CER 10UF 50V X7S 1210C41EEH-ZE1H680PPanasonic CAP ALUM POLY 68UF 20% 50V SMDC5, C6, C173CGA2B3X7R1H104M050BB TDK CAP CER 0.1UF 50V X7R 0402C71CGA4J1X7R1V475K125AE TDK CAP CER 4.7UF 35V X7R 0805C81CGA2B2X7R1E103K050BA TDK CAP CER 10000PF 25V X7R 0402C91C0402C101K4RACAUTOKEMET CAP CER SMD 0402 100PF 10% X7R 1L20----Do Not InstallC10, C11, C153CAA572X7R1V107M TDK CAP CER 100uF, 35V, 2220, X7R C12, C13, C143CGA3E3X7R1H474K080AE TDK CAP CER 0.47UF 50V X7R 0603C161CGA4J1X7R1V225M125ACTDK CAP CER 2.2UF 35V X7R 0805C18, C192----Do Not InstallD11BAT54AWFILMY ST MicroelectronicsDIODE ARRAY SCHOTTKY 40V SOT323L11XAL1060-222E Coilcraft Inductor, 2.2uHR11PMR18EZPFV3L00ROHM RES 0.003 OHM 1% 1W 1206R21PMR18EZPFV4L00ROHM RES 0.004 OHM 1% 1W 1206R31ERJ-2GEJ473X Panasonic RES SMD 47K OHM 5% 1/10W 0402R51ERA-2AEB7322X Panasonic RES SMD 73.2K OHM 5% 1/10W 0402R6, R102ERA-2AED103X Panasonic RES SMD 10K OHM 0.5% 1/16W 0402R11, R14, R15, R164ERJ-2GEJ2R0X Panasonic RES SMD 2 OHM 5% 1/10W 0402R7, R12, R133RC0402JR-070RL Yageo RES SMD 0 OHM JUMPER 1/16W 0402R81ERJ-2GEJ200X Panasonic RES SMD 20 OHM 5% 1/10W 0402R91ERA-2AEB8662X Panasonic RES SMD 86.6KOHM 0.1% 1/16W 0402R171RC0603JR-0710KLYageo RES SMD 10K OHM 5% 1/10W 0603R41----Do Not Install R18, R19, R20, R214----Do Not InstallU11MAX20048ATGA/VY+Maxim Integrated Automotive 40V, 55uA Iq, 2.2MHz, H-BridgeBuck-Boost ControllerQ1, Q2, Q3, Q44NVMFS5C460NLON Semiconductor MOSFET N-CH 40V 21A 78A 5DFN IN_FILTER, IN, OUT, GND,GND2, GND365020Keystone Electronics TEST POINT PC LOW PRO W/OUT BASE FBR, PGOOD, VCC 35012Keystone ElectronicsTEST POINT PC MULTI PURPOSE WHT ENABLE, SYNC2PEC03SAAN Sullins CONN HEADER .100 SINGL STR 3POS J41PEC02SAANSullinsCONN HEADER .100 SINGL STR 2POSMAX20048 EVKIT BOMMAX20048 EV Kit Bill of MaterialsEvaluates: MAX20048 MAX20048 Evaluation KitMAX20048 EV Kit SchematicMAX20048 EV Kit Component Placement Guide―TopEvaluates: MAX20048 MAX20048 Evaluation KitREVISION NUMBER REVISIONDATE DESCRIPTIONPAGESCHANGED07/18Initial release—Revision HistoryFor pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at .MAX20048EVKIT#。

MAX1879EVKIT中文资料

General DescriptionThe MAX1879, in conjunction with a P-channel MOSFET and a current-limited wall-mount adapter with an output voltage between +4.7V to +20V, allows safe and quick charging of a single lithium-ion (Li+) cell.The MAX1879 evaluation kit (EV kit) is a complete, fully assembled and tested Li+ battery charger. Jumpers on the EV kit allow easy adjustment to a +4.1V or +4.2V battery regulation voltage. A light-emitting diode (LED)indicates the cell’s charging status.Featureso Simple Stand-Alone Li+ Charger o Low Power Dissipationo Safely Precharges Over-Discharged Cellso Top-Off Charging to Achieve Full Battery Capacity o 8-Pin µMAX ®Package o Surface-Mount Construction o Fully Assembled and TestedEvaluates: MAX1879MAX1879 Evaluation Kit________________________________________________________________Maxim Integrated Products 119-2177; Rev 1; 9/05Component ListOrdering InformationFor pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .µMAX is a registered trademark of Maxim Integrated Products, Inc.E v a l u a t e s : M A X 1879MAX1879 Evaluation Kit 2_______________________________________________________________________________________Quick StartThe MAX1879 EV kit is a fully assembled and tested sur-face-mount board. Follow the steps below to verify board operation. Do not plug the WALL CUBE in until indicated.1)Install a shunt across pins 1 and 2 of jumper JU1 (TSEL)for a minimum 34ms on-time top-off pulse width.2)Install a shunt across jumper J U2 (THERM) to dis-able the temperature-monitoring function.3)Verify that a shunt is not across jumper JU3 (ADJ) ifcharging a +4.2V Li+ battery. Install a shunt across jumper JU3 if charging a +4.1V Li+ battery. 4)Connect a 6V current-limiting (≤1A) power supplyacross the EV kit ’s WALL CUBE and GND terminals.5)Place a voltmeter across the EV kit ’s BATT+ andBATT- terminals.6)Observe correct Li+ cell polarity.Connect a sin-gle-cell Li+ battery across the EV kit ’s BATT+ and BATT- terminals. The LED turns on if the battery voltage is below the predetermined voltage (4.1V or 4.2V) and greater than +2.5V. See Table 4 for addi-tional LED status descriptions.7)The LED turns off once the Li+ cell has beencharged to the predetermined voltage.Detailed DescriptionThe MAX1879 EV kit is a fully assembled and tested single Li+ battery charger. The EV kit contains an exter-nal p-channel MOSFET for current switching and can deliver up to 1A of current to an Li+ battery.The EV kit contains a jumper that sets the battery (BATT)regulation voltage to +4.1V or +4.2V. An external resis-tor can also adjust the regulation voltage from +4.0V to +4.2V. An LED indicates the charging status of the bat-tery. The maximum charging time is 6.25 hours.The MAX1879 employs thermistor feedback to prequalify the Li+ cell ’s temperature for fast charging. The EV kit con-tains a jumper that allows the user to bypass this feature or to connect an external thermistor to the EV kit board.Input SourceThe input source for the MAX1879 EV kit must be a current-limited supply capable of continuous short-circuit operation. The supply should have a current limit of ≤1A and an output voltage between +4.7V and +20V.Connect a current-limited wall cube to power jack J 1(center pin is the positive terminal); otherwise, connect a current-limited power-supply across the WALL CUBE and GND PC pads. Current-limited power sources with higher charge currents can be used, but diode D1 and MOSFET P1 must be rated accordingly.Jumper SelectionThe MAX1879 EV kit features jumpers (J U1, J U2, and JU3) to configure the circuit for optimal charging perfor-mance and evaluation.Jumper JU1 sets the minimum on-time pulse width. See Table 1 for the J U1 shunt configuration to select the appropriate top-off pulse width. Refer to the Selecting Minimum On-Time section in the MAX1879 data sheet for information on selecting the minimum on-time pulse width in top-off mode.(THERM) to a 10k Ωresistor, thus disabling temperature qualification. To enable temperature qualification,remove the shunt from J U2 and connect a thermistor between the THERM and GND pads. The thermistor should be 10k Ωat +25°C and have a negative temper-ature coefficient. See Table 2 for the JU2 configuration.Refer to the Thermistor section in the MAX1879 data sheet for other thermistor details.Jumper JU3 sets the battery regulation voltage. The EV kit comes with two voltage options, 4.2V (J U3 open)and 4.1V (J U3 closed). For other voltages (+4.0V to +4.2V), replace resistor R1. Refer to the Adjusting the Battery Regulation Voltage section in the MAX1879data sheet to select resistor R1. See Table 3 for the JU3configuration.The LED on the EV kit is driven by the CHG pin.Depending on the Li+ cell ’s charging status, the pin is low or high impedance, thus turning the LED on or off. If a thermistor is installed, and the cell temperature is unacceptable for fast charging, or the charger is in the precharging state, the LED blinks at 2Hz. The EV kit stops charging the cell during a temperature fault. See Table 4 for LED and CHG states.For driving logic circuits, remove the LED and install a 100k Ωpullup resistor from CHG to the logic supply of the CHG monitoring circuit. A logic-low signal appears at CHG when the charger is in fast-charge; otherwise, a logic high signal is detected. During the precharging or temperature fault state, the output logic signal alter-nates between low and high at a fixed frequency of 2Hz. See Table 4.Evaluates: MAX1879MAX1879 Evaluation Kit_______________________________________________________________________________________3E v a l u a t e s : M A X 1879MAX1879 Evaluation Kit 4_______________________________________________________________________________________Figure 1. MAX1879 EV Kit SchematicEvaluates: MAX1879MAX1879 Evaluation KitMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________5©2005 Maxim Integrated ProductsPrinted USAis a registered trademark of Maxim Integrated Products, Inc.Figure 2. MAX1879 EV Kit Component Placement Guide—Component SideFigure 3. MAX1879 EV Kit PC Board Layout—Component SideFigure 4. MAX1879 EV Kit PC Board Layout—Solder Side。

MAX4464EXK-T中文资料

General DescriptionThe MAX4464/MAX4470/MAX4471/MAX4472/MAX4474family of micropower op amps operate from a single +1.8V to +5.5V supply and draw only 750nA of supply current. The MAX4470 family feature ground-sensing inputs and Rail-to-Rail ®output. The ultra-low supply current, low-operating voltage, and rail-to-rail output capabilities make these operational amplifiers ideal for use in single lithium ion (Li+), or two-cell NiCd or alka-line battery systems.The rail-to-rail output stage of the MAX4464/MAX4470/ MAX4471/MAX4472/MAX4474 amplifiers is capable of driving the output voltage to within 4mV of the rail with a 100k Ωload, and can sink and source 11mA with a +5V supply. These amplifiers are available in both fully com-pensated and decompensated versions. The single MAX4470, dual MAX4471, and the quad MAX4472 are unity-gain stable. The single MAX4464 and the dual MAX4474 are stable for closed-loop gain configurations of ≥+5V/V. These amplifiers are available in space-sav-ing SC70, SOT23, µMAX, and TSSOP packages.ApplicationsFeatureso Ultra-Low 750nA Supply Current Per Amplifier o Ultra-Low +1.8V Supply Voltage Operation o Ground-Sensing Input Common-Mode Range o Outputs Swing Rail-to-Railo Outputs Source and Sink 11mA of Load Current o No Phase Reversal for Overdriven Inputs o High 120dB Open-Loop Voltage Gain o Low 500µV Input Offset Voltage o 9kHz Gain-Bandwidth Product (MAX4470/MAX4471/MAX4472)o 40kHz Gain-Bandwidth Product (MAX4464/MAX4474)o 250pF (min) Capacitive Load Capability o Available in Tiny 5-Pin SC70 and 8-Pin SOT23PackagesMAX4464/MAX4470/MAX4471/MAX4472/MAX4474Single/Dual/Quad, +1.8V/750nA, SC70,Rail-to-Rail Op Amps________________________________________________________________Maxim Integrated Products 1Pin Configurations19-2021; Rev 2; 2/03For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .Ordering InformationRail-to-Rail is a registered trademark of Nippon Motorola, Ltd.Selector GuideBattery-Powered SystemsPortable Instrumentation Pagers and Cellphones Micropower ThermostatsElectrometer Amplifiers Solar-Powered Systems Remote Sensor Active Badges pH MetersM A X 4464/M A X 4470/M A X 4471/M A X 4472/M A X 4474Single/Dual/Quad, +1.8V/750nA, SC70, Rail-to-Rail Op Amps 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICSStresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.V DD to V SS ...............................................................-0.3V to +6V IN_+ or IN_-......................................(V SS - 0.3V) to (V DD + 0.3V)OUT_ Shorted to V SS or V DD ......................................Continuous Continuous Power Dissipation (T A = +70°C)5-Pin SC70 (derate 3.1mW/°C above +70°C)...................247mW 5-Pin SOT23 (derate 7.1mW/°C above +70°C).................571mW 8-Pin SOT23 (derate 8.9mW/°C above +70°C).................714mW 8-Pin µMAX (derate 4.5mW/°C above +70°C)..................362mW8-Pin SO (derate 5.88mW/°C above +70°C)....................471mW 14-Pin TSSOP (derate 9.1mW/°C above +70°C)...........727mW 14-Pin SO (derate 8.33mW/°C above +70°C)...............667mW Operating Temperature Range .........................-40°C to +85°C Junction Temperature .....................................................+150°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10s) ................................+300°CMAX4464/MAX4470/MAX4471/MAX4472/MAX4474Single/Dual/Quad, +1.8V/750nA, SC70,Rail-to-Rail Op Amps_______________________________________________________________________________________3ELECTRICAL CHARACTERISTICS (continued)ELECTRICAL CHARACTERISTICSM A X 4464/M A X 4470/M A X 4471/M A X 4472/M A X 4474Single/Dual/Quad, +1.8V/750nA, SC70, Rail-to-Rail Op Amps 4_______________________________________________________________________________________Typical Operating Characteristics(V DD = +5V, V SS = 0, V CM = 0, R L = 100k Ωto V DD /2, T A = +25°C, unless otherwise noted.)0.20.10.50.40.30.70.80.60.91.5 3.0 3.52.0 2.5 4.0 4.5 5.0 5.5 6.0SUPPLY CURRENT PER AMPLIFIER vs.SUPPLY VOLTAGEM A X 4470–74 t o c 01SUPPLY VOLTAGE (V)S U P P L Y C U R R E N T (µA )0.20.10.50.40.30.70.80.60.9-500-25255075100SUPPLY CURRENT PER AMPLIFIER vs.TEMPERATUREM A X 4470–74 t o c 02TEMPERATURE (°C)S U P P L Y C U R R E N T (µA )00.100.050.300.200.250.150.400.450.350.50-50-25255075100OFFSET VOLTAGE vs.TEMPERATUREM A X 4470–74 t o c 03TEMPERATURE (°C)O F F S E T V O L T A G E (m V )00.100.050.200.150.300.250.350.450.400.501.01.50.52.02.53.03.54.0OFFSET VOLTAGEvs. COMMON-MODE VOLTAGEM A X 4470-74 t o c 04COMMON-MODE VOLTAGE (V)O F F S E T V O L T A G E (m V )-400-350-150-250-200-300-50-1000-50-25255075100INPUT BIAS CURRENT vs.TEMPERATUREM A X 4470–74 t o c 05TEMPERATURE (°C)I N P U T B I A S C U R R E N T (p A )-90-70-80-40-50-60-20-10-3000 1.51.00.5 2.0 2.5 3.0 3.5 4.0INPUT BIAS CURRENT MON-MODE VOLTAGEM A X 4470–74 t o c 06COMMON-MODE VOLTAGE (V)I N P U T B I A S C U R R E N T (p A )0-1001010010k1kPOWER-SUPPLY REJECTION RATIO vs.FREQUENCY-80-90M A X 4470–74 t o c 07FREQUENCY (Hz)P S R R (d B )-60-70-40-30-50-20-1000.21.00.60.80.41.41.21.6-50-25255075100OUTPUT VOLTAGE SWING LOW vs.TEMPERATURETEMPERATURE (°C)V O L - V S S (m V )142356-500-25255075100OUTPUT VOLTAGE SWING HIGH vs.TEMPERATURETEMPERATURE (°C)V D D - V O H (m V )MAX4464/MAX4470/MAX4471/MAX4472/MAX4474Single/Dual/Quad, +1.8V/750nA, SC70,Rail-to-Rail Op Amps_______________________________________________________________________________________5-120-100-110-60-80-70-90-40-30-50-20-50-25255075100COMMON-MODE REJECTION RATIO vs.TEMPERATURETEMPERATURE (°C)C M R R (d B )00.40.20.80.61.21.01.4-5025-255075100MINIMUM SUPPLY VOLTAGEvs. TEMPERATUREM A X 4470-74 t o c 11TEMPERATURE (°C)M I N I M UM S U P P L Y V O L T A G E (V )607080901001101201301402.53.0 3.54.0 4.55.0A VOL vs. OUTPUT VOLTAGE SWINGOUTPUT VOLTAGE (Vp-p)A V O L (dB )11001k 10k10100kMAX4470/MAX4471/MAX4472GAIN AND PHASE vs. FREQUENCYFREQUENCY (Hz)G A I N (d B )P H A S E (d e g )80706050403020-60100-10-20-30-40-509045-1350-45-9011001k10k10100kMAX4470/MAX4471/MAX4472GAIN AND PHASE vs. FREQUENCYFREQUENCY (Hz)G A I N (d B )P H A S E (d e g )80706050403020-60100-10-20-30-40-501801359045-1350-45-90-40-140101001k 10k100kCROSSTALK vs. FREQUENCY-100-120FREQUENCY (Hz)C R O S S T A L K (d B )-80-6010.000.011010010k1kMAX4470/MAX4471/MAX4472TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCYM A X 4470–74 t o c 16FREQUENCY (Hz)T H D + N (%)0.101.0010k 10101k 100100k10kVOLTAGE NOISE DENSITY vs.FREQUENCYM A X 4470–74 t o c 17FREQUENCY (Hz)1001k N O I S E (n V /√H z )100k10010k100k 1MMAX4470/MAX4471/MAX4472 STABILITY vs. CAPACITIVE AND RESISTIVE LOADSRESISTIVE LOAD (Ω)1k10kC A P A C I T I V E L O AD (p F )Typical Operating Characteristics (continued)(V DD = +5V, V SS = 0, V CM = 0, R L = 100k Ωto V DD /2, T A = +25°C, unless otherwise noted.)500µs/divMAX4470/MAX4471/MAX4472SMALL-SIGNAL STEP RESPONSEINPUT 50mV/divOUTPUT 50mV/divV DD = +5V A V = +1V/V R L = 1M Ω C L = 250pF500µs/div MAX4470/MAX4471/MAX4472SMALL-SIGNAL STEP RESPONSEINPUT 50mV/divOUTPUT 50mV/div V DD = +5V A V = +1V/V R L = 1M Ω C L = 1000pF500µs/div MAX4470/MAX4471/MAX4472LARGE-SIGNAL STEP RESPONSEV DD = +5V A V = +1V/V R L = 1M ΩC L = 12pFINPUT 500mV/divOUTPUT 500mV/div500µs/divMAX4470/MAX4471/MAX4472LARGE-SIGNAL STEP RESPONSEINPUT 500mV/divOUTPUT 500mV/divV DD = +5V A V = +1V/V R L = 1M Ω C L = 1000pF052010152530010050150200250300MAX4470/MAX4471/MAX4472PERCENT OVERSHOOT vs. CAPACITIVE LOADC LOAD (pF)P E R C E N T O V E R S H O O T (%)3-71001k 10kMAX4470/MAX4471/MAX4472SMALL-SIGNAL GAIN vs. FREQUENCY-5-6FREQUENCY (Hz)G A I N (d B )-3-4-10-2123-71001k 100k10k MAX4470/MAX4471/MAX4472SMALL-SIGNAL GAIN vs. FREQUENCY-5-6FREQUENCY (Hz)G A I N (d B )-3-4-10-212M A X 4464/M A X 4470/M A X 4471/M A X 4472/M A X 4474Single/Dual/Quad, +1.8V/750nA, SC70, Rail-to-Rail Op Amps 6_______________________________________________________________________________________0128416202428323640021345I OUT vs. V OUTV OUT (V)I O U T (m A )500µs/div MAX4470/MAX4471/MAX4472SMALL-SIGNAL STEP RESPONSE V DD = +5V A V = +1V/V R L = 1M ΩC L = 12pFINPUT 500mV/divOUTPUT 500mV/div Typical Operating Characteristics (continued)(V DD = +5V, V SS = 0, V CM = 0, R L = 100k Ωto V DD /2, T A = +25°C, unless otherwise noted.)MAX4464/MAX4470/MAX4471/MAX4472/MAX4474Single/Dual/Quad, +1.8V/750nA, SC70,Rail-to-Rail Op Amps_______________________________________________________________________________________7Typical Operating Characteristics (continued)(V DD = +5V, V SS = 0, V CM = 0, R L = 100k Ωto V DD /2, T A = +25°C, unless otherwise noted.)3-71001k 10k 100k MAX4470/MAX4471/MAX4472SMALL-SIGNAL GAIN vs. FREQUENCY-5FREQUENCY (Hz)G A I N (d B )-3-112-6-4-203-71001k 10k MAX4470/MAX4471/MAX4472LARGE-SIGNAL GAIN vs. FREQUENCY-5-6FREQUENCY (Hz)G A I N (d B )-3-4-10-2123-71001k 10kMAX4470/MAX4471/MAX4472LARGE-SIGNAL GAIN vs. FREQUENCY-5-6FREQUENCY (Hz)G A I N (d B )-3-4-10-2123-71001k 10kMAX4470/MAX4471/MAX4472LARGE-SIGNAL GAIN vs. FREQUENCY-5-6FREQUENCY (Hz)G A I N (d B )-3-4-10-21280-6011k 10k100k10FREQUENCY (Hz)G A I N (d B )10100MAX4464/MAX4474GAIN AND PHASE vs. FREQUENCY7060504030200-10-20-30-40-5018013590450-45-90-135P H A S E (d e g r e e s )80-6011k 10k100k10FREQUENCY (Hz)G A I N (d B )10100MAX4464/MAX4474GAIN AND PHASE vs. FREQUENCY7060504030200-10-20-30-40-5018013590450-45-90-135P H A S E (d e g r e e s )0.0011010k1k100MAX4464/MAX4474TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY100.0110.1M A X 4464 t o c 34FREQUENCY (Hz)T H D + N (%)100,00010010k100k 1MMAX4464/MAX4474STABILITY vs. CAPACITIVE AND RESISTIVE LOADSRESISTIVE LOAD (Ω)C A P A C I T I V E L O AD (p F )100010,000OUTPUT 50mV/divINPUT 10mV/divMAX4464/MAX4474SMALL-SIGNAL STEP RESPONSE500µs/divV DD = +5V A V = +5V/V R L = 1M ΩC L = 8pFM A X 4464/M A X 4470/M A X 4471/M A X 4472/M A X 4474Single/Dual/Quad, +1.8V/750nA, SC70, Rail-to-Rail Op Amps 8_______________________________________________________________________________________OUTPUT 50mV/div INPUT 10mV/divMAX4464/MAX4474SMALL-SIGNAL STEP RESPONSEM A X 4464 t o c 37500µs/div V DD = +5V A V = +5V/V R L = 1M ΩC L = 250pFOUTPUT 50mV/div INPUT 10mV/divMAX4464/MAX4474SMALL-SIGNAL STEP RESPONSEM A X 4464 t o c 38500µs/div V DD = +5V A V = +5V/V R L = 1M ΩC L = 1000pFOUTPUT 500mV/divINPUT 100mV/divMAX4464/MAX4474LARGE-SIGNAL STEP RESPONSE500µs/divV DD = +5V A V = +5V/V R L = 1M ΩC L = 8pFOUTPUT 500mV/divINPUT 100mV/divMAX4464/MAX4474LARGE-SIGNAL STEP RESPONSE500µs/divV DD = +5V A V = +5V/V R L = 1M ΩC L = 1000pF10520152530010015050200250300MAX4464/MAX4474PERCENT OVERSHOOT vs. CAPACITIVE LOADC LOAD (pF)P E R C E N T O V E R S H O O T (%)2-7100100k10k 1k MAX4464/MAX4474SMALL-SIGNAL NORMALIZED GAINvs. FREQUENCY-4-60-23-3-51-1FREQUENCY (Hz)G A I N (d B )2-7100100k10k1kMAX4464/MAX4474SMALL-SIGNAL NORMALIZED GAINvs. FREQUENCY-4-60-23-3-51-1FREQUENCY (Hz)G A I N (d B )Typical Operating Characteristics (continued)(V DD = +5V, V SS = 0, V CM = 0, R L = 100k Ωto V DD /2, T A = +25°C, unless otherwise noted.)MAX4464/MAX4470/MAX4471/MAX4472/MAX4474Single/Dual/Quad, +1.8V/750nA, SC70,Rail-to-Rail Op Amps2-7100100k 10k 1k MAX4464/MAX4474LARGE-SIGNAL NORMALIZED GAINvs. FREQUENCY-4-60-23-3-51-1FREQUENCY (Hz)G A I N (d B )2-7100100k10k 1k MAX4464/MAX4474LARGE-SIGNAL NORMALIZED GAINvs. FREQUENCY-4-60-23-3-51-1FREQUENCY (Hz)G A I N (d B )2-7100100k 10k 1k MAX4464/MAX4474SMALL-SIGNAL NORMALIZED GAINvs. FREQUENCY-4-60-23-3-51-1FREQUENCY (Hz)G A I N (d B )2-7100100k10k 1k MAX4464/MAX4474LARGE-SIGNAL NORMALIZED GAINvs. FREQUENCY-4-60-23-3-51-1FREQUENCY (Hz)G A I N (d B )Typical Operating Characteristics (continued)(V DD = +5V, V SS = 0, V CM = 0, R L = 100k Ωto V DD /2, T A = +25°C, unless otherwise noted.)M A X 4464/M A X 4470/M A X 4471/M A X 4472/M A X 4474Single/Dual/Quad, +1.8V/750nA, SC70, Rail-to-Rail Op Amps 10______________________________________________________________________________________Figure 2. Compensation for Feedback Node CapacitanceApplications InformationGround SensingThe common-mode input range of the MAX4470 family extends down to ground, and offers excellent common-mode rejection. These devices are guaranteed not to undergo phase reversal when the input is overdriven.Power Supplies and LayoutThe MAX4470 family operates from a single +1.8V to +5.5V power supply. Bypass power supplies with a 0.1µF ceramic capacitor placed close to the V DD pin. Ground layout improves performance by decreasing the amount of stray capacitance and noise at the op amp ’s inputs and outputs. To decrease stray capacitance, mini-mize PC board lengths and resistor leads, and place external components close to the op amps ’ pins.BandwidthThe MAX4470/MAX4471/MAX4472 are internally compensated for unity-gain stability and have a typical gain-bandwidth of 9kHz. The MAX4464/MAX4474 have a 40kHz typical gain-bandwidth and are stable for a gain of +5V/V or greater.StabilityThe MAX4464/MAX4470/MAX4471/MAX4472/MAX4474maintain stability in their minimum gain configuration while driving capacitive loads. Although this product family is primarily designed for low-frequency applica-tions, good layout is extremely important because low-power requirements demand high-impedance circuits.The layout should also minimize stray capacitance at the amplifier inputs. However some stray capacitance may be unavoidable, and it may be necessary to add a 2pF to 10pF capacitor across the feedback resistor as shown in Figure 2. Select the smallest capacitor value that ensures stability.Chip InformationMAX4470/MAX4464 TRANSISTOR COUNT: 147MAX4471/MAX4474 TRANSISTOR COUNT: 293MAX4472 TRANSISTOR COUNT: 585PROCESS: BiCMOSMAX4464/MAX4470/MAX4471/MAX4472/MAX4474Rail-to-Rail Op Amps______________________________________________________________________________________11M A X 4464/M A X 4470/M A X 4471/M A X 4472/M A X 4474Rail-to-Rail Op AmpsS C 70, 5L .E P SPackage Information(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .MAX4464/MAX4470/MAX4471/MAX4472/MAX4474Rail-to-Rail Op AmpsPackage Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .M A X 4464/M A X 4470/M A X 4471/M A X 4472/M A X 4474Rail-to-Rail Op Amps Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses areimplied. Maxim reserves the right to change the circuitry and specifications without notice at any time.14____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600©2003 Maxim Integrated ProductsPrinted USAis a registered trademark of Maxim Integrated Products.S O I C N .E P SPackage Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .。

