MAX4173HESA中文资料
MAX471MAX472的中文资料大全
M A X471M A X472的中文资料大全(总4页)-本页仅作为预览文档封面，使用时请删除本页-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/MA X472、 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-3RG1增益电阻端。
通过增益设置电阻连接到电流检测电阻的电池端44GND地或电池负端55SIGN集电极开路逻辑输出端。
基于max4172的电流检测电路设计与实现
基于max4172的电流检测电路设计与实现
《基于MAX4172的电流检测电路设计与实现》
电流检测是电子设备中常见的功能之一，它能够实时监测电路中的电流变化并提供反馈，以便及时调整电路工作状态。
基于MAX4172的电流检测电路是一种常用的设计方案，本文将介绍如何设计并实现这样一种电路。
MAX4172是一款精密电流检测放大器，具有高精度和低功耗的特点，因此非常适合用于电流检测电路的设计。
在设计电流检测电路时，首先需要选择合适的电流检测范围，然后根据所选范围选择合适的电流检测放大器。
MAX4172可提供多种增益范围的选择，因此可以满足不同范围电流的检测需求。
设计电流检测电路时，需要考虑电路的精度、稳定性和抗干扰能力。
MAX4172具有高精度和低温漂特性，能够提供稳定的输出，并具有较强的抗干扰能力，能够满足电子设备在复杂环境下的工作要求。
此外，MAX4172还具有低功耗和小封装体积的特点，使得它在电子设备中的应用更加灵活方便。
在实现电流检测电路时，除了选择合适的电流检测放大器外，还需要考虑电路的稳定性和可靠性。
通过合理布局电路和选择优质的元器件，可以有效提高电路的稳定性和可靠性。
此外，对于需要远距离传输电流检测信号的应用场景，还可以添加适当的滤波电路和保护电路，以确保信号的完整性和安全性。
综上所述，基于MAX4172的电流检测电路设计与实现是一项关键的工作，通过选用合适的电流检测放大器、合理设计电路和加强稳定性与可靠性的控制，可以实现一个高精度、高稳定性的电流检测电路，满足不同电子设备的需求。
ams 4173标准
ams 4173标准摘要：1.AMS 4173 标准的概述2.AMS 4173 标准的主要内容3.AMS 4173 标准的应用领域4.AMS 4173 标准的重要性正文：AMS 4173 标准是由美国材料和试验协会（ASTM）制定的一种标准，全称为“Standard Specification for Tungsten and Tungsten Alloy Bars and Wires”，即“钨和钨合金棒和线材的标准规格”。
这个标准主要规定了钨和钨合金棒和线材的尺寸、形状、允许偏差、表面光洁度、机械性能、化学成分等技术要求。
AMS 4173 标准的主要内容包括：1.尺寸和形状：标准规定了钨和钨合金棒和线材的直径、长度、方形度、圆度等尺寸和形状要求。
2.允许偏差：标准规定了钨和钨合金棒和线材的壁厚、直径、长度等允许偏差。
3.表面光洁度：标准规定了钨和钨合金棒和线材的表面光洁度要求，包括表面粗糙度、光泽等。
4.机械性能：标准规定了钨和钨合金棒和线材的拉伸强度、屈服强度、硬度等机械性能要求。
5.化学成分：标准规定了钨和钨合金棒和线材的化学成分要求，包括钨、铜、银、镍等元素的含量。
AMS 4173 标准的应用领域非常广泛，主要应用于航空航天、军事、核能、电子、化工等高技术领域。
例如，钨合金棒和线材可以作为航空航天发动机的高温部件，也可以作为核能反应堆的控制棒，还可以作为电子器件的焊接材料等。
AMS 4173 标准的重要性不言而喻。
首先，这个标准为钨和钨合金棒和线材的生产和检验提供了一个统一的技术规范，保证了产品的质量和可靠性。
其次，这个标准有助于提高钨和钨合金棒和线材的生产效率和经济效益，降低了生产成本。
最后，这个标准有助于推动钨和钨合金棒和线材的技术进步