MAX7324EVKIT 用户手册说明书

General DescriptionThe MAX7324 evaluation kit (EV kit) is a fully assembled and tested printed-circuit board (PCB) that demon-strates the capabilities of the MAX7324 I 2C port expander with eight push-pull outputs and eight inputs.The MAX7324 EV kit also includes Windows ®2000/XP/Vista-compatible software that provides a simple graphical user interface (GUI) for exercising the MAX7324’s features.The MAX7324 evaluation system (EV system) includes a MAX7324 EV kit and a Maxim CMAXQUSB serial-interface board. The CMAXQUSB board connects to a PC’s USB port and allows the transfer of I 2C commands to the MAX7324 EV kit.The EV kit comes with the MAX7324AEG+ installed.Features♦400kHz, 2-Wire Serial Interface ♦1.71V to 5.5V Operation ♦8 Push-Pull Output Ports♦8 Input Ports with Maskable Latching-Transition Detection ♦Input Ports are Overvoltage Protected to 6V ♦Proven PCB Layout♦Windows 2000/XP/Vista (32-Bit)-Compatible Software ♦Fully Assembled and Tested ♦EV System: USB PC ConnectionEvaluate: MAX7324MAX7324 Evaluation Kit/Evaluation System________________________________________________________________Maxim Integrated Products119-1037; Rev 0; 11/07Component ListFor pricing, delivery, and ordering information,please contact Maxim Direct 1-888-629-4642,or visit Maxim’s website at .Ordering Information+Denotes lead-free and RoHS-compliant.Note: The MAX7324 EV kit software is designed for use withthe complete EV system (MAX7324EVCMAXQU+). The EV system includes both the Maxim CMAXQUSB board and the EV kit (MAX7324EVKIT+). If the Windows software will not be used, the EV kit board can be purchased without the Maxim CMAXQUSB board.Windows is a registered trademark of Microsoft Corp.MAX7324 EV SystemE v a l u a t e : M A X 7324Quick StartRecommended EquipmentBefore beginning, the following equipment is needed:•The MAX7324 EV systemMAX7324 EV kitMaxim CMAXQUSB boardUSB cable (included with CMAXQUSB)•A user-supplied Windows 2000/XP/Vista-compatible PC with a spare USB portNote: In the following sections, software-related items are identified by bolding. Text in bold refers to items directly from the EV kit software. Text in bold and underlined refers to items from the Windows operating system.Procedure1)Visit /evkitsoftware to downloadthe latest version of the EV kit software,7324Rxx.ZIP. Save the EV kit software to a tempo-rary folder and uncompress the ZIP file.2)Install the MAX7324 evaluation software on yourcomputer by running the INSTALL.EXE program inside the temporary folder. The program files are copied and icons are created in the Windows Start | Programs menu.3)Enable the I 2C pullup resistors on the CMAXQUSBboard by setting the DIP switches on SW1 to the ON position.4)For the MAX7324 EV kit, make sure the shunts of alljumpers are in the following default positions:JU1: (1-3)Combined with JU2 makes I 2C address = 0xC0, 0xA0JU2: (1-4)Combined with JU1 makes I 2C address = 0xC0, 0xA0JU3: (Open)Normal operation JU4: (2-3)CMAXQUSB provides the power supply5)Connect the boards by aligning the MAX7324 EVkit’s 20-pin connector with the 20-pin connector of the CMAXQUSB board.6)Connect the USB cable from the PC to the CMAXQUSBboard. A Building Driver Database window pops up in addition to a New Hardware Found message if this is the first time it is used on this PC. If you do not see a window that is similar to the one described above after 30s, remove the USB cable from the CMAXQUSB and reconnect it.Administrator privileges are required to install the USB device driver on Windows 2000/XP/Vista.7)Follow the directions of the Add New HardwareWizard to install the USB device driver. Choose the Search for the best driver for your device option.Specify the location of the device driver to be C:\Program Files\MAX7324(default installation directory) using the Browse button. During device driver installation, Windows may show a warning message indicating that the device driver Maxim uses does not contain a digital signature. This is not an error condition and it is safe to proceed with installation. Refer to the USB_Driver_Help.PDF doc-ument for additional information.8)Start the MAX7324 EV kit software by opening itsicon in the Start menu. The GUI main window will appear, as shown in Figure 1.9)Check or uncheck the O8and O9checkboxes abovethe Write button, which is inside the Output Ports group box. Press the Write button and observe the light change of the LEDs on the EV kit board.MAX7324 Evaluation Kit/Evaluation System 2_______________________________________________________________________________________Component Supplierscontacting this component supplier.Detailed Description of SoftwareTo start the MAX7324 EV kit software, double click the MAX7324 EV kit icon that is created during installation.The GUI main window appears, as shown in Figure 1.There are four group boxes on the MAX7324 EV kit GUI software: Input Ports , Output Ports , I2C Addresses ,and Interrupt Status .Input Ports Group BoxThe Input Ports group box shown in Figure 1 contains the Write group box and the Read group box. The Read group box consists of two sections: Port Status and Flag Status .Check or uncheck the desired checkboxes in the Write group box and press the Write button to write the port settings to the device.Pressing the Single-byte Read button only reads the port status. Pressing the Two-byte Read button will read both port status and flag status. Refer to the MAX7324 IC data sheet for a detailed description.Output Ports Group BoxThe Output Ports group box also contains the Write group box and the Read group box.Check or uncheck the desired checkboxes in the Write group box and press the Write button to write the port settings to the device.Press the Read button to read the port status.Evaluate: MAX7324MAX7324 Evaluation Kit/Evaluation System_______________________________________________________________________________________3Figure 1. MAX7324 Evaluation Software Main WindowE v a l u a t e : M A X 7324I2C Addresses Group BoxThe I2C Addresses drop-down list automatically detects the MAX7324’s I 2C slave address when the GUI software starts. If multiple devices are connected to the I 2C bus, the user can use this drop-down list to manually change the device’s I 2C slave address according to the shunt position of JU1 and JU2, as shown in Table 1.Interrupt Status Group BoxThe Interrupt Status group box shows the current sta-tus of the MAX7324 INT pin (active-low, programmable latching transition-detection interrupt output).MAX7324 Evaluation Kit/Evaluation System 4_______________________________________________________________________________________Detailed Description of HardwareThe MAX7324 has eight push-pull outputs and eight inputs. The MAX7324 EV kit board provides a proven layout for evaluating the MAX7324. The EV kit comes with a MAX7324AEG+ installed.Hardware-Reset ControlThe hardware-reset function is controlled by jumper JU3, as shown in Table 2. Putting a shunt in the 1-2position resets all registers and puts the device in the power-on-reset state.I 2C Address ConfigurationThe combination of shunt positions of jumpers JU1 and JU2 determine the I 2C slave address of the MAX7324EV kit. See Table 1 to select the appropriate setting.Power SuppliesThe MAX7324 EV kit can either be powered from the CMAXQUSB (2.5V, 3.3V, and 5V) or from a user-supplied 1.71V to 5.5V power supply connecting to VDD, as shown in Table 3.If a user-supplied power supply is used, ensure that the voltage setting is compatible with the CMAXQUSB JU1setting.User-Supplied I 2C InterfaceTo use the MAX7324 EV kit with a user-supplied I 2C interface, install a shunt on jumper JU4’s 1-2 position.Connect SDA, SCL, and GND lines from the user-supplied I 2C interface to the SDA, SCL, and GND pads on the MAX7324 EV kit. Apply a 1.71V to 5.5V power supply to the VDD pad of the MAX7324 EV kit.Depending on the configuration of the user-supplied I 2C interface, it may be necessary to install the I 2C pull-up resistors, R10 and R11.Evaluate: MAX7324MAX7324 Evaluation Kit/Evaluation System_______________________________________________________________________________________5Table 2. RST Jumper ConfigurationE v a l u a t e : M A X 7324MAX7324 Evaluation Kit/Evaluation System6_______________________________________________________________________________________Figure 2. MAX7324 EV Kit SchematicEvaluate: MAX7324MAX7324 Evaluation Kit/Evaluation System_______________________________________________________________________________________7Figure 3. MAX7324 EV Kit Component Placement Guide—Component SideFigure 4. MAX7324 EV Kit PCB Layout—Component SideMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.8_____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600©2007 Maxim Integrated Productsis a registered trademark of Maxim Integrated Products, Inc.E v a l u a t e : M A X 7324MAX7324 Evaluation Kit/Evaluation System Figure 5. MAX7324 EV Kit PCB Layout—Solder Side。

MAX7474EVKIT+;中文规格书,Datasheet资料

General DescriptionThe MAX7474 evaluation kit (EV kit) is a fully assem-bled and tested printed-circuit board (PCB) that config-ures the MAX7474 IC for automatically equalizing a baseband composite video input signal from low-cost,unshielded twisted pair (UTP) such as Category 5e (Cat 5e) cable.The MAX7474 EV kit operates from a single 5V DC power supply. The EV kit accepts differential video input signals and provides a single-ended output. The EV kit features loss-of-sync and loss-of-burst outputs and also provides an option to set the video output sig-nal’s back-porch DC level.Features♦Single 5V DC Power-Supply Operation♦Differential Video Input♦Single-Ended AC- or DC-Coupled Output ♦Fully Equalized for Up to 300m of Cat 5e Cable ♦Improved Signal Quality for Up to 600m of Cat 5e Cable ♦Fixed Cable-Length Equalization in the Absence of Burst ♦Adjustable Back-Porch DC Level♦Loss-of-Burst (LOB) and Loss-of-Sync (LOS)Outputs ♦Evaluates the MAX7474 IC in 16-Pin SSOP Package♦Fully Assembled and TestedEvaluates: MAX7474MAX7474 Evaluation Kit19-4040; Rev 0; 2/08For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,or visit Maxim’s website at .Ordering Information+Denotes lead-free and RoHS-compliant.E v a l u a t e s : M A X 7474MAX7474 Evaluation Kit 2_______________________________________________________________________________________Quick StartRequired EquipmentBefore beginning, the following equipment is needed:•5V, > 100mA DC power supply•Video signal generator (e.g., Tektronix TG -700 or equivalent)•Video measurement equipment (e.g., Tektronix VM-700T or equivalent)•Active differential cable driverProcedureThe MAX7474 EV kit is fully assembled and tested.Follow the steps below to verify board operation.Caution: Do not turn on the power supply until all connections are completed.1)Install a shunt across pins 2-3 of jumper JU1 and ashunt across pins 1-2 of jumper JU2 (for ≥225m manual cable length equalization).2)Install a shunt across pins 1-2 of jumper JU3(back-porch DC level set by R4).3)Verify that no shunt is installed on jumper JU4 (AC-coupled video output).4)Connect the differential video input signal to theVIN connector or the V_INP and VINN test points.5)Connect the VOUT BNC connector on the EV kit tothe input of the video measurement equipment.6)Connect the power-supply ground to the GND padon the EV kit.7)Connect the 5V DC power supply to the VCC padon the EV kit.8)Set the video signal generator for the desired videoinput signal.9)Turn on the power supply and enable the videosignal generator output.10)Analyze the video output signal with the videomeasurement equipment.Detailed Description of HardwareThe MAX7474 EV kit is designed to evaluate the MAX7474 in a 16-pin SSOP package. The MAX7474 is an adaptive equalizer for video over UTP cable. The EV kit circuit is designed on a 2-layer, 1oz copper PCB and all components are installed on the top layer. The MAX7474 EV kit operates from a 5V DC power supply that can deliver at least 100mA of current.The MAX7474 EV kit accepts differential video input signals and provides a single-ended output nominal 1V P-P . A differential video input signal can be connect-ed to the VIN RJ-45 connector (pins 7-8), or the V_INP and V_INN test points on the MAX7474 EV kit. See Table 4 in the Jumper Selection section for the VIN RJ-45 connector pin configuration.The MAX7474 EV kit automatically equalizes the base-band composite video signal from a low-cost UTP cable,and provides an option to set the fixed equalization level to compensate for different input cable lengths up to 300m in the absence of a burst signal. The MAX7474fixed equalization level is jumper selectable. See the Jumper Selection section for more details.The MAX7474 EV kit provides an option to set the back-porch DC level for the video output signal. The video output’s back-porch DC level can be set by an on-board voltage reference (U2) or by an external volt-age source connected to the BP_LVL BNC connector.U2 is a MAX6037 voltage reference that provides an on-board 0 to 2.5V voltage reference for the back-porch DC level. Potentiometer R4 is used to set the back-porch DC level. The back-porch DC level is set to 1.4V at the factory. See the Jumper Selection section for more detail.Jumper SelectionFixed Equalization Level (FEQ0, FEQ1)The MAX7474 EV kit provides an option to set the fixed equalization level for the video input signal to compen-sate for different cable lengths in the absence of burst.Jumpers JU1 and JU2 set the fixed equalization level pins (FEQ0 and FEQ1) of the MAX7474 IC. When using cable lengths greater than 75m, set the fixed equaliza-tion level according to Table 1.Table 1. JU1 and JU2 Jumper SelectionEvaluates: MAX7474MAX7474 Evaluation Kit_______________________________________________________________________________________3Back-Porch DC Level (BPLVL)The MAX7474 EV kit provides an option to set the back-porch DC level for the video output signal.Jumper JU3 selects the voltage source that sets the back-porch DC level for the MAX7474 BPLVL pin. See Table 2 for shunt positions.Output Coupling (VOUT)The MAX7474 EV kit provides an option to select the output coupling of the video output signal on the MAX7474 EV kit for AC- or DC-coupling. Jumper JU4selects the output coupling for the MAX7474 output.See Table 3 for shunt positions.RJ-45 Connector Pin Configuration (VIN)The MAX7474 EV kit provides an RJ-45 connector to accept a differential video input signal at the VIN RJ-45 connector. Table 4 lists the RJ-45 connector pin configuration.The MAX7474 EV kit provides a 3-pin header to access the LOB and LOS status output signals and GND. The LOB outputs a logic-high when the color burst portion of the video signal is not detected at the input.Similarly, the LOS outputs a logic-high when the sync signal of the video signal is not detected at the input.Table 5 lists the header J1 pinout.Table 2. JU3 Jumper Selection (BPLVL)Table 5. Header J1 Pinout (LOB, LOS,GND)Table 4. RJ-45 Connector PinE v a l u a t e s : M A X 7474MAX7474 Evaluation Kit 4_______________________________________________________________________________________Figure 1. MAX7474 EV Kit SchematicEvaluates: MAX7474MAX7474 Evaluation Kit_______________________________________________________________________________________5Figure 2. MAX7474 EV Kit Component Placement Guide—Component SideFigure 3. MAX7474 EV Kit PCB Layout—Component SideE v a l u a t e s : M A X 7474MAX7474 Evaluation Kit Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.6_____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600©2008 Maxim Integrated Productsis a registered trademark of Maxim Integrated Products, Inc.Figure 4. MAX7474 EV Kit PCB Layout—Solder Side分销商库存信息: MAXIMMAX7474EVKIT+。

MAX20047评估套件说明书

MAX20047EVKIT#Evaluates: MAX20047 MAX20047 Evaluation KitGeneral DescriptionThe MAX20047 evaluation kit (EV kit) demonstrates the MAX20047 IC in an integrated and small package format. The EV kit is configured for 400kHz operation, with a 3A (min) per-port current limit. There are two Type A receptacles that can be used to demonstrate the charger emulation capabilities.Features●Configurable Charge-Detection Modes-USB-IF BC 1.2 Dedicated Charging Port (DCP)-Apple® 2.4A, 2.1A, 1.0A, and Samsung®Termination Resistors●Integrated, High-Efficiency, DC-DC Converter(440kHz to 2.2MHz)●Proven PCB Layout●Fully Assembled and TestedOrdering Information appears at end of data sheet.Quick StartTest PointsFigure 1 depicts the connections and test points available.Apple is a registered trademark of Apple Inc.Samsung is a registered trademark of Samsung Electronics Co., Ltd.Figure 1. MAX20047 Evaluation Kit Test PointsEvaluates: MAX20047MAX20047 Evaluation Kit Detailed DescriptionThe MAX20047 EV kit comes fully assembled, tested, and installed with a MAX20047AFPA/V+ IC, which includes a dual-package external FET added for short-to-battery protection.EV Kit InterfaceHVEN TerminalThe HVEN terminal connects to the IC’s HVEN pin through header J3. The HVEN pin is compatible with a wide range of input voltages, from +2.4V (logic-level high) to +40V (automotive battery level).Header/Jumper (J3)The J3 header/jumper selects the input source for the HVEN pin. Installing a jumper connects the HVEN pin directly to the VBAT terminal. With this selection, apply -ing a voltage ≥ 5.8V enables the IC. Note: There is a 2s delay before the BUS voltage appears at the HVBUS1 and HVBUS2 terminals. See T able 1 for J3 jumper selections.Alternatively, removing the jumper connects the HVEN pin to the HVEN test point. The HVEN test point is lightly pulled to ground with a 100kΩ resistor (R5). With this selection, the IC is disabled. With the jumper on J3 removed, alogic-level signal ≥ 2.4V connected to the HVEN test point enables the IC. A source voltage ≥ 5.8V must be applied to the VBAT terminal. This configuration permits an MCU GPIO signal to control the IC’s HVEN pin.VBAT/PGND TerminalsConnect the battery voltage input between VBAT and PGND. The IC’s DC-DC converter output voltage can be measured on the VOUT test point (see Figure 1).HVBUS1/HVBUS2 TerminalsThe BUS output voltage for each USB port can be mea-sured on the test points HVBUS1/HVBUS2, respectively.Basic Evaluation ProceduresTesting HVBUS1/HVBUS2 VoltageFigure 2 shows the test setup to evaluate the IC’s VBUS port voltages:Table 1. Jumper Selections (J3)REFERENCE DESIGNATORINSTALLED REMOVED J3HVEN pin connected to VBATHVEN pin pulled to PGND through a 100k Ω resistor (R5)PS1: +12.000 VM1: +5.200 VM2: +5.200 VPGNDHVBUS2 (+)HVBUS1 (+)MULTIMETEREvaluates: MAX20047MAX20047 Evaluation Kit Equipment Required for Test●One bench supply (12V/3A) ●Two multimeters (M1, M2)Procedure1) With the EV kit connected (see Figure 2), set PS1 to12.000V and enable the power-supply output.2) Wait at least 3s for the IC’s port control logic to validatea successful startup condition3) Observe that multimeters M1 and M2 indicate ≈ 5.2V.Testing DCP Charger Detection (iPhone ®)Figure 3 shows the test setup to evaluate the IC’s VBUS port voltages.Equipment Required for Test●Bench supply (12V/3A)●In-line USB voltage/current meter (DROK or similar) ●iPhoneProcedure1) Connect the equipment (see Figure 3), set PS1 to12.000V, and enable the power supply output.2) Wait at least 3s for the IC’s port control logic to validatea successful startup condition. Observe that M1 and M2 indicate ≈ 5.2V.Figure 3. Test Setup for Verifying DCP Charger Detection with an iPhone iPhone is a registered trademark of Apple Inc.PS1: +12.000 ViPhoneEvaluates: MAX20047 MAX20047 Evaluation KitTesting DCP Charger Detection (iPad®)Figure 4 shows the test setup to evaluate the IC’s VBUS port voltages:Equipment Required for Test●Bench supply (12V/3A),●In-line USB voltage/current meter (DROK or similar),and an iPad. Procedure1) Connect the equipment (see Figure 4), set PS1 to12.000V, and enable the power-supply output.2) Wait at least 3s for the IC’s port control logic to validatea successful startup condition. Observe that M1 andM2 indicate ≈ 5.2V.Figure 4. Test Setup for Verifying DCP Charger Detection with an iPad iPad is a registered trademark of Apple Inc.PS1: +12.000 VEvaluates: MAX20047MAX20047 Evaluation Kit Advanced Evaluation ProceduresTesting the VBUS Current LimitThe VBUS current limit for both USB ports are factory configured for 3.3A, which can be changed to 2.75A, 2.41A, or 2.1A by selecting a different R ILIM resistor. See the Other Configurations section for details on making this selection. Figure 5 shows the test setup to evaluate the IC’s VBUS current limit:Equipment Required●Bench supply (12V/3A)●Two multimeters (current measurement up to 5A) ●Electronic load (up to 5A)Procedure1) Connect the equipment (see Figure 5), set PS1 to12.000V, and enable the power-supply output.2) Wait at least 3s for the IC’s port control logic to com -plete a successful startup. Observe that M2 indicates ≈ 5.2V.3) Slowly ramp the electronic load sink current from 0.0Ato 3.5A. Observe the current indicated on M1 and voltage on M2.4) At some point between the 3.1A and 3.3A sink current,the current-limit threshold is exceeded, and the IC’s VBUS voltage to the port is shut down. The voltage in -dicated on M2 should fall to zero, and the current flow indicated on M1 should also fall to zero.5) Reduce the electronic load sink current below 3.0A.6) After 3s the VBUS voltage should return, and the portagain sources current to the electronic load.PS1: +12.000 VM1: +3.000 AM2: +5.200 VPGND PGND HVBUS2 (+)HVBUS1 (+)EL1: 5.200 V3.000 AEvaluates: MAX20047MAX20047 Evaluation Kit Testing Short-to-Ground FaultThe IC independently protects the HVBUS1/HVBUS2 channels against shorts to ground. Figure 6 shows the test setup to evaluate VBUS short-to-ground fault protection.Equipment Required●Bench supply (12V/3A) ●Multimeter●Short jumper wire (18AWG)Procedure1) Connect the equipment (see Figure 6), set PS1 to12.000V, and enable the power-supply output.2) Wait at least 3s for the IC’s port control logic to com -plete a successful startup. Observe that M1 indicates ≈ 5.2V.3) Connect a jumper wire between the PGND andHVBUS2 terminals.4) Observe that HVBUS1 voltage falls to zero, indicat -ing that the IC’s short-to-ground protection has been triggered. After ≈ approximately 3s, the 5.2V on the HVBUS1 terminal should return.5) Remove the short between HVBUS2 and PGND,observing no change in the HVBUS1 voltage.6) After ≈ 3s, the 5.2V on the HVBUS2 terminal shouldreturn.Figure 6. Test Setup for Verifying VBUS Short-to-Ground ProtectionPS1: +12.000 VM1: +5.200 VPGNDHVBUS2 (+)SHORT-TO-GROUNDJ3 JUMPER INSTALLEDEvaluates: MAX20047MAX20047 Evaluation Kit Testing Short-to-Battery FaultThe IC independently protects the HVBUS1 and HVBUS2 channels against shorts to battery. Figure 7 shows the test setup to evaluate VBUS short-to-battery fault protection.Equipment Required●Bench supply (12V/3A) ●One multimeter (M1) ●Short jumper wire (18AWG)Procedure1) Connect the equipment (see Figure 7), set PS1 to12.000V, and enable the power-supply output.2) Wait at least 3s for the IC’s port control logic to com -plete a successful startup. Observe that M1 indicates ≈ 5.2V.3) Connect a jumper wire between the VBAT andHVBUS2 terminals.4) Observe that HVBUS1 voltage falls to zero, indicat -ing that the IC’s short-to-battery protection has been triggered.5) Remove the shorting jumper wire. Observe M1. Whenthe overvoltage charge on the HVBUS1 output capac -itor decays enough, the IC’s protection logic initiates a recovery cycle, and after ≈ 5.200V, returns to the HVBUS1 and HVBUS2 terminals.Figure 7. Test Setup for Verifying VBUS Short-to-Battery ProtectionPS1: +12.000 VM1: +5.200 VPGNDHVBUS2 (+)SHORT-TO-BATTERYJ3 JUMPER INSTALLEDEvaluates: MAX20047MAX20047 Evaluation Kit Other ConfigurationsFOSC Resistor Selection (R FOSC )The switching frequency of the IC’s DC-DC is set by connecting a resistor between the FOSC pin and AGND. The internal oscillator can be tuned across a wide fre -quency range, providing greater system design flexibility. The graph shown in Figure 8 plots frequency vs. R FOSC resistance. See Table 2 for resistor values for selected switching frequencies.CONFIG Resistor Selection (R CONFIG )During device boot, the hold configuration is loaded with a value depends on decoding/reading the external CONFIG resistor. For more details regarding the value loaded as a function of resistors connected (see Table 3).Setting the VBUS Current Limit (R ILIM )ILIM is a multi-functional pin that can be used to program the VBUS current limit, Apple divider-current, and foldback-current threshold. T able 4 lists configuration options for the ILIM pin.Table 2. R FOSC Resistor Values for Selected Switching FrequencyTable 3. Configuration Pin OptionsTable 4. ILIM Pin OptionsFigure 8. Frequency vs. R FOSC ResistanceFOSC (kHz)224,320300,840380,500493,100595,800756,0001,000,5001,479,0002,237,000R FOSC (kΩ)13397.673.25948.738.328.719.112.7CONFIGURATION PIN CONNECTIONLEVEL (at 50µA)HOLD MODE HOLD TIME (MINUTES)Connect to AGND Ground Disabled N/A 24,900Ω to AGND 1.25V Enabled 30Connect to BIASVBIASEnabled60ILIM PIN CONNECTION APPLE DIVIDER-CURRENT (A)ILIMIT (A)FOLDBACK (A)Connect to AGND 2.4 3.3None 8,870Ω to AGND 2.4 3.3 2.41 15,800Ω to AGND 2.4 3.3 2.1 24,900Ω to AGND 2.4 2.75 2.1 35,700Ω to AGND 2.4 2.75None 49,900Ω to AGND 2.1 2.41None 68,100Ω to AGND 2.1 2.41 2.1 Connect to BIAS1.02.1NoneEvaluates: MAX20047 MAX20047 Evaluation KitPCB Layout GuidelinesGood PCB layout is critical to proper system perfor-mance. The loop area of the DC-DC conversion circuitry must be minimized as much as possible. Place the input capacitor, power inductor, and output capacitor very close to the IC. Shorter traces should be prioritized over wider traces. Similarly, the COMP network should be close to the IC and connect directly to AGND. The BIAS capacitor should be close to the IC and connect directly to PGND or via down to a layer 2 ground plane.A low-impedance ground connection between the input and output capacitors is necessary (route through the ground pour). Treat the SUP and PGND pins the same as you would an exposed pad. Place multiple vias in the pad and connect to all other ground layers for proper heat dissipa-tion; failure to perform this step can result in the IC repeat-edly reaching thermal shutdown. Prioritize the use of a large, single ground as opposed to multiground schemes; high-frequency return currents flow directly under the corresponding traces.Proper thermal dissipation is critical for this application. Maximize ground pour and keep a single continuous pour on the top and bottom layers; do not isolate pours. Most heat radiates from PGND and SUP, so adding internal and bottom-layer SUP pours can be beneficial. Do not place noncritical traces and components near the IC foot-print (on any layer). This allows for wide/large copper pour near the PGND and SUP vias. Contact the Maxim appli-cations team for layout reviews and recommendations.#Denotes RoHS compliant.PART TYPEMAX20047EVKIT#EV Kit Ordering InformationMAX20047 EV Kit Bill of MaterialsREFERENCEDESIGNATOR DESCRIPTION MFG. PART NUMER MANUFACTURER C1,C22C_OUT Ceramic Capacitor (1210) 47uF 10V X7R GRM32ER71A476KE15L MurataC31C_IN Electrolytic Capacitor( 8x6.2mm) 47uF 20% 35V SMD EEEFC1V470P PanasonicC41C_SUPSW Ceramic Capacitor (1206) 10uF 35V X7R CGA5L1X7R1V106K160AC TDKC5, C62C_SDMOS1/2Ceramic Capacitor (0805) 1uF 16V X7R GCM219R71C105KA37J MurataC7,C8,C123C_FILT_OUT, C_BST Ceramic Capacitor (0402) 0.1uF 50V X7R CGA2B3X7R1H104K050BB TDK C91C_COMP_P Ceramic Capacitor (0402) 3pF 50V C0G CGA2B2C0G1H3R3C050BA TDKC101C_COMP_S - 400kHz Ceramic Capacitor (0402) 2200pF 50V X7R GCM155R71H222KA37D MurataC111C_BIAS Ceramic Capacitor (0805) 2.2uF 16V X7R 0805CGA4J3X7R1C225K125AB TDKC13,C142C_FILT_IN Ceramic Capacitor (0402) 2200pF 50V X7R GCM155R71H222KA37D MurataC151CSUP_FILT Ceramic Capacitor (0603) 0.1uF 50V X7R CGA3E2X7R1H104K080AA TDKC16,C172C_FILT_OUT Ceramic Capacitor (0402) 0.22uF 35V X7R CGA2B1X7R1V224KC TDKC18, C192C_HVBUS1/2Ceramic Capacitor (1206) 10uF 25V X7R CGA5L1X7R1E106M160AC TDKFB1-33Input/Output Ferrite Ferrite Bead (1806) Automotive Grade,6 Amp Max, 9 mOhms DCRBLM41PG600SZ1L MurataGND1/22Multipurpose Test Point Black Test Point5011Keystone HVBUS1/22Multipurpose Test Point Red Test Point5010Keystone HVEN1Multipurpose Test Point Yellow Test Point5014Any (Keystone) J1,J22FCI_73725_USB_Rec Type A USB Receptacle, Through Hole, Right Angle73725Amphenol FCI J31HVEN_VBAT 2 Pos. 0.100" Header4-103327-0 Any (TE) L11L - 400kHz 4.7uH Molded Inductor, 10.5A Isat XAL6060-472MEB Coilcraft OUT1Miniature Test Point DNP DNP—PGND, VBAT2Test Point Wire Loop (18 guage uncoated bus bar)Any (Belden) Q11External FETs Dual N-Channel Mosfet (8SOIC) 30V 4.9A NTMD4820N On Semi R11R_COMP_S - 400kHz Resistor (0402) 16.2kΩ 1% 1/16W CRCW040216K2FKED Vishay Dale R21R_ILIM Resistor (0402) SHORT CRCW04020000Z0ED Vishay Dale R31R_FOSC Resistor (0402)73.2k 1% 1/16W CRCW040273K2FKED Vishay Dale R41R_CONFIG Resistor (0402) SHORT CRCW04020000Z0ED Vishay Dale R51R_HVEN Resistor (0402) 100kΩ 5% 1/16W CRCW0402100KJNED Vishay Dale R6, R72R_HVBUS1/2Resistor (0603) 1Ω ±5% 1/10W CRCW06031R00JNEA Vishay Dale U11Maxim Device Dual DCP Charging Port MAX20047AFPA/V+Maxim Integrated —1—PCB: MAX20047 Evaluation Kit MAX20047EVKIT#Maxim IntegratedMAX20047 EV Kit SchematicMAX20047 EV Kit SchematicMAX20047 EV Kit PCB LayoutsMAX20047 EV Kit Component Placement Guide—Top SilkscreenMAX20047 EV Kit PCB Layouts (continued)MAX20047 EV Kit PCB Layout—Top LayerMAX20047 EV Kit PCB Layouts (continued)MAX20047 EV Kit PCB Layout—Layer 2MAX20047 EV Kit PCB Layouts (continued)MAX20047 EV Kit PCB Layout—Layer 3MAX20047 EV Kit PCB Layouts (continued)MAX20047 EV Kit PCB Layout—Bottom LayerMAX20047 EV Kit PCB Layouts (continued)MAX20047 EV Kit Component Placement Guide—Bottom SilkscreenMaxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time.REVISION NUMBERREVISION DATE DESCRIPTIONPAGES CHANGED3/18Initial release—Revision HistoryFor pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at .MAX20047EVKIT#。

MAX3876EHJ中文资料

Typical Application Circuit
+3.3V 0.01µF VCC FILT PHOTODIODE IN VCC OUT+ SDI+ SDO+ SDOLOL +3.3V TTL +3.3V
0.01µF
6
PREAMPLIFIER OUTSDISLBI+ SLBISIS FIL+ FILSCLKO+ SCLKO-
元器件交易网
2.5Gbps, Low-Power, +3.3V Clock Recovery and Data Retiming IC MAX3876
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, VCC..............................................-0.5V to +7.0V Input Voltage Levels (SDI+, SDI-, SLBI+, SLBI-) ...........(VCC - 0.5V) to (VCC + 0.5V) Input Current Levels (SDI+, SDI-, SLBI+, SLBI-)..............±11mA CML Output Current Levels (SDO+, SDO-, SCLKO+, SCLKO-) ................................±22mA Voltage at LOL, SIS, FIL+, FIL-...................-0.5V to (VCC + 0.5V) Continuous Power Dissipation (TA = +85°C) 32-Pin TQFP (derate 16.1mW/°C above +85°C).............1.0W Operating Temperature Range MAX3876EHJ..................................................-40°C to +85°C Operating Junction Temperature Range (die) ..-55°C to +150°C Storage Temperature Range .............................-60°C to +160°C Processing Temperature (die) .........................................+400°C Lead Temperature (soldering, 10s) .................................+300°C

MAX20754EVKIT8 评估套件说明说明书

Evaluates: MAX20754 and MAX20790MAX20754EVKIT8Evaluation KitOne Analog Way, Wilmington, MA 01887 U.S.A. | Tel: 781.329.4700 | © 2021 Analog Devices, Inc. All rights reserved.© 2021 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.Click here to ask an associate for production status of specific part numbers.General DescriptionThis MAX20754EVKIT8 evaluation kit (EV kit) demon-strates the MAX20754 PMBus™-compatible dual-output multiphase power-supply controller. The controller gener-ates six pulse-width modulated (PWM) control signals, or “phases.” The MAX20754EVKIT8 EV kit is a single-output design, with all six phases assigned to one output. The output uses coupled inductor topologies. Coupled induc-tors reduce the effective inductor value and size without excessive ripple current, reducing required output capaci-tance, and improving transient response.The EV kit also demonstrates the MAX20790 power-stage device; there are six MAX20790 devices, one per phase.Features●Optimized for Single +10V to +16V Supply• Onboard +3.3V Regulator (MAX17501) ●Generates One Output• Output: 6-Phase, 1V, 225A ●500kHz Switching Frequency ●Enable Switch●PMBus Configuration and Control• Compatible with Maxim’s PowerTool™ GUI • Easy Connection to PC Using MAXPOW-ERTOOL002 USB-to-SMBus Interface (order separately) ●Status LEDs• Power-Good• Power-Stage Fault • SMBus Alert ●Proven PCB Layout●Compensation Scheme Optimized for HighBandwidth ●Fully Tested and Assembled319-100863; Rev 0; 12/21Ordering Information appears at end of data sheet.PMBus is a trademark of SMIF , Inc.PowerTool is a trademark of Maxim Integrated Products, Inc.MAX20754EVKIT8 BoardEvaluation KitQuick StartRequired Equipment●12V DC power supply capable of delivering 300W atthe desired input voltage●Windows PC with a spare USB port●MAXPOWERTOOL002 USB-to-SMBus Interface(order separately)●Maxim Digital PowerTool GUI softwareOptional Equipment●AC/DC “wall adapter” for convenient low-power eval-uation, connecting to J5 on the EV kit. For example:• CUI p/n ETSA120500UC-P5P-SZ (12V, 5A, 60Wmax)• CUI p/n EMSA120300-P5P-SZ (12V, 3A, 40W max)●300MHz four-channel oscilloscope●BNC-to-SMB cables for convenient, low-noise oscil-loscope connection to the input and output voltagesense points. For example: CD International Tech-nology p/n BSB-174TPR-3.●Electronic load capable of sinking 240A at 1V• Ask about the Maxim MINILOAD device●Digital multimeter (DMM)ProcedureNote: In the following sections, text in bold refers to items directly from the EV kit software.The EV kit is fully assembled and tested. Follow the steps below to verify board operation.Caution: Do not turn on the power supply until all connections are completed.1) Visit the Maxim Integrated website to download andinstall the latest version of the Digital PowerToolsoftware.2) Connect the USB cable from the PC to the MAX-POWERTOOL002 interface adapter.3) Connect the adapter ribbon cable to the matchingheader J13 on the EV kit, ensuring that J13-Pin 1 isadjacent to the red wire on the ribbon cable.4) Connect the DC power supply positive lead to J6 andthe negative lead to J7 (or use an AC-DC adapterthrough J5 using a center-positive 2.1mm I.D. x5.5mm O.D. plug).5) If available, connect the electronic load(s) to theoutputs at screw terminals ST1, ST2, ST3, and ST4, being careful to observe the VOUT and GND polarity indicated by the silkscreen labels.6) If available, connect the oscilloscope to the EV kit forwaveform analysis. Coaxial SMB cable connections J8, and J9 allow low-noise measurement of the input and output ripple waveforms. (Note that the inputvoltage signal at J8 is resistively attenuated 20:1 toprotect oscilloscope inputs.)7) Ensure that jumpers JP1 and JP2 have shuntsinstalled.8) Enable the external 12V supply.9) Enable the onboard MAX17501 12V-to-3.3V sup-ply circuit with switch S5. This supplies 3.3V to theMAX20754, which in turn generates 1.8V power forthe MAX20790 power-stage devices.10) Start the GUI software. The “Dashboard” windowshould appear as shown in Figure 1.11) Enable the MAX20754 output by operating switch S2on the EV kit, or by setting the OPERATION and ON_ OFF_CONFIG commands in the PowerT ool GUI.Evaluation KitDetailed Description of SoftwareThe PowerT ool software presents system-level information on the Dashboard tab. This view collects basic information for all Maxim PMBus devices found on the bus. This tab configures sequencing and output voltage levels and pres-ents an overview of the system status. Clicking the Stop Communication button stops all PMBus transactions from the PowerT ool GUI. T o force detection of all active devices on the bus, click the Search for Devices button.For detailed information on a particular device, click on the sub-tab for that device’s slave address. This opens a view with a set of further sub-tabs specific to that device as shown in Figure 2. The sub-tabs available vary depending on the GUI version and the connected device’s capability, but typically include Configuration, Monitor, Faults Set, and PMBus Command.The Configuration tab presents the most commonly used PMBus command data in human-readable form. The device status is updated by continuous polling of these commands. Configuration settings for an individual device can be saved to or restored from an external file. The PMBus command settings can be saved to or restored from the device’s internal nonvolatile memory as well.The Monitor tab shows continuously updated telemetry data from the device. Rolling plots of output voltage, input voltage, output current, and temperature data are shown, including indication of fault limits relative to the operating point.Figure 1. Maxim PowerTool Graphical User Interface Software Dashboard WindowEvaluation KitThe Faults Set tab allows the user to configure andmonitor the status of most protection and warning func-tions. The fault levels and fault response commands areconfigured from this tab. The full contents of the STATUS_register commands are available by clicking the ViewFault/Warning bit by bit button. Fault and warning flags are cleared by clicking the Clear Fault/Warning button,which sends the CLEAR_FAULTS PMBus command tothe device.The PMBus Command tab shows all supported PMBus commands in a series of sub-tabs, allowing detailed con-figuration and analysis of the command values. The user can view the command values in a hexadecimal or deci-mal format by checking or clearing the Force Hex check-box. The Use PEC checkbox enables or disables Packet Error Checking for all GUI communications. Note that the command data is continuously updated by polling; typing a new value into the text boxes causes the new value to be sent to the device.Figure 2. Detailed View for One Device; Configuration Sub-TabEvaluation KitDetailed Description of HardwareThe MAX20754EVKIT8 demonstrates a single-output step-down power supply solution, with one six-phase output, which makes use of the coupled inductors. This solution provides high output-current with high efficiency, fast load-transient response, and low ripple and noise.The MAX20754 controller automatically interleaves all PWM outputs assigned to a given output at even inter-vals. The output is six-phase resulting in 60° timing. Each PWM signal is connected to one MAX20790 power-stage device, operating in parallel configuration. This configura -tion is capable of supplying up to 37.5A per phase. Each power-stage is in turn connected to one winding of a coupled inductor.The MAX20754 controller evenly shares the load current between phases in a given output. The EV kit is con-figured to operate both outputs at 500kHz fundamental switching frequency, but can be modified to operate anywhere from 300kHz to 800kHz with appropriate com -pensation network changes. The output is set to supply 1V. The maximum output current for the output is 225A.The output voltage, output rise-time and fall-time, switch -ing frequency, PMBus address, slope compensation, and maximum output current are set using only five external resistors, allowing simple setup and application configura -tion that does not require PMBus commands. Refer to the MAX20754 and MAX20790 integrated circuit data sheets for complete details on design and component selection.Table 1. Jumper JP1Table 2. Jumper JP2Table 3. Connector ListSHUNT POSITIONDESCRIPTIONInstalled MAX17501 +3.3V output connected to MAX20754 V DD3P3 input.Not installedMAX20754 can be powered by an external +3.3V supply at TP35.SHUNT POSITIONDESCRIPTIONInstalled MAX17501 +3.3V output connected to AUX3P3 rail (ENx debounce and status LED logic, etc.).Not installedThe AUX3P3 rail can be powered by an external +3.3V supply at Pin 2 of JP2.REFERENCE DESIGNATORDESCRIPTIONJ6Input supply positive voltage (+5V to +16V)J7Input supply groundST1Rail 1 output positive voltage ST2Rail 1 output ground ST3Rail 1 output positive voltage ST4Rail 1 output groundJ13Header for connection to MAXPOWERTOOL002 USB-to-SMBus interface.Pin 1: SCL Pin 3: SDA Pin 7: ALERTEven-numbered pins: GroundJ8SMB jack for input supply monitoring. This connection has a 1/20 resistive divider with 50Ω back-impedance. Connect to an oscilloscope with 20x scaling and ≥1MΩ input resistance.J9SMB jack for Rail 1 output voltage monitoring. This connection has 50Ω back-impedance. Connect to an oscilloscope with 1x scaling and ≥1MΩ input resistance.J5Alternate input supply barrel connector, 2.1mm I.D. x 5.5mm O.D. barrel jack, center-positive. Do not exceed 5A current.Evaluation KitTable 4. SwitchesTable 5. Test PointsREFERENCE DESIGNATORFUNCTIONS5SPDT toggle switch. Enable MAX17501 +3.3V buck regulator to supply V DD3P3Green light: output enabledS4Momentary tactile switch; no function on MAX20754S2SPDT toggle switch. Enable Rail 1 output regulation.Green light: PGOOD1 pin highAmber light: ALERT pin asserted lowRed light: FAULT pin asserted low (power stage fault detected)REFERENCE DESIGNATORDESCRIPTIONTP21ALERT signal (open-drain)TP20FAULT signal (open-drain)TP36SDA signal (open-drain)TP37SCL signal (open-drain)TP17EN1 signal (open-drain)TP7Input supply positive voltage TP8Input supply groundTP19Input voltage sense point for efficiency measurements TP22Input ground sense point for efficiency measurements TP18PGOOD1 signal (open-drain)TP6PWM0 signal (Rail 1)TP5PWM1 signal (Rail 1)TP4PWM2 signal (Rail 1)TP3PWM3 signal (Rail 1)TP2PWM4 signal (Rail 1)TP1PWM5 signal (Rail 1)TP13Rail 1 loop-response (Bode plot) measurement positive injection point (see MAX20754 EV Kit Schematic )TP23Rail 1 loop-response (Bode plot) measurement negative injection point (see MAX20754 EV Kit Schematic )TP25Rail 1 output voltage efficiency measurement point TP26Rail 1 output ground efficiency measurement pointTP9Rail 1 output voltage feedback sense point (for line/load regulation accuracy measurement with DMM)TP10Rail 1 output ground feedback sense point (for line/load regulation accuracy measurement with DMM)TP34V DDS supply; +1.8V power to MAX20790 power stage, from MAX20754 integrated switcher output TP35V DD3P3 supply; +3.3V power to MAX20754 integrated switcher TP29, TP30, TP31, TP32,TP33, TP39GroundEvaluation Kit#Denotes RoHS compliance.PARTTYPE MAX20754EVKIT8#MAX20754 EV Kit MAXPOWERTOOL002#USB-to-SMBus Interface5.0mV/div(AC-COUPLED)V OUT(V = 1V, I = 0A, f = 500kHz)PHASE MARGIN = 62.24BANDWIDTH = 68.75kHz50mV/div(AC-COUPLED)50A/divOrdering InformationEvaluation KitMAX20754 EV Kit Bill of MaterialsEvaluation KitMAX20754 EV Kit Bill of Materials (continued)0 0Evaluation KitMAX20754 EV Kit SchematicP W M 2R A T I O = 0.068238 T O M A T C H V I N _S C A L E _M O N I T O R D E F A U L TN O D R O O PR I N TZ 12 2 16 2 5 4 13 0 <----P H A S E S F I R I N G O R D E R 1 2P W M 5P W M 0O U T P U T #1V O U T 1:R 1R D E SZ 25 2 4 1 3 04 2 4 1 33 2 1 3R L DP W M 3P W M 1P W M 4O U T P U T #1C O M P E N S A T I O N N E T W O R K S C H E M E 9AC 2R 2C L DC I N TT O N _R I S E , T O F F _F A L L : 0.5M SO C P = 257AA D D R E S S : 0X 5A M R A M P : M H (0X 25, 37 D E C .)F R E Q U E N C Y _S W I T C H : 500K H Z V O U T _C O M M A N D : 1.0V T P 33T P 30T P 29T P 23T P 13T P 34R 58R 47R 21R 38R 37R 20R 34C 37R 27R 33C 29R 24C 25C 28R 16R 17C 90000U 1C 11C 12C 13C 14C 15C 16C 6C 2R 6R 5R 4R 3R 1C 5C 1C 4C 3L 1T P 6T P 5T P 4T P 3T P 2T P 1R 8R 7C 7C 47R 9R 111R 2R 113R 57R 36R 35R 19R 18R 46R 15C 1068P F A 1_O U T 1A 2B _O U T 1P G M C0.47B L U EV D DB L AC KB L AC KB L AC KS N S N 1A P A D A P A D 22U F22U FA P A D A P A D A P A D A P A D 1.2U HA 3_O U T 1A 3_I N 1499S N S P 14992.49K100P FR R E FA 1_O U T 1A 2_I N 1A 2_O U T 1A 2B _O U T 1C S 4M S C L SD AF A U L T _NP G O O D 1P G M DP G M CP G M BP G M AC S 0ME N 1A L E R T _N B P A DB P A D0.50%0.1U F68P F68P F 68P F 034K1K101000P F1K 1K1654994994021K1K1K332806C S 1M C S 2MV D D V I N _E F F _NP W M 1C S 5SA 3_I N 1P W M 5U V _I N C S 0S C S 1S C S 2S C S 3S C S 4S C S 5S C S 3M P W M 4P W M 3T S 1SP W M 2P W M 0P G M AC S 4SC S 3SC S 1SC S 0S4990.1U FA 2_O U T 1V D DC S 5M 0.1U FV D D 3P 322U FV D D S20K 22U FA 3_O U T 1787100P F49968P FD N I D N ID N I D N I D N ID N ID N I D N IC S 2S68P F D N I220P F0.015U F D N I1200P FP G M D 4.64K6495.76K P G M BA 2_I N 10.015U F 6040V I N _E F F _P00Evaluation KitMAX20754 EV Kit Schematic (continued)M A X 20790M A X 20790D N IR 120R 119P W M 0R 122C 244121U 24700P F 4700P F C 164P W M 4R 123D N I D N IR 1144700P F U 37123114700P F C 55C 165C 89C 103C 166C 167C 119C 120C 24C 39C 117C 118C 186C 187C 129C 130C 230C 231C 232C 184C 185C 26R 1211210987654C 19R 10C 17C 21C 131C 132C 133C 50C 51111098654324321L 2C 148C 147C 146C 53R 50V I N10U F10U F 10U F10U F47U F 0.22U F10U F10U F10U F 47U F1000P F4.7A V D D 0V I N10U FD N ID N I D N I D N I D N ID N ID N I100U F100U F 100U FA V D D 40.1U FC L 1208-2-100T R -R L X 0V D D SV D D SL X 4V O U T 1C S 4ST S 1S V O U T 1T S 1SC S 0S0.22U F0.1U F4700P F1.0U F47U F47U F 101.0U F 1.0U F1U F 00100U F100U F100U F1.0U F4.71000P F01U F104700P F B II NI NB II NI NEvaluation KitMAX20754 EV Kit Schematic (continued)M A X 20790M A X 20790451U F C 33C L 1208-2-100T R -RC 2274700P F U 4D N I6L X 2P W M 1C 107C 174C 175C 123C 124C 106C 38C 45C 172C 173C 23C 108C 109C 178C 179C 125C 126C 153C 224C 176C 177C 142C 141R 26121110987321R 117R 125C 242C 30R 25121110987654321U 5R 115C 8R 128R 126R 127C 139C 138C 1404321L 3C 36C 137C 35C 31C 3210U F10U F10U F10U F47U F 4.74.7D N I C S 2S1000P F1.0U FD N ID N ID N ID N ID N I D N ID N ID N I100U FV O U T 1C S 1S1000P FL X 10.22U F0.1U FA V D D 1V D D SV D D SV I NV I NA V D D 2T S 1SP W M 2T S 1SV O U T 10.1U F1047U F 47U F 4700P F 4700P F 1.0U F 4700P F 10U F 10U F 10U F100U F100U F01U F00100U F100U F10U F100.22U F4700P F4700P F 47U F1.0U F100U F1.0U FI NI NB II NI NB IEvaluation KitEvaluation KitMAX20754 EV Kit Schematic (continued)E F F I C I E N C Y M E A S U R E M E N T P O I N T - C O N N E C T W I T H L E A D S T O T P 26V I N S E N S E P O I N T F O R E F F I C I E N C Y M E A S U R E M E N T(A L S O F E E D S U V _I N )E F F I C I E N C Y M E A S U R E M E N T P O I N T - C O N N E C T W I T H L E A D S T O T P 25V O U T 1 S M BV I N S M B (D I V I D E B Y 20)T P 10T P 8T P 7T P 9S T 4S T 3C 218C 241C 219C 220C 221C 222C 235C 234C 238C 237C 240C 236C 239C 217C 216C 215C 214C 213C 195C 194C 193C 192C 191C 190C 223C 159C 158C 67C 157C 66C 156C 155C 154J 8J 9J 5C 210C 211C 196C 197C 91C 92C 93C 94C 203C 198C 199C 200C 201C 202C 204C 205C 206C 207C 208C 209C 84C 85C 86C 87C 88C 95C 96C 97C 98C 99C 100C 101C 188C 189D 2T P 26T P 25C 83C 82C 81C 80C 79C 76C 77C 78C 75C 65C 63C 62C 56C 212C 74C 73C 71C 72C 70C 69R 66S T 2S T 1R 67R 64C 68R 65D 1C 152C 151C 150C 149C 61C 60C 59C 58C 57J 7J 6R 63R 60T P 22T P 19R 61R 62A P A DA P A DR E D A P A D 0V I N _E F F _NB L AC K100U F B L A C K100U F 100U F 0.01U F 0.01U F A P A D V I N _E F F _P78081000.01U F 330U F108-0740-001R E D100U FM B R S 540T 3D N I D N I D N ID N ID N ID N I100U F100U F100U F100U F100U F 100U F 100U F 100U F 100U F D N ID N I 100U F D N I D N ID N ID N ID N ID N I 0V O U T 1V O U T 1V I NV O U T 1V O U T 1V O U T 1V O U T 10.01U F 0.01U F0.01U F 100U F 100U F100U F100U F 100U F100U F100U F 100U F 100U F 100U F 0.01U F 0.01U F 100U F 100U F 100U F100U F100U F100U F100U F100U F100U F100U F100U F100U F100U F100U F100U F100U F100U F 100U F100U F 100U F100U F 0.01U F 100U F 100U F0.01U F 100U F100U F100U F 0.01U F 100U F 100U F100U F 100U F100U F100U F100U FM B R S 540T 3100U F100U F0.01U F 100U F330U F 100U F 100U F 100U F 100U F 7808100U F 100U F 100U F 0.01U F 100U F100U F 100U F 100U F S N S N 17808100P FS N S P 1131-3701-266131-3701-2661K 52.3V I NV O U T 10V O U T 1330U F108-0740-001V O U T 149.97808P J -102A HEvaluation KitMAX20754 EV Kit Schematic (continued)T P 35J 4J 3J 20J 13T P 37T P 36R 102R 99R 98Q 1R 40S 5R 59R 48R 39S 5R 23C 225J P 2J P 1C 113L 5C 41U 8C 40C 112C 27R E S E T _NV D D 3P 3R E G 3P 3A L E R T _NP C C 02S A A NA U X 3P 3S C LA P A DS D AA P A D10033U HP C C 02S A A NV I NT S W -108-07-L -DS C LS D A100K2N 7002150V I N100KV O U T 1V O U T 1V O U T 1E N 3P 3R E G 3P 3A U X 3P 337.4KU P S -08-01-01-L -R AG 12J P C F U P S -08-01-01-L -R AU P S -08-01-01-L -R A100K100K100K1.0U FG 12J P C F47U F 1.0U F3300P F10U F10U FR E DM A X 17501E A T B +Evaluation KitEvaluation KitMAX20754 EV Kit PCB Layout—Top SilkscreenMAX20754 EV Kit PCB Layout—Internal Layer 2 GND MAX20754 EV Kit PCB Layout—Top LayerMAX20754 EV Kit PCB Layout—Internal Layer 3 SignalEvaluation KitMAX20754 EV Kit PCB Layout—Internal Layer 4 Signal MAX20754 EV Kit PCB Layout—Bottom Layer MAX20754 EV Kit PCB Layout—Internal Layer 5 GND MAX20754 EV Kit PCB Layout—Bottom SilkscreenEvaluation KitInformation furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use.Specifications subject to change without notice. No license is granted by implicationor otherwise under any patent or patent rights of Analog Devices. Trademarks andregistered trademarks are the property of their respective owners.REVISION NUMBERREVISION DATE DESCRIPTIONPAGES CHANGED12/21Initial release—Revision History。

MAX5945EVKIT中文资料

General DescriptionThe MAX5945 evaluation kit (EV kit) is a fully assembled and tested surface-mount circuit board featuring an Ethernet four-port network power controller circuit for -48V supply rail systems. The MAX5945 IEEE 802.3af-compliant network power controller is available in a 36-pin SSOP package. The circuit includes four n-channel power MOSFETs used to form the main power-sourcing equipment (PSE) circuit on the EV kit. The MAX5945 is used in power-over-ethernet (POE) applications requiring DC power over four Ethernet network ports. The EV kit provides optical isolation for the I 2C-compliant 3-wire interface. The isolated interface connects to a PC parallel port (LPT) through a MAXSMBus interface board. The EV kit can easily be reconfigured for interfacing to a user’s stand-alone microcontroller for isolated or nonisolated operation.The MAX5945 EV kit requires a -32V to -60V power sup-ply (-48V supply rail) capable of supplying 2A or more to the EV kit for powering the power device (PD) through the four 10/100 base-TX Ethernet network ports. The EV kit demonstrates PD discovery, classification, current-limit control and other functions of an IEEE 802.3af-com-pliant PSE. The user must also supply two separate 3.3V power supplies capable of supplying 100mA for the EV kit’s digital logic and 3.3V (V CC ) optically isolated 3-wire interface. The MAXSMBus interface board requires a dedicated 9V power supply capable of supplying 250mA. The +9V power supply is not required for noniso-lated operation.The MAX5945 controls the -48V DC power to each of the four Ethernet network ports by controlling each port’s power MOSFET and sensing current through the respec-tive port’s current-sense resistor. The current is fed to a 10/100 base-TX Voice-over-IP (VoIP) magnetic module at each Ethernet network output port. The MAX5945 EV kit provides a separate independent power channel for each of the four Ethernet network output ports.The EV kit demonstrates the full functionality of the MAX5945 for each power channel such as configurable operational modes, PD detection, PD classification, over-current protection, current foldback, under/overvoltage protection, and AC disconnect monitoring. All of these features are configurable on the EV kit and additional test points for voltage probing and current measurements have been provided.The MAX5945 EV kit software is Windows® 95/98/2000-compatible and provides a user-friendly interface to demonstrate the features of the MAX5945 while provid-ing access to each register at the bit level. The program is menu-driven and offers a graphic interface with control buttons. The program also includes a macro engine to allow automated evaluation and testing of the MAX5945at the system level. The program’s macro output files can be automatically saved.Order the MAX5945EVSYS for a complete PC-based evaluation of the MAX5945. Order the MAX5945EVKIT if you already have a MAXSMBus interface board or do not require PC-based evaluation of the MAX5945.Features♦IEEE 802.3af-Compliant Power-Sourcing Equipment (PSE) Circuit ♦Input Voltages-32V to -60V Providing 2A (-48V Power Circuit, 350mA/Port)+3.3V Providing 100mA (Digital Logic Power)V CC (+3.3V) Provides 100mA (Optical Interface)+9V Provides 250mA (SMBus LPT Interface Board)♦Ethernet Network PortsFour RJ-45 10/100 Base-TX Ethernet Network Input PortsFour RJ-45 10/100 Base-TX Ethernet Network Output Power-Over-Ethernet Ports♦Demonstrates Four Separate Independent Power Switch Controllers♦Provides PD Detection and Classification♦Configurable DC/AC Load Removal Detection and Disconnect Monitoring♦Configurable Current Sensing♦Convenient Voltage and Current Test Points ♦Four Output-Port LED Status Indicators ♦Optically Isolated 3-Wire I 2C-Compliant PC Interface♦Reconfigurable for Stand-Alone Operation or with External Microcontroller♦Windows 95/98/2000-Compatible Software ♦Fully Assembled and TestedEvaluate: MAX5945MAX5945 Evaluation Kit/Evaluation System________________________________________________________________Maxim Integrated Products119-3832; Rev 0; 9/05For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .Windows is a registered trademark of Microsoft Corp.Ordering InformationE v a l u a t e : M A X 5945MAX5945 Evaluation Kit/Evaluation System 2_______________________________________________________________________________________MAX5945EVSYS(MAX5945 EV System)Evaluate: MAX5945MAX5945 Evaluation Kit/Evaluation System_______________________________________________________________________________________3EconOscillator is a trademark of Dallas Semiconductor.E v a l u a t e : M A X 5945MAX5945 Evaluation Kit/Evaluation System 4_______________________________________________________________________________________Quick StartThe MAX5945 EV kit is fully assembled and tested.Follow these steps to verify board operation. Do not turn on the power supplies until all connections are completed.Required Equipment:•One -32V to -60V, 2A-capable DC power supply•Two separate +3.3V, 100mA-capable DC power supplies•One +9V, 250mA-capable DC power supply•Maxim MAX5945 EV kit and MAXSMBus interface board•Windows 95/98/2000 computer with a spare parallel (printer) port•25-pin I/O extension cable, straight-through, male-to-female cable•One voltmeter for confirming output voltagesHardware Connections1)Connect the MAXSMBus interface board to theMAX5945 EV kit’s interface connector J1.2)Verify that a shunt is installed on pins 2 and 3 ofjumpers JU1 (A0, low), JU2 (A1, low), JU3 (A2,low), and JU4 (A4, low) to set the MAX5945 I 2C-compliant slave address to 0x40 hexadecimal.3)Verify that a shunt is installed on pins 2 and 3 ofjumpers JU5 (signal mode).4)Verify that a shunt is installed on pins 1 and 2 ofjumpers JU6 (automatic mode) and JU8 (on-board 100Hz oscillator running).5)Verify that a shunt is installed on pins 2 and 3 ofjumper JU7 (OSC_IN, 100Hz oscillator).6)Verify that no shunt is installed on jumpersJU15–JU18 (AC disconnect).7)Verify that shunts are installed on jumpersJU19–JU22 (RC filter).8)Connect one of the +3.3V DC power supplies to themetal VDIG banana jack or PC board pad and the supply ground to the metal DGND banana jack or PC board pad.9)Connect the -32V to -60V DC power supply to themetal VEE banana jack and the supply ground to the metal GND banana jack.10)Connect the second +3.3V DC power supply to theoptically isolated VCC pad and the supply ground to the OPTO_GND pad.Note: The GND is more positive than the VEE jacks.11)Connect the +9V DC power supply to theMAXSMBus interface board’s POS9 pad and the supply ground to the GND pad on the MAXSMBus Interface board.12)Connect a PD to the desired Ethernet network out-put port’s RJ-45 connector on the MAX5945 EV kit as listed below:•PORT1_OUT at J7•PORT2_OUT at J8•PORT3_OUT at J9•PORT4_OUT at J10This step is optional if network connectivity is not required.Component Suppliers13) Connect the MAX5945 EV kit’s network input LAN port to the corresponding PD LAN connection as listed below:•PORT1_IN at J3•PORT2_IN at J4•PORT3_IN at J5•PORT4_IN at J614)Connect the computer’s parallel port to theMAXSMBus interface board. Use the straight-through 25-pin female-to-male cable. The EV kit software uses a loopback connection to confirm that the correct port is selected.15)Install the MAX5945 evaluation software on your com-puter by running the INSTALL.EXE program on the CD-ROM disk. The program files are copied and icons are created for them in the Windows Start Menu.Restart the computer when prompted. For Windows 2000, you may need administrator privileges.16)Turn on all four power supplies.17)Start the MAX5945 program by opening its icon inthe Start Menu.18)Observe as the program automatically detects theparallel port connected to the MAXSMBus, starts the main program, and then automatically detects the I2C-compliant address configured for the MAX5945.19)Load and run the Power_on.smb macro programfrom the File|Open|Run Macro menu. The script automatically runs after selecting open.20)All four network port green status LEDs should light.21)Four other example macros allow quick testing of themanual mode, auto mode, semiauto mode, and with DC and/or AC load disconnect detection. These macros are:•test#1_manual_mode.smb•test#2_auto_mode_dc.smb•test#3_auto_mode_dc.smb•test#4_semiauto_mode.smbPlease read the embedded comments in each macro for detailed descriptions using a plain text editor.22)Pressing pushbutton switches S1 through S4 shutsdown PORT1_OUT through PORT4_OUT’s respec-tive DC power.23)Test points TP3 (U1 V EE pin) and GND test points areprovided throughout the PC board to observe desiredsignals with an oscilloscope or voltage meter.24)Header J2 is provided to monitor the SHDN pin sig-nals. These signals are not isolated and are refer-enced to the DGND. DGND and GND are shortedby a PC board trace between the pads of resis-tor R72.25)Pressing the RESET pushbutton turns off power toall ports and returns the MAX5945 IC to the power-up condition.Note:An uninstall program is included with the soft-ware. Click on the UNINSTALL icon to remove the EVkit software from the hard drive.Detailed Descriptionof HardwareThe MAX5945 EV kit features a 10/100 base-TX Ethernet four-port network power controller circuit for-48V supply rail systems. The EV kit’s PSE circuit usesthe IEEE 802.3af-compliant MAX5945 network power controller, four n-channel power MOSFETs in SOT-223 surface-mount packages, four surface-mount current-sensing resistors and two 10/100 base-TX VoIP mag-netic modules to form the basic portion of a PSE circuit.The MAX5945 EV kit has been designed as an IEEE802.3af-compliant PSE and demonstrates all the required functions such as PD discovery, classification, current-limit control of a connected PD at each Ethernet output port, and DC/AC disconnect detection. The EVkit also has a separate on-board, 100H z sine-wave oscillator circuit for the AC disconnect detection fea-tures. An IBM-compatible PC is used to communicatewith the slave MAX5945 over an I2C-compliant 3-wire interface, optically coupled logic, and a 2-wire to parallel port (LPT) MAXSMBus interface board.The MAX5945 EV kit PSE circuit requires a -32V to -60V power supply (-48V supply rail) capable of supplying2A to the EV kit’s GND and VEE steel banana jacks orPC board pads. Two separate +3.3V power supplies capable of supplying 100mA are also required for theMAX5945 digital logic (VDIG, DGND) and optically iso-lated I2C-compliant 3-wire interface. Note that DGNDand GND are shorted by a PC board trace betweenthe pads of resistor R72.The MAX5945 controls the -48V DC power to each ofthe four 10/100 base-TX Ethernet network output portsby regulating the respective port’s n-channel powerEvaluate: MAX5945MAX5945 Evaluation Kit/Evaluation System _______________________________________________________________________________________5E v a l u a t e : M A X 5945MOSFET and sensing current through the respective port’s current-sense resistor. The current is fed to a 10/100 base-TX VoIP magnetic module connected to the respective Ethernet network output port’s RJ-45jack. An IEEE 802.3af-compliant PD connects to the respective Ethernet network output port on the EV kit.The PD can be located up to 350ft from the EV kit when connected with Category 5 Ethernet cable. The MAX5945 EV kit provides separate and independent power control for each of the four Ethernet network out-put ports. The 10/100 base-TX VoIP magnetic module is decoupled to the EV kit’s chassis ground by system chassis capacitors C19–C22, C24, and C25. The EV kit’s isolated chassis ground (Chassis_GND) PC board pad connects to the network system ground.The MAX5945 EV kit features configurable operational modes, PD detection, PD classification, overcurrent protection, current foldback, under/overvoltage protec-tion, DC and AC disconnect monitoring. The overcur-rent protection can be programmed through software and/or changing current-sense resistors R1–R4 for the desired output port. Each of the four modes of opera-tion (auto, semi, manual, shutdown) can be evaluated after configuring jumper JU6 and configuring the appropriate MAX5945 register (see Table 3). PD detec-tion diodes D1–D4 can be bypassed to reduce power dissipation when AC disconnect monitoring is not required, using jumpers JU15–JU18. Each port’s AC detection circuit resistor-capacitor diode (RCD) net-work can be reconfigured with a jumper also. See Tables 4, 8, and 9 for various AC detection-disconnect and oscillator configurations. Each port features a 600W bidirectional overvoltage transient suppressor diode (D9–D12) and decoupling capacitor (C26–C29)for transient protection at the port.Test points and jumpers have been provided for volt-age probing and current measurements of each chan-nel’s power circuit. Additionally, a 6-pin 0.100in center header is also provided for monitoring the SHDN1,SHDN2, SHDN3, SHDN4, and RESET signals routed to the MAX5945 pins from the respective switch (S1–S5).When using the header signals, caution should be exercised since the DGND and GND are shorted by resistor R72’s PC board shorting trace. Green LEDs near each port’s RJ-45 output jack indicate when the respective port power is turned on.A 100H z oscillator circuit that meets the IEEE 802.3af PSE power interface (PI) parameters for AC disconnect detection is provided by the MAX5945 EV kit. Five ICs make up the 100Hz oscillator circuit, which consists of U5, a programmable Dallas Semiconductor 40MH z EconOscillator/divider squarewave oscillator and a MAX7491 dual universal switched-capacitor filter, U4.Voltage reference source U6 (MAX6106) provides 2.048V for the circuit and level shifts the sine wave’s output. The MAX4599, an SPDT analog switch, and U3,an LMX358 dual-output op amp, provides support func-tions for the oscillator circuit. An external sine-wave oscillator meeting the IEEE 802.3af PSE PI parameters can be connected to the EV kit’s BNC connector (OSC_INPUT) after reconfiguring jumper JU7. The EV kit’s 100H z oscillator circuit can be shut down using jumper JU8 if an external oscillator is used or AC dis-connect detection is not required.The EV kit provides the required optical isolation for the I 2C-compliant 3-wire interface so the MAX5945 can operate as a slave device. The optically isolated inter-face connects to a PC parallel port through a MAXSMBus interface board. The MAXSMBus interface board requires a dedicated 9V power supply capable of supplying 250mA. The EV kit’s I 2C-compliant 2-wire or 3-wire interface can be reconfigured for interfacing to a stand-alone microcontroller for isolated (2-wire) or nonisolated (3-wire) serial operation. Additionally, for stand-alone microcontroller operation, the MAXSMBus interface board and 9V power supply are not required.The optical isolation consists of optocoupler U7, which provides galvanic isolation for the serial interface clock line (SCL) and serial interface input data line signals.Optocoupler U8 provides galvanic isolation for the seri-al output and data line (SDAOUT) and INT signals. The SCL and SDAOUT signals’ 3-wire serial interface are combined on the isolated 2-wire side prior to feeding logic buffer U9. The SCL_IN, SDA, INT _OUT,OPTO_GND and VCC PC board pads are used for a 2-wire isolated stand-alone operation. For nonisolated stand-alone 3-wire operation, jumper JU9 must be reconfigured and then the SCL, SDAIN, SDAOUT, INT ,DGND, and VDIG PC board pads must be connected to the microcontroller circuit. Note that VDIG is at +3.3V, which is required by the EV kit. The OPTO_GND and GND, DGND planes are isolated by the optical couplers. However, when using the EV kit in a non-isolated configuration, caution should be exercised since DGND and GND are shorted by resistor R72’s PC board shorting trace.The MAX5945 slave address is configured by four jumpers (JU1–JU4) and can be configured from 0x40through 0x5F hexadecimal serial address. Global address 0x60 is accepted by the MAX5945 regardless of the jumper settings. Refer to Table 1 and the Address Inputs section in the MAX5945 data sheet for more information on setting the MAX5945 slave address.MAX5945 Evaluation Kit/Evaluation System6_______________________________________________________________________________________Evaluate: MAX5945MAX5945 Evaluation Kit/Evaluation System_______________________________________________________________________________________7*Global address calls.E v a l u a t e : M A X 5945MAX5945 Evaluation Kit/Evaluation System 8_______________________________________________________________________________________Jumper SelectionThe MAX5945 EV kit features several jumpers to recon-figure the EV kit for various PSE configurations and PD requirements. Additionally, jumpers and PC board pads are provided for connecting an external micro-controller.MAX5945 I 2C-Compatible 2-Wire or 3-Wire SlaveAddress SelectionThe MAX5945 EV kit features several 3-pin jumpers (JU1–JU4) to set the slave address of the MAX5945least significant bits (LSB) of the slave address on the I 2C-compatible 2-wire or 3-wire interface. The three most significant bits are set by the MAX5945 to 010.The EV kit’s software automatically sets the LSB for the proper read/write command. Table 1 lists the jumper addressing options.Midspan/Signal-Mode SelectionThe MAX5945 EV kit features a 3-pin jumper (JU5) to set the MAX5945 in midspan or signal mode. Table 2lists the jumper options for the two modes used to detect a valid PD connected to the PSE respective Ethernet network output port. Refer to the MAX5945data sheet for more information on the modes.Operational Modes (Automatic, Shutdown)The MAX5945 EV kit features a 3-pin jumper JU6 to set the MAX5945’s initial startup operational mode. After startup, data sent to the mode register (0x12) reconfig-ure the operational mode of the MAX5945. Table 3 lists the jumper options.AC Disconnect Monitoring Oscillator InputThe MAX5945 EV kit features a 3-pin jumper (JU7) to configure the MAX5945’s oscillator input at the OSC_IN pin. The oscillator is used for AC disconnect monitoring of the PD. Table 4 lists the jumper options for the three oscillator configurations available on the EV kit.Evaluate: MAX5945MAX5945 Evaluation Kit/Evaluation System_______________________________________________________________________________________9100Hz Oscillator ShutdownThe MAX5945 EV kit features a jumper to set the EV kit’s on-board 100H z oscillator modes of operation.Table 5 lists the selectable jumper options to configure the 100Hz oscillator.Stand-Alone Microcontroller Interface(Isolated/Nonisolated)The MAX5945 EV kit features PC board pads and a jumper to interface directly with a microcontroller. The 2 x 5-pin jumper JU9 has shorting connections on the bottom layer that must be cut open to disable the opti-cal coupler interface for nonisolated evaluation. The jumper shorting connections must be in place for evalu-ating an isolated stand-alone microcontroller interface.Table 6 lists the selectable jumper options.MAX5945 PORT DET_, OUT_, GATE_, and SENSE_Pins Signal MeasurementsThe MAX5945 EV kit features jumpers to facilitate cur-rent and voltage measuring at each port’s respective DET_, OUT_, GATE_, and SENSE_ pins on the MAX5945 IC. Several 2 x 3-pin and 2-pin jumpers are used to obtain the desired measurement for each port.Jumpers JU11 and JU23 are provided for port 1,jumpers JU12 and JU24 are provided for port 2,jumpers JU13 and JU25 are provided for port 3, and jumpers JU14 and JU26 are provided for port 4. The jumper pins are shorted by a PC board trace on the bottom layer of the EV kit by default for normal opera-tion. The shorts can be cut open for measurements.See Figure 3, the controller circuit schematic for a spe-cific ports jumper.AC Disconnect Operation (Rectifier Diodes D1–D4)The MAX5945 EV kit features jumpers JU15–JU18 to bypass each port’s respective AC disconnect rectifier diode (D1–D4), thus reducing diode power dissipation when AC disconnect is not required. Jumpers JU15–JU18 are used to bypass the respective port’s rec-tifier diode. Table 7 lists the selectable jumper options for each port.E v a l u a t e : M A X 5945MAX5945 Evaluation Kit/Evaluation System 10______________________________________________________________________________________The MAX5945 EV kit features jumpers JU19–JU22 to bypass the AC detection RC network when AC load dis-connect detection is not needed. The inclusion of this RC network does not affect other circuit parameters. Table 8lists the selectable jumper options to reconfigure each port’s AC detection network. See Table 7 above for bypassing the respective port’s AC disconnect diode.The MAX5945 EV kit includes jumpers JU27–JU30 to disconnect each port’s -48V power independently for connection to an external network interface circuit.Additionally, the respective jumper’s pins can be utilized to measure the voltage or current for the respective port.Table 9 lists the specific jumper for each port. Each jumper is shorted on the bottom layer of the PC board.*See the Bypassing AC Disconnect and the DGND-to-GND Connection (Resistor R72) section.SHDN and RESET Signals The MAX5945 EV kit features four pushbutton switches (S1, S2, S3, S4) to independently shut down each channel’s respective power circuit. A reset pushbutton (S5) is also provided to reset the MAX5945.Header J2 (6-pin 0.100in center header) is available for monitoring the SHDN1, SHDN2, SHDN3, SHDN4, and RESET signals routed to the MAX5945 pins. Digital ground is provided at the header on pin 6. See Table 10, which lists the specific switch and header pin sig-nals that can be interfaced with a ribbon cable or test leads. These signals are not isolated and are refer-enced to DGND on the EV kit.Bypassing AC Disconnect and the DGND-to-GNDConnection (Resistor R72) The AC disconnect detection function requires that the EV kit’s DGND be connected directly to the GND. If the AC disconnect detection function is not required, the PC board trace shorting DGND-to-GND at resistor R72 pads can be cut open. Cutting open the PC board shorting trace at resistor R72 allows DGND to be refer-enced to a voltage potential anywhere from V EE to (V EE + 60V). Additionally, when the PC board trace at R72 is cut open, the appropriate AC detection jumper tables must be set and the OSC_IN pin on the MAX5945 must be floating by removing jumper JU7. See Tables 4, 7, and 8 for the appropriate jumper settings to bypass the AC detection function.Refer to the AC Disconnect M onitoring Oscillator Input sec-tion in the MAX5945 data sheet for additional informa-tion. If the AC disconnect detection function is required again, install a 0Ω±5% 1206 case size surface-mount resistor at R72 pads and set the appropriate jumpers. Detailed Description of Software (Words in bold are user-selectable features in the soft-ware).Software Startup A mouse or the tab key is used to navigate various items on the Main Window. Upon starting the program, the MAX5945 EV kit software starts in the Auto Read state.The software automatically detects the Slave Addressand begins reading the contents of each register in theMAX5945. The register’s contents are placed on the appropriate line of the Register Read tables in binaryand hexadecimal format. If data changes between thenext register read, the updated register hexadecimaldata is displayed in red and blinks four times. The blinkrate can be changed in the View|Red Hex Data BlinkRate menu. The left status bar at the bottom of the main window provides the MAXSMBus interface board status.The center status bar provides the current EV kit and macro engine status.Autoread/Run Macro State ControlsWhen the Auto Read checkbox is checked, the pro-gram continuously updates the main window registersand is operating in the autoread state. In the autoread state, data can be written to the MAX5945 by enteringor selecting the desired data in the Register Addressand Hexadecimal or Binary Data combo boxes. Selecting the Write Byte button writes the combo boxdata to the MAX5945. To perform an immediate register read, enter, or choose the desired Register Address,and choose the Read Byte button. H exadecimal or binary data may be entered into the Hexadecimal or Binary Data combo boxes and then the alternate combo box displays the corresponding number in the respective number base.If the Auto Read check box is unchecked, the pro-gram’s main window displays register data from the last read. To obtain current data, a Read Byte must be per-formed after selecting the appropriate register addressfrom the Register Address combo box. The autoreadstate does not read the clear on read (COR) registers.A macro can be run after loading the file from theFile|Open Macro menu. The opened macro is dis-played in the upper half of the Macro edit box and hasan smb file extension. Selecting the Run button runsthe macro to completion and displays the output in the Macro Script Output edit box field. Each edit box canbe sized relative to the other half using the splitter bar above the Script Output text. Selecting the SingleStep button instead of the Run button causes the macro to execute a single line with each activation ofthe Single Step button. The Reset button is used toreset the macro script engine and clear the MacroScript Output edit box field. A macro can be run regardless of the Auto Read checkbox status. A macrocan be run immediately after opening by using theFile|Open/Run Macro menu, selecting the desired macro to run, and clicking on the Open button. Selectingthe Cancel button exits this feature.Evaluate: MAX5945E v a l u a t e : M A X 5945The Locate Slave button is used to search for a MAX5945 located on the I 2C-compliant 2-wire serial interface whose address has been changed while the software was running. The valid MAX5945 slave address range is 0x40 through 0x5F. The MAX5945does respond to global address 0x60, although the EV kit hardware cannot be set to this specific address.Record Macro State ControlsWhen the Record checkbox is checked, the program automatically enters the record macro state and dis-ables certain buttons and menus. Choosing the Commands|Clear Script Input menu clears any script presently in the Macro script input edit box ment lines in a macro script begin with a # / ; ‘ *character. A line of script is entered by choosing the appropriate Slave Address , Register Address and entering the desired Hexadecimal Data or Binary Data in the combo boxes. Then selecting the Write Byte orRead Byte button enters the script into the Macro input edit box field. For time delays in a macro, choose the desired delay time from the combo box on the right side of the Delay button and then select the Delay but-ton. The macro must be saved before exiting the record macro state, using the File|Save Macro menu. The macro file must have an smb file extension name.To edit a previously saved macro, open the macro using the File|Open Macro menu and make the desired edits. The modified file must be saved prior to exiting the record macro state. Uncheck the Record checkbox to exit the record macro state. Additionally, a macro can be created or edited using a plain text edi-tor in “Text Mode.” The file must be saved with an smb extension.Figure 1. The MAX5945 Evaluation Software’s Main Window for Controlling the Software State, Configuring the MAX5945 RegistersUsing the Macro Engine and Displaying All the Registers In Binary and Hexadecimal Format。

MAX3795EVKIT 用户手册说明书

__________________________________________Maxim Integrated Products1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at .Evaluat es: MAX3795MAX3795 Evaluat ion K it_______________General Desc ript ion The MAX3795 evaluation kit (EV kit) is an assembled demonstration board that provides complete optical and electrical evaluation of the MAX3795 VCSEL driver.The output of the EV kit is interfaced to an SMA connector that can be connected to a 50W terminated oscilloscope. A site for a common cathode VCSEL is provided to allow optical testing._________________________Feat uresFully Assembled and TestedSingle +3.3V Power Supply Operation_______________Ordering Inform at ion PART TEMP RANGE IC-PACKAGE MAX3795EVKIT-40°C to +85°C 24 Thin QFN______________________________________________________________ Com ponent List DESIGNATION QTY DESCRIPTIONC1, C2, C4-C9,C11-C13, C15-C17140.01m F 10% ceramiccapacitor (0402)C310.047m F 10% ceramic capacitor (0402)C101OPENC14110m F ceramic capacitor (0805)C18110m F 10% tantalum capacitor, case BC19, C202OPEN*D11VCSEL laser and photodiode*D21LED, red T1 packageJ1-J77SMA connectors, tab contact, Johnson 142-0701-851JU1-JU7, JU10,JU12-JU13112-pin header, 0.1in centers JU1413-pin header, 0.1in centers None12ShuntsL1-L33Ferrite Bead, Murata BLM18HD102SN1 (0603)L411.2m H inductor (1008LS) Coilcraft 1008CS-122XKBCQ1, Q22NPN transistor (SOT23)Zetex FMMT491A*These components are not supplied but can bepopulated if the user wants to test a VCSEL.DESIGNATION QTY DESCRIPTIONR1, R15250k W variable resistorBourns 3296WR2110k W variable resistorBourns 3296WR14120k W variable resistorBourns 3296WR161500k W variable resistorBourns 3296WR31402W 1% resistor (0402)R41 2.49k W 1% resistor (0402)R5, R122499W 1% resistor (0402R6, R13, R28310.0k W 1% resistor (0402)R7, R102OPEN*R81 4.75k W 1% resistor (0402)R9, R11249.9W 1% resistor (0402)R26110W 1% resistor (0402)R271 1.0k W 1% resistor (0402)R341 1.0k W 1% resistor (0402)R35115k W 1% resistor (0402)R361 1.69k W 1% resistor (0402)R51, R53, R56-574806W 1% resistor (0402)TP1-TP3, TP5TP6-9, TP11-12,TP13-15, TP20-2115Test PointU11MAX3795ETG (24 QFN)U21MAX495 (8 SO)19-0031; Rev 0, 11/04MAX3795 Evaluat ion K it2_________________________________________________________________________________________E v a l u a t e s : M A X 3795__________________Com ponent Suppliers Note: Please indicate that you are using the MAX3795 when contacting these component suppliers.________________________Quic k St artElec t ric al Eval uat i onIn the electrical configuration, an automatic power control (APC) test circuit is included to emulate a semiconductor laser with a monitor photodiode.Monitor diode current is provided by transistor Q1,which is controlled by an operational amplifier (U2).The APC test circuit, consisting of U2 and Q1, applies the simulated monitor diode current to the MD pin of the MAX3795. To ensure proper operation in theelectrical configuration, set up the evaluation board as follows:1) Place shunts on JU4, JU5, JU6, JU7, JU10,JU13 and JU14 (Refer to Table 1 for details).2) Remove shunts JU1 and JU2 (Refer to table 1for detail).3) To enable the outputs, connect TX_DISABLEto GND by placing a shunt on JU3.Note: When performing the followingresistance checks auto ranging DMMS may forward bias the on-chip ESD protection and cause inaccurate measurements. To avoid this manually set the DMM to a high range.4) Adjust R15, the R BIASSET potentiometer, for2.5k W resistance between TP14 (BIASSET)and ground.5) Adjust R1, the R PWRSET potentiometer, for10k W resistance between TP2 (REF) and TP12 (MD).6) Remove JU12 or Adjust R14, the R PEAKSETpotentiometer, for 20k W resistance between TP15 (PEAKSET) and ground, to disable peaking.7) Adjust R16, the R TC potentiometer, for 0Wresistance between TP7 (TC1) and TP8(TC2), to disable temperature compensation.8) Adjust R2, the R MODSET potentiometer, for10k W resistance between TP9 (MODSET)and ground.9) Apply a differential input signal (250mV P-P to2400mV P-P ) between SMA connectors J5 and J7 (IN+ and IN-).10) Attach a high-speed oscilloscope with a 50Winput to the SMA connector J6 (OUT).11) Connect a +3.3V supply between TP20 (V CC )and TP21 (GND). Set the current limit to about 200mA. Adjust the power supply until the voltage between TP11 and ground is +3.3V.12) Adjust R1 (R PWRSET ) until desired laser biascurrent is achieved.W=9.49V I 5JU BIAS 13) The MD and BIAS currents can be monitoredat TP1 (V PWRMON ) and TP3 (V BIASMON ) using the equations below:PWRSETPWRMON MD R 2V I *=W*=402V 9I BIASMONBIAS Note: If the voltage at TP1 exceeds V PMTH (typical 0.8V) or TP3 exceeds V BMTH (typical 0.8V), the FAULT signal will be asserted and latched.14) Adjust R2 until the desired laser modulationcurrent is achieved.W=50)V (Amplitude Signal I MOD 15) If peaking is desired, Install JU12. Adjust R14(R PEAKSET ) until the desired amount of peaking is achieved.Opt ic al Evaluat ionFor optical evaluation of the MAX3795, configure the evaluation kit as follows:1) Place shunts on JU2, JU6, JU7, JU13 andJU14 (Refer to Table 1 for details).2) Remove components L2 and C9. Remove theshunts from JU1, JU4 and JU5.SUPPLIERPHONE FAX AVX 803-946-0690803-626-3123Coilcraft 847-639-6400847-639-1469Murata 814-237-1431814-238-0490Zetex516-543-7100516-864-7630MAX3795 Evaluat ion K it___________________________________________Maxim Integrated Products 3Evaluat es: MAX37953) Install a 0W resistor at R7 to connect theanode of the VCSEL to the output.4) To enable the outputs, connect TX_DISABLEto GND by placing a shunt on JU3.5) Connect a common cathode VCSEL asshown in figure 1. Keep leads short to reduce reflection.Note: When performing the followingresistance checks auto ranging DMMS mayforward bias the on-chip ESD protection andcause inaccurate measurements. To avoidthis manually set the DMM to a high range. 6) Adjust R15, the R BIASSET potentiometer, for2.5k W resistance between TP14 (BIASSET)and ground.7) Adjust R1, the R PWRSET potentiometer, for10k W resistance between TP2 (REF) andTP12 (MD).8) Open JU12 or adjust R14, the R PEAKSETpotentiometer, for 20k W resistance betweenTP10 (PEAKSET) and ground, to disablepeaking.9) Adjust R16, the R TC potentiometer, for 0Wresistance between TP7 (TC1) and TP8(TC2), to disable temperature compensation.10) Adjust R2, the R MODSET potentiometer, for10k W resistance between TP9 (MODSET)and ground.11) Apply a differential input signal (250mV P-P to2400mV P-P) between SMA connectors J5 and J7 (IN+ and IN-).12) Attach the VCSEL fiber connector to anoptical/electrical converter.13) Connect a +3.3V supply between TP20 (V CC)and TP21 (GND). Set the current limit to200mA. Adjust the power supply until thevoltage between TP11 and ground is +3.3V.14) Adjust R1 (R PWRSET) until desired averageoptical power is achieved.15) The MD and BIAS currents can be monitoredat TP1 (V PWRMON) and TP3 (V BIASMON) usingthe equations below:PWRSETPWRMONMDR2VI*=W*=402V9I BIASMONBIASNote: If the voltage at TP1 exceeds V PMTH(typical 0.8V) or TP3 exceeds V BMTH (typical0.8V), the FAULT signal will be asserted andlatched.16) Adjust R2 (R MODSET) until the desired opticalamplitude is achieved. Optical amplitude canbe observed on an oscilloscope connected to an optical/electrical converter. VCSELovershoot and ringing may be improved byappropriate selection of R10 and C10.16) The falling edge of the optical waveform mayimprove with peaking. Install JU12 and adjust R14 (R PEAKSET) until the desired amount ofpeaking is achieved.MAX3795 Evaluat ion K it4_________________________________________________________________________________________E v a l u a t e s : M A X 3795Table 1. Adjustment and Control Descriptions (see Quick Start)COMPONENT NAME FUNCTIONJU1COMPEnables/disables the APC circuit. Remove shunt to enable APC circuit.JU2PHOTODIODE Installing a shunt will connect the photodiode of the VCSEL to the MD ed when a VCSEL is installed.JU3TX_DISABLE Enables/disables the output currents. Install a shunt to enable output currents.JU4IPD Determines the gain of the photodiode emulator. When JU4 is open the gain is 0.02 A/A. When JU4 is shunted the gain is 0.12 A/A.JU5APC_OPEN Installing a shunt connects the electrical output of the part to the emulation circuit.JU6FAULT Installing a shunt enables the external fault indicator circuit.JU7SQUELCH Installing a shunt enables the squelch function.JU10VCCEXT Installing a shunt provides power to the emulation and fault indicator circuits.D2Fault Indicator LED is illuminated when a fault condition has occurred (Refer to the Detailed Description section of the MAX3740 data sheet).R1R PWRSET Adjusts transmit optical power to be maintained by the APC loop.R2R MODSET Adjusts the laser modulation current.R14R PEAKSET Adjusts the peaking for the falling edge of the VCSEL.R15R BIASSET In closed-loop configuration it adjusts the maximum bias current available to the APC. In open-loop configuration it adjusts the bias level of the output.R16R TCAdjusts the temperature compensation of the modulation current.MAX3795 Evaluat ion K it___________________________________________Maxim Integrated Products 5Evaluat es: MAX3795Figure 1. MAX3795 EV Kit SchematicMAX3795 Evaluat ion K itMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600___________________62004 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated ProductsE v a l u a t e s : M A X 3795Figure 2. MAX3795 EV Kit PC Component PlacementGuide—Component Side Figure 3. MAX3795 EV Kit PC Board Layout—Component Side Figure 4. MAX3795 EV Kit PC Board Layout—Ground PlaneFigure 5. MAX3795 EV Kit PC Board Layout—Power PlaneFigure 6. MAX3795 EV Kit PC Board Layout—Solder Side。

MAX2740EVKIT中文资料

1
For free samples and the latest literature, visit or phone 1-800-998-8800. For small orders, phone 1-800-835-8769.
元器件交易网
12
C42
22−C31, C5, C7, C13, C15, C17, C19, C39
D1 R2 R3, R4 R5, R8 R6, R7, R9, R10 R11, R12 R13−R18 R19 R20 L1, L2, L5 L8, L9 L3 L10 L11, L12
Note: Please indicate that you are using the MAX2740 when contacting these component suppliers.
1 1 2 2 4 2 6 1 1 3 2 1 1 2
13
7
C6 C9, C12, C41, C45, C46, C47
1
6
________________________________________________________________ Maxim Integrated Products
Table 1. Recommended Test Equipment
EQUIPMENT DESCRIPTION One HP 8648C or equivalent and one HP 83712A or equivalent. These should be capable of delivering -70dBm to 0dBm of output power in the 10MHz to 2000MHz frequency range. The HP 8648C is required to test the receive signal path, and the HP 83712A is a low-phase noise source for the reference frequency. Capable of providing at least 100mA at +2.7V to +3.3V HP 8561E M/A Com Anzac 96341 For external control of VGA functions

MAX17630B EV Kit 评估板说明说明书

Evaluates: MAX176305V Output-Voltage ApplicationMAX17630BEVKIT# Evaluation KitGeneral DescriptionThe MAX17630BEVKIT# Evaluation Kit (EV kit) provides a proven design to evaluate the MAX17630B high-effi -ciency, synchronous step-down DC-DC converter. The EV kit provides 5V/1A at the output from a 6.5V to 36V input supply. The switching frequency of the EV kit is pre-set to 400kHz for optimum efficiency and component size. The EV kit features adjustable input undervoltage lock-out, adjustable soft-start, open-drain RESET signal, and external clock synchronization. The EV kit is optimized for thermal performance. For more details about the IC benefits and features, refer to MAX17630 IC data sheet.Features●Operates from a 6.5V to 36V Input Supply ●5V Output Voltage●Delivers Up to 1A Output Current ●400kHz Switching Frequency●Enable/UVLO Input, Resistor-Programmable UVLOThreshold ●Adjustable Soft-Start Time ●Open-Drain RESET Output●Overcurrent and Overtemperature Protection ●Proven PCB Layout ●Fully Assembled and Tested319-100372; Rev 0; 5/19Ordering Information appears at end of data sheet.Quick StartRecommended Equipment●MAX17630BEVKIT# Evaluation Kit ● 6.5V to 36V, 1A DC-input power supply ●Load capable of sinking 1A ●Digital voltmeter (DVM)Equipment Setup and Test ProcedureThe EV kit is fully assembled and tested. Follow the steps below to verify the board operation.Caution: Do not turn on power supply until all con-nections are completed.1) Set the power supply at a voltage between 6.5V and36V. Then, disable the power supply.2) Connect the positive terminal of the power supply tothe VIN PCB pad and the negative terminal to the nearest PGND PCB pad. Connect the positive ter-minal of the 1A load to the VOUT PCB pad and the negative terminal to the nearest PGND PCB pad.3) Connect the DVM across the VOUT PCB pad andthe nearest PGND PCB pad.4) Verify that shunts are installed across pins 1-2 onjumper JU1 (see Table 1 for details) and pins 2-3 on jumper JU2 (see Table 2 for details)5) Turn on the DC power supply.6) Enable the load.7) Verify that the DVM displays 5V.Click here for production status of specific part numbers.5V Output-Voltage ApplicationDetailed DescriptionThe EV kit is designed to deliver 5V at load current up to 1A at the output from a 6.5V to 36V input supply. The switching frequency of the EV kit is configured at 400 kHz by leaving RT resistor open.The EV kit includes an EN/UVLO PCB pad and jumper JU1 to enable the output at a desired input voltage. The MODE/SYNC PCB pad and jumper JU2 allow an external clock to synchronize the device. Jumper JU2 allows the selection of the mode of operation based on light load-performance requirements. An additional RESET PCB pad is available for monitoring whether the converter output is in regulation or not.Soft-Start Input (SS)The EV kit offers an adjustable soft-start function to limit inrush current during the startup. The soft-start time is adjusted by the value of external soft start capacitor C3, connected between SS and SGND. The selected output capacitance (C SEL ) and the output voltage (V OUT ) deter-mine the minimum value of C3, as shown by the following equation:C3 ≥ 28 x 10-6 x C SEL x V OUTThe soft-start time (t SS ) is related to the soft-start capaci-tor C3 by the following equation:()SS -6C3t 5.55 10=×For example, in order to program a 1ms soft-start time, C3 should be 5600pF.Enable/Undervoltage-Lockout (EN/UVLO) ProgrammingThe MAX17630 offers an Enable and adjustable input undervoltage lockout feature. In this EV kit, for normal operation, leave the EN/UVLO jumper (JU1) open. When JU1 is left open, the MAX17630 is enabled when the input voltage rises above 6.4V. T o disable the MAX17630, install a jumper across pins 2-3 on JU1. See T able 1 for JU1 settings. The EN/UVLO PCB pad on the EV kit supports external Enable/Disable control of the device. Leave JU1 open when external Enable/Disable control is desired. A potential divider formed by R1 and R2 sets the input voltage (VINU) above which the converter is enabled when JU1 is left open.Choose R1 to be 3.32MΩ (max), and then calculate R2 as follows:()12INU R 1.215R V 1.215×=−where, V INU is the voltage at which the device is requiredto turn on, and R1 and R2 are in kΩ.For more details about setting the undervoltage lockout level, refer to the MAX17630 data sheet.Table 1. Converter EN/UVLO Jumper (JU1) Settings*Default position.SHUNT POSITIONEN/UVLO PIN MAX17630B OUTPUT1-2Connected to VINEnabledNot installed*Connected to the center node of resistor-divider R1 and R2Enabled, UVLO level is set by the resistor-divider between VIN and SGND2-3Connected to SGNDDisabled5V Output-Voltage ApplicationMode Selection (MODE/SYNC)The EV kit provides a jumper (JU2) that allows the MAX17630 to operate in PWM, PFM, and DCM modes. Refer to the MAX17630 data sheet for more details on the modes of operation. Table 2 shows the MODE SELECTION (JU2) settings that can be used to configure the desired mode of operation.External Clock Synchronization (MODE/SYNC)The EV kit provides MODE/SYNC PCB pad to synchronize the MAX17630 to an optional external clock. Leave Jumper (JU3) open when external clock signals are applied. In the presence of a valid external clock for synchronization, the MAX17630 operates in PWM mode only. For more details about external clock synchronization, refer to the MAX17630 data sheet.Active-Low, Open-Drain Reset Output (RESET )The EV kit provides a RESET PCB pad to monitor the status of the converter. RESET goes high when VOUT rises above 95% (typ) of its nominal regulated output voltage. RESET goes low when VOUT falls below 92% (typ) of its nominal regulated voltage.Hot Plug-In and Long Input CablesThe MAX17630BEVKIT# PCB layout provides an optional electrolytic capacitor (C6 = 22μF/50V). This capacitor lim -its the peak voltage at the input of the MAX17630B when the DC input source is “Hot-Plugged” to the EV kit input terminals with long input cables. The equivalent series resistance (ESR) of the electrolytic capacitor dampens the oscillations caused by interaction of the inductance of the long input cables and the ceramic capacitors at the buck converter input.Table 2. Mode Selection Jumper (JU2) Settings*Default position.SHUNT POSITIONMODE/SYNC PIN MAX17630B OUTPUT 1-2Connected to V CC DCM mode of operation 2-3*Connected to SGNDPWM mode of operation Not installedOPENPFM mode of operation5V Output-Voltage Application(V IN = 24V, V OUT = 5V, f SW = 400kHz, unless otherwise noted.)MAX17630B EV Kit Performance Report5V/div 5V/div1ms/divtoc072V/div RESET1A/div CONDITIONS:PWM MODE, 1A LOAD5V/div5V/div 1ms/divEN/UVLOtoc082V/div RESET1A/divCONDITIONS:PWM MODE, 20mA LOAD10V/div 2µs/divOUT(AC)toc0920mV/divLX LX1A/divCONDITIONS:PWM MODE, 1A LOAD5V Output-Voltage Application(V IN = 24V, V OUT = 5V, f SW = 400kHz, unless otherwise noted.)MAX17630B EV Kit Performance Report (continued)10V/div 20µs/divtoc1150mV/divLX 0.5A/divCONDITIONS:PFM MODE, 20mA LOAD50mV/div100µs/divtoc12OUT(AC)0.5A/divCONDITIONS:PWM MODE100mV/div 100µs/divLOAD TRANSIENT RESPONSE BETWEEN 0.5A AND 1Atoc130.5A/divCONDITIONS:PWM MODEGAINto16PHASEBODE PLOT100mV/div 100µs/divLOAD TRANSIENT RESPONSE BETWEEN 20mA AND 0.5Atoc14OUT(AC)OUT0.5A/div CONDITIONS:DCM MODE100mV/div200µs/divLOAD TRANSIENT RESPONSE BETWEEN 20mA AND 0.5Atoc15OUT(AC)OUT0.5A/divCONDITIONS:PFM MODE10V/div1µs/divOUT(AC)toc1020mV/divLX LX0.2A/divCONDITIONS:DCM MODE, 20mA LOAD,5V Output-Voltage ApplicationNote: Indicate that you are using the MAX17630B when contacting these component suppliers.SUPPLIER WEBSITE Coilcraft Murata Americas Panasonic Taiyo Yuden TDK SullinsCorpPARTTYPE MAX17630BEVKIT#EVKITS.No DesignatorDescriptionQuantityManufacturer Part Number 1C1 2.2µF, 10%, 50V, X7R, Ceramic capacitor (1206)1TDK C3216X7R1H225K160AE 2C2 2.2µF, 10%, 10V, X7R, Ceramic capacitor (0603)1MURATA GRM188R71A225KE153C35600pF, 2%, 25V, COG, Ceramic capacitor (0402)1MURATA GRM1555C1H562GE014C422µF, 20%, 25V, X7R, Ceramic capacitor (1210)1MURATA GRM32ER71E226ME155C5, C100.1µF, 10%, 16V, X7R, Ceramic capacitor (0402)2TAIYO YUDEN EMK105B7104KV 6C11, C15150pF, 10%, 100V, X7R, ceramic capacitor (0402)2TDK C1005C0G2A151J050BA 7C90.1µF, 10%, 50V, X7R, Ceramic capacitor (0402)1TDK C1005X7R1H104K050BE 8C6ALUMINUM-ELECTROLYTIC; 22UF; 50V; TOL = 20%; MODEL = FK SERIES1PANASONIC EEE-TG1H220P9L1INDUCTOR, 15µH; 20%; 3.9A (5mm x 5mm)1COILCRAFT XAL5050-153ME 10R1RESISTOR, 3.32MΩ, 1% (0402)1VISHAY DALE CRCW04023M32FK 11R2RESISTOR, 787kΩ, 1% (0402)1VISHAY DALE CRCW0402787KFK 12R3, R7RESISTOR, 0Ω (0402)2PANASONIC ERJ-2GE0R0013R6RESISTOR, 10KΩ, 1% (0402)1VISHAY DALE CRCW040210K0FK14U1HIGH-EFFICIENCY; SYNCHRONOUS STEP-DOWN DC-DC CONVERTER (TQFN16-EP 3mm x 3mm)1MAX17630BATE+15JU1, JU23-pin header (36-pin header 0.1” centers)2SULLINS PEC03SAAN 16-Shunts2SULLINS STC02SYAN17C13, C14OPEN: Capacitor (1210)0N/A 18L2OPEN: Inductor (4mm x 4mm)0N/A 19C7, C8, C12, C16OPEN: Capacitor (0402)0N/A 20R4, R5, R8OPEN: Resistor ( 0402)0N/A 21FB1OPEN: Ferrite Bead (0805)N/AJU2 2 - 3 SHORTDEFAULT JUMPER TABLEJUMPER SHUNT POSITIONJU1OPEN Component SuppliersOrdering InformationMAX17630BEVKIT# EV Kit Bill of Materials5V Output-Voltage Application5V Output-Voltage ApplicationMAX17630BEVKIT# EV Kit—Top Silkscreen MAX17630BEVKIT# EV Kit—Layer 2MAX17630BEVKIT# EV Kit—Top Layer MAX17630BEVKIT# EV Kit—Layer 35V Output-Voltage ApplicationMAX17630BEVKIT# EV Kit—Bottom Layer MAX17630BEVKIT# EV Kit—Bottom SilkscreenMaxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time.5V Output-Voltage ApplicationREVISION NUMBERREVISION DATE DESCRIPTIONPAGES CHANGED5/19Initial release—Revision HistoryFor pricing, delivery, and ordering information, please visit Maxim Integrated’s online storefront at https:///en/storefront/storefront.html.。

MAX8564EVKIT_cn

_________________________________概述MAX8564 评估板(EV kit) 是经过完全组装和测试的电路板，用于对MAX8564双路线性n-FET控制器进行评估。

MAX8564电路在1.8V电压输入时，可产生最大负载电流为1.5A的1.5V输出电压；1.2V电压输入时，可产生最大负载电流为3A的1.05V输出电压。

VDD偏置电源采用5V至12V供电。

MAX8564评估板也可对MAX8563进行评估。

对MAX8563评估时，请索取免费样品。

_________________________________特性♦MAX8563：3输出♦MAX8564：2输出♦±1%反馈调节♦低至0.5V的可调输出电压♦5V至12V宽电源供电范围♦独立的使能控制和POK信号可实现排序功能♦欠压短路保护♦驱动n沟道MOSFET ♦经过完全组装和测试评估板：MAX8563/MAX8564MAX8564评估板______________________________定购信息19-3553; Rev 0; 1/05µMAX是Maxim Integrated Products, Inc.的注册商标。

本文是Maxim正式英文资料的译文，Maxim不对翻译中存在的差异或由此产生的错误负责。

请注意译文中可能存在文字组织或翻译错误，如需确认任何词语的准确性，请参考Maxim提供的英文版资料。

索取免费样品和最新版的数据资料，请访问Maxim的主页：。

评估板：M A X 8563/M A X 8564______________________________快速入门推荐设备•两个2V、4A可调节直流电源•一个5V或12V、100mA直流电源•两个数字万用表(DMM)• 1.5A负载•3A负载•电流表(可选)步骤MAX8564评估板经过完全安装与测试。

按照以下步骤验证电路板的工作情况：1)将可调节直流电源电压预置在1.8V (以后称作PS1)。

MAX471MAX472的中文资料大全

MAX471/MAX472的特点、功能美国美信公司生产的精密高端电流检测放大器是一个系列化产品，有MAX471/MAX472、MAX4172/MAX4173等。

它们均有一个电流输出端，可以用一个电阻来简单地实现以地为参考点的电流/电压的转换，并可工作在较宽电压内。

MAX471/MAX472具有如下特点：●具有完美的高端电流检测功能；●内含精密的内部检测电阻（MAX471）；●在工作温度范围内，其精度为2%；●具有双向检测指示，可监控充电和放电状态；●内部检测电阻和检测能力为3A，并联使用时还可扩大检测电流范围；●使用外部检测电阻可任意扩展检测电流范围（MAX472）；●最大电源电流为100μA；●关闭方式时的电流仅为5μA；●电压范围为3～36V；●采用8脚DIP/SO/STO三种封装形式。

MAX471/MAX472的引脚排列如图1所示，图2所示为其内部功能框图。

表1为MAX471/MAX472的引脚功能说明。

MAX471的电流增益比已预设为500μA/A，由于2kΩ的输出电阻（ROUT）可产生1V/A的转换，因此±3A时的满度值为3V.用不同的ROUT电阻可设置不同的满度电压。

但对于MAX471，其输出电压不应大于VRS+。

对于MAX472，则不能大于。

MAX471引脚图如图１所示，MAX472引脚图如图２所示。

MAX471/MAX472的引脚功能说明引脚名称功能MAX471MAX47211SHDN关闭端。

正常运用时连接到地。

当此端接高电平时，电源电流小于5μA2，3-RS+内部电流检测电阻电池（或电源端）。

“+”仅指示与SIGN输出有关的流动方向。

封装时已将2和3连在了一起-2空脚88OUT 电流输出，它正比于流过TSENSE被测电路的幅度，在MAX741中，此引脚到地之间应接一个2kΩ电阻，每一安培被测电流将产生大小等于1V的电压OUT端为电流幅度输出端，而SIGN端可用来指示输出电流的方向。

MAX2402EVKIT-SO中文资料

General DescriptionThe MAX2402 evaluation kit (EV kit) simplifies evalua-tion of the MAX2402 transmitter. The EV kit enables the testing of all MAX2402 functions with no additional sup-port circuitry and with minimal equipment.Features♦Low-Cost, Flexible Transmitter ♦More than 100mW of Output Power ♦Operates from 800MHz to 1000MHz ♦Single +5V Supply♦Easy Testing of All MAX2402 FeaturesEvaluates: MAX2402MAX2402 Evaluation Kit________________________________________________________________Maxim Integrated Products 1Component ListOrdering InformationEV KitFor pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .E v a l u a t e s : M A X 2402MAX2402 Evaluation Kit 2________________________________________________________________________________________________________________Quick StartThe MAX2402 EV kit is fully assembled and factory test-ed. Do not turn on the power until all connections are made.Test Equipment Required•Signal source, sine-wave generator with range up to 1000MHz (example: HP8656B)•Signal source, function generator with range up to 10MHz•Spectrum analyzer with range up to 4GHz (example:TEK2755AP)•Power supply capable of 5V, 300mA output with current limitConnections and Signal Conditions1)Verify that all shunts are across jumpers W1–W4.2)The LO port can be driven single-ended or differen-tially. For single-ended drive, connect an SMA cable from the 1000MHz signal source to the LO+ SMA input on the EV kit. For differential drive, install a 220pF ceramic capacitor (not provided) at site ing SMA cables, connect the signal source to the LO+ and LO- inputs through a balun with sufficient bandwidth.The EV kit was designed for single-ended or differ-ential LO drive. In your final layout, capacitors C10and C11 are not required. For single-ended LO drive applications, ground the unused LO port as close to the package as possible. For differential drive appli-cations, connect LO lines directly to LO port pins.Coupling capacitors are not required, as the LO ports are internally AC coupled.3)Connect an SMA cable from the spectrum analyzer to the OUT SMA on the EV kit.4)Connect the power supply to the appropriate V CCand GND terminals on the EV kit.5)Place a shorting termination on the MOD SMA con-nector to put the mixer in a fully on position.6)Set LO power to 0dBm and frequency to 900MHz on the signal source. Do not apply a signal to the DUT yet, if you have control of this function.7)Set the spectrum analyzer’s dynamic range for a top limit of 30dBm, and set the frequency range for an appropriate setting to view the output.8)Set the power supply to 5.0V and set the current limit to 300mA. Apply power.Analysis1)R1 is a 121Ωsurface-mount resistor on the EV kit which is parallel with the 50Ωtermination of the spectrum analyzer. This sets the load of the power amplifier at 35Ω, which is a close match to the power amplifier’s output impedance. As a result, the spec-trum analyzer will display an output power level which is 1.5dB below the actual transmitted power.As long as this resistor is on the EV kit, 1.5dB must be added to any displayed power levels to get accu-rate information.R1 can be removed, if desired, with about a 0.7dB reduction in transmitted power due to the load mis-match. The output power (with 1.5dB added to the displayed power) should be at least 20dBm. (Note:Before signal is applied to the LO port there may be a parasitic oscillation on the EV board. This is caused by parasitic feedback from the power-amplifier output to the LO port and cable. When sig-nal is applied to the LO port, this oscillation will abate.)2)The output power can be observed for the 800MHz to 1000MHz LO input range and over the prescribed input power levels. (Near 800MHz, it may be neces-sary to adjust BADJ to higher than 2.5V to maintain stability.)3)To observe the effects of the VGC voltage on output power, connect an adjustable supply to the VGC test point on the EV kit and remove the VGC jumper (W3).This supply can now be adjusted and the output power can be observed as a function of VGC volt-age. The VGC range is 0V to V CC . The output power should be at a minimum when VGC is adjusted below 0.8V. The output power should be at a maximum when VGC is adjusted above (V CC - 0.5V).4)The BADJ pin is used to control the bias level of the final stages of the PA. The adjustment range on BADJ is 0V to V CC , with 0V representing the greatest bias current and 5V the least. More bias current will result in more output power, less efficiency, and less distortion. The intended configuration for this pin is a single resistor pull-up or pull-down to V CC or GND,respectively. The value of this resistor will determine the bias voltage at the BADJ pin. See Table 1 in the MAX2402 data sheet for a guide to resistor use at the BADJ input.The MAX2402 BADJ input is self biasing to about V CC /2 and can be left open. At low BADJ voltage settings and lower frequencies within the 800MHz to 1000MHz range, the power-supply current may increase unacceptably or the circuit may oscillate.At these lower frequencies, more than 20dBm of power can easily be obtained with BADJ set at 3V or above (see the BADJ Input section of the MAX2402 data sheet).Removing the V CC jumper (W1) on the EV kit will connect BADJ to GND, while removing the GND jumper (W2) will connect BADJ to V CC. Removing both will cause BADJ to rely on its internal bias.5)The MAX2402 SHDN pin connects to V CC through ajumper and 100Ω. To test the shutdown function, ensure that either W1 or W2 is removed, which will prevent current draw through R6, R7, and R8. When the SHDN jumper is removed and the SHDN test point is grounded, the supply current should drop below 1µA.6)The modulated spectrum can be examined on thespectrum analyzer by removing the shorting termina-tion and supplying a modulation signal to the SMA MOD input. The MOD input is linear from approxi-mately 1.5V to 3.5V, and has a bandwidth of DC to 25MHz. The MOD input is self-biasing to approxi-mately V CC/2. Any offset at the MOD input from a symmetric signal around the self-bias voltage will act as an offset and cause less than optimal carrier rejection. Capacitive coupling into the MOD input will eliminate this situation and result in optimum car-rier rejection. The MOD input will act as an attenua-tor if it is left open.Adjustments and ControlVGC The VGC jumper (W3) shorts the VGC input of the MAX2402 to V CC. The VGC test point can be used to manipulate the gain control voltage. The VGC jumper (W3) should be removed before trying to control this VGC voltage. It connects to V CC when in place.S H D N The SHDN jumper (W4) shorts the SHDN input to V CCto keep the part in normal operating condition. TheSHDN test point can be used with a controlling voltageto power down the MAX2402. The SHDN jumper (W4)should be removed when adjusting the voltage on thetest pin. It connects to V CC when in place.BADJ The two bias adjust jumpers connect either end of the1kΩpotentiometer to V CC and GND through 50Ωresis-tors. The wiper on the potentiometer has been factoryadjusted to provide 2.5V to the BADJ input on theMAX2402. The BADJ test point is for monitoring theBADJ voltage. The BADJ jumpers (W1, W2) connect R8to V CC and GND, respectively. BADJ voltage is alteredby adjusting the R8 potentiometer.Layout Considerations The evaluation board can serve as a guide for boardlayout. C3, C4, and C5 should be small surface-mountcapacitors, placed directly from each V CC pin to theadjacent ground. Place them as close to the MAX2402as possible, and make connections directly to the pins(not through vias or long traces). C6, C7, and C8 shouldalso be surface mount. C7 should be next to C3. C8 andC9 should be located at the V CC terminal of choke L2. Ifthe LO is driven single-ended, ground the unused LOport. If a single resistor is used to bias BADJ, it may benecessary to AC couple BADJ to ground with a low-value capacitor, since the high-impedance at the BADJnode may be sensitive to circuit noise. Although the eval-uation board uses four layers, it is possible to use two.Evaluates: MAX2402 MAX2402 Evaluation Kit_______________________________________________________________________________________3E v a l u a t e s : M A X 2402MAX2402 Evaluation Kit 4_______________________________________________________________________________________Figure 1. MAX2402 EV Kit SchematicEvaluates: MAX2402MAX2402 Evaluation Kit_______________________________________________________________________________________5Figure 2. MAX2402 EV Kit Component Placement Guide—Component SideFigure 3. MAX2402 EV Kit PC Board Layout—Component SideFigure 4. MAX2402 EV Kit PC Board Layout—Solder SideNote: Ground layers 2 and 3 not shown.Maxim cannot assume responsibility for use of any circuitry oth er th an circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.6___________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600©1996 Maxim Integrated ProductsPrinted USAis a registered trademark of Maxim Integrated Products.E v a l u a t e s : M A X 2402MAX2402 Evaluation Kit。

MAX3787EVKIT资料

________________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at .Evaluates: MAX3787MAX3787 Evaluation Kit_______________General DescriptionThe MAX3787 evaluation kit (EV kit) is an assembleddemonstration board that provides easy evaluation of theMAX3787 1Gbps to 12.5Gbps passive equalizer forbackplanes and cables. SMA connectors with 50Ωcontrolled-impedance transmission lines to the MAX3787are provided for input and output ports to facilitateconnection to high-speed test equipment.____________________Component ListDESIGNATION QTY DESCRIPTIONJ1–J8 8 SMA connectors, edge mount, tab contactEF Johnson 142-0701-851U1 1 MAX3787ABL 4 UCSPNone 1 MAX3787 EV kit circuit board, Rev A_____________Component Suppliers SUPPLIER PHONE FAXEF Johnson 507-833-8822 507-833-8256 Note: Please indicate that you are using the MAX3787 when ordering from these suppliers. ___________________________Features ♦Fully Assembled and Tested♦SMA Connectors for Inputs and Outputs♦Calibration Test Strip♦No Power Supply Required______________Ordering Information PART TEMP RANGE IC PACKAGEMAX3787EVKIT -40°C to +125°C 4 UCSP-4________________________Quick Start Caution:The MAX3787 is a DC-coupled evaluation board. Use DC-blocks when the MAX3787 is placed between test equipment and any circuit with a supply-referenced input or output.1) Set the pattern generator to 8.5Gbps with a 27-1PRBS pattern. Set the data output amplitude to 1Vp-p differential.2) Connect the pattern generator data outputs to theinputs of an 18in FR4 board or 5m cable.3) Connect the FR4 board or cable outputs to theMAX3787 EV kit inputs (IN+, IN-).4) Connect the MAX3787 EV kit outputs (OUT+,OUT-) to an oscilloscope with 50Ωinput terminations.19-0395; Rev 0; 7/05MAX3787 Evaluation Kit2_________________________________________________________________________________________E v a l u a t e s : M A X 3787Figure 1. MAX3787 EV Kit SchematicMAX3787 Evaluation Kit_________________________________________________________________________________________ 3Evaluates: MAX3787Figure 2. MAX3787 EV Kit Component Placement Guide—Component SideFigure 3. MAX3787 EV Kit PC Board Layout—Component SideMAX3787 Evaluation Kit4_________________________________________________________________________________________E v a l u a t e s : M A X 3787Figure 4. MAX3787 EV Kit PC Board Layout—Ground PlaneFigure 5. MAX3787 EV Kit PC Board Layout—Power PlaneMAX3787 Evaluation KitMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 5© 2005 Maxim Integrated Products Printed USAis a registered trademark of Maxim Integrated ProductsEvaluates: MAX3787Figure 6. MAX3787 EV Kit PC Board Layout—Solder Side。

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_________________________________________________________________Maxim Integrated Products 1For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at .Evaluate: MAX3872/MAX3874MAX3872/MAX3874 Evaluation Kits________________General DescriptionThe MAX3872/MAX3874 evaluation kits (EV kits) simplify evaluation of the MAX3872 and MAX3874 clock and data recovery with limiting amplifier ICs. These EV kits enable testing of all MAX3872 and MAX3874 functions. SMA connectors are provided for the differential inputs and outputs. All high-speed inputs and outputs have on-board AC-coupling capacitors to allow direct connection to 50Ωtest equipment.____________________________Features♦ SMA Connectors for All High-Speed I/Os ♦ Operational Mode Select Pins ♦ Loss-of-Lock LED♦ Single +3.3V Power-Supply Operation ♦ Fully Assembled and Tested______________Ordering InformationPART TEMP. RANGE IC PACKAGE MAX3872EVKIT -40°C to +85°C 32 QFN MAX3874EVKIT -40°C to +85°C 32 QFN______________Component SuppliersSUPPLIERPHONE FAX AVX 843-448-9411843-626-3123Coilcraft 847-639-6400847-639-1469Digi-Key 800-344-4539218-681-3380EF Johnson 402-474-4800402-474-4858Murata770-436-1300770-436-3030Note: Please indicate that you are using theMAX3872/MAX3874 when ordering from these suppliers.______________________________________________________________Component ListDESIGNATION QTY DESCRIPTIONC1–C7, C17–C19, C22, C24,C26, C28140.1µF ±10% ceramic capacitors (0402)Murata GRM36X7R104K016AC8–C1360.001µF ±10% ceramic capacitors (0402)Murata GRM36X7R102K016A C14133µF ±10% tantalum capacitorAVX TAJB336K016C1512.2µF ±10% tantalum capacitorAVX TAJB225K0160.82µF ceramic capacitor (0603) (MAX3872EVKIT)C1610.068µF ceramic capacitor (0402) (MAX3874EVKIT)D11Red LED D21Not installed R2–R54Not installed R61910Ω ±5% resistor (0402)R71Not installedR8150k Ω variable resistorBOURNS 3296W-203R91Not installedL1–L3356nH inductors (0805)Coilcraft CS-560XKBCDESIGNATION QTY DESCRIPTIONJ1–J8, J25, J2610SMA connectors(edge-mount, round-pin)EF JOHNSON 142-0701-851J9, J12–J15,J17–J1983-pin headers (0.1in centers)J1012-pin headers (0.1in centers)J11, J16, J22,J234Not installed J20, J212Test pointsDigi-Key 5000K-ND J241Not installed J9, J10, J12–J15, J17–J199ShuntsMAX3872EGJ, 32-pin QFN (MAX3872EVKIT)U11MAX3874EGJ, 32-pin QFN (MAX3874EVKIT)None 1MAX3872/MAX3874 EV kit circuit board, Rev C MAX3872 datasheet (MAX3872EVKIT)None 1MAX3874 datasheet (MAX3874EVKIT)19-2767; Rev 0, 2/03MAX3872/MAX3874 Evaluation Kits 2________________________________________________________________________________________E v a l u a t e : M A X 3872/M A X 3874_______________Detailed DescriptionThe MAX3872/MAX3874 EV Kit is a fully assembled and factory tested demonstration board that enables testing of all MAX3872 and MAX3874 functions.Test Equipment Required• +3.3V power supply with 200mA current capability • Signal-source, 2.7Gbps minimum capability • Jitter analyzer capable of 2.7Gbps performance •Oscilloscope with at least 3GHz performanceTest Equipment InterfaceThe serial inputs (SDI±, SLBI±) and serial outputs (SDO±, SCLKO±) have on-board AC-coupling capacitors to allow direct connection to 50Ω test equipment. The EV kit also has pads on the serial data and clock outputs (SDO±, SCLKO±) to allow on-board termination for coupling to high-impedance oscilloscopes.Quick Start (MAX3872 & MAX3874)This procedure will set up the evaluation board for 2.48832Gbps normal operation mode, with input threshold adjust disabled.1) Place a shunt across pins 2 (SIS) and 3 (GND) ofJ13.2) Place a shunt across pins 1 (VCC) and 2 (LREF)of J14.3) Place a shunt across pins 2 and 3 of J15.4) Place a shunt across pins 2 (RS1) and 3 (GND) ofJ17.5) Place a shunt across pins 2 (RS2) and 3 (GND) ofJ18.6) Place a shunt across pins 2 (RATESET) and 3(GND) of J19.7) Place a shunt across pins 1 (VCC) and 2 (VCTRL)of J9.8) Remove the shunt from J10.9) Place a shunt across pins 2 (FREFSET) and 3(GND) of J12.10) Connect a 2.48832Gbps PRBS NRZ signal to theserial data inputs (SDI±) with 50Ω cables. Leave the SLBI ± inputs unconnected.11) Connect the serial data and clock outputs (SDO±,SCLKO±) to a 50Ω high-speed oscilloscope.Terminate any unused outputs with 50Ω to GND.12) Connect +3.3V to J20 (VCC) and ground to J21(GND).Jitter analysis and product performance can also be observed by appropriately interfacing the EV kit with a bit-error-rate tester (BERT) and a jitter analyzer.Operational ModesThe MAX3872/MAX3874 has three modes of operation: normal, system loopback, and clock holdover. The three operational modes are programmed by connecting the appropriate pins of JU13 (SIS) and JU14 (LREF). See Table 1. Normal operation mode requires a serial data stream at the SDI ± inputs, system loopback mode requires a serial data stream at the SLBI ± inputs, and clock holdover mode requires a reference clock signal at the SLBI ±inputs.Normal and System Normal and System Loopback Settings Loopback SettingsThree jumpers (RS1, RS2, RATESET) are available for setting the SDI ± or SLBI ± inputs to receive the appropriate data rate (Table 2). The FREFSET pin can be set high or low while in normal or system loopback mode.Clock Frequencies in Holdover ModeSet the incoming reference clock frequency and outgoing serial clock frequency by setting RS1, RS2,RATESET, and FREFSET appropriately. See Table 3.Auto Switch to Clock Holdover ModeTo switch from normal mode to clock holdover mode automatically when there are no data transitions applied to the SDI ± inputs connect LOL directly to LREF by placing a shunt across pins 1 and 2 of J15.Vertical Threshold AdjustmentTo compensate for optical noise presented on the data logic high caused by EDFAs in a WDM transmission system, an external analog control input is provided for adjusting the data decision threshold to an optimum level.To enable data decision threshold adjustment, place a shunt across pins 2 and 3 of J9 and shunt pins 1 and 2of J10. Set the decision threshold by adjusting the potentiometer R8. The center point for the decision threshold is 1.2V at the VCTRL pin.Jumpers, Controls, Test PointsTable 4 summarises the functions of all jumpers,controls, and test points of the MAX3872/MAX3874 EV Kit.MAX3872/MAX3874 Evaluation Kits_________________________________________________________________________________________ 3Evaluate: MAX3872/MAX3874Table 1. Operational Mode SettingsTable 2. Data Rate SettingsSHUNT POSITIONS INPUT DATA RATERS1RS2RATESET 2.666Gbps 2 and 3 2 and 3 1 and 2 2.488Gbps/2.5Gbps 2 and 3 2 and 3 2 and 3 1.244Gbps/1.25Gbps* 1 and 2 1 and 2 2 and 3 666.51Mbps* 2 and 3 1 and 2 1 and 2 622.08Mbps* 2 and 3 1 and 2 2 and 3 166.63Mbps* 1 and 2 2 and 3 1 and 2 155.52Mbps* 1 and 2 2 and 3 2 and 3 *Setting not available on the MAX3874Table 3. Clock Holdover Frequency SettingsSHUNT POSITIONS REFERENCE CLOCK FREQUENCY SCLKO FREQUENCYRS1RS2RATESET FREFSET 666.51MHz 2.666GHz 2 and 3 2 and 3 1 and 2 2 and 3 666.51MHz*666.51MHz 2 and 3 1 and 2 1 and 2 2 and 3 666.51MHz*166.63MHz 1 and 2 2 and 3 1 and 2 2 and 3 622.08MHz/625MHz* 1.244GHz/1.25GHz 1 and 2 1 and 2 2 and 3 2 and 3 622.08MHz/625MHz 2.488GHz/2.5GHz 2 and 3 2 and 3 2 and 3 2 and 3 622.08MHz*622.08MHz 2 and 3 1 and 2 2 and 3 2 and 3 622.08MHz*155.52MHz 1 and 2 2 and 3 2 and 3 2 and 3 166.63MHz 2.666GHz 2 and 3 2 and 3 1 and 2 1 and 2 166.63MHz*666.51MHz 2 and 3 1 and 2 1 and 2 1 and 2 166.63MHz*166.63MHz 1 and 2 2 and 3 1 and 2 1 and 2 155.52MHz/156.25MHz* 1.244GHz/1.25GHz 1 and 2 1 and 2 2 and 3 1 and 2 155.52MHz/156.25MHz 2.488GHz/2.5GHz 2 and 3 2 and 3 2 and 3 1 and 2 155.52MHz*622.08MHz 2 and 3 1 and 2 2 and 3 1 and 2 155.52MHz*155.52MHz 1 and 2 2 and 3 2 and 3 1 and 2 *Setting not available on the MAX3874MAX3872/MAX3874 Evaluation Kits 4________________________________________________________________________________________E v a l u a t e : M A X 3872/M A X 3874Table 4. Jumpers, Controls, Test PointsMAX3872/MAX3874 Evaluation Kits_________________________________________________________________________________________ 5Evaluate: MAX3872/MAX3874Figure 1. MAX3872 EV Kit SchematicMAX3872/MAX3874 Evaluation Kits6________________________________________________________________________________________E v a l u a t e : M A X 3872/M A X 3874Figure 2. MAX3874 EV Kit SchematicMAX3872/MAX3874 Evaluation Kits_________________________________________________________________________________________ 7Evaluate: MAX3872/MAX3874Figure 3. MAX3872/MAX3874 EV Kit ComponentPlacement Guide—Component SideFigure 4. MAX3872/MAX3874 EV Kit PC Board Layout— Figure 5. MAX3872/MAX3874 EV Kit PC Board Layout—Component Side Ground PlaneMAX3872/MAX3874 Evaluation KitsMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.8 ___________________ Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-76002003 Maxim Integrated Products Printed USAis a registered trademark of Maxim Integrated Products.E v a l u a t e : M A X 3872/M A X 3874Figure 6. MAX3872/MAX3874 EV Kit PC Board Layout— Figure 7. MAX3872/MAX3874 EV Kit PC Board Layout—Power Plane Solder Side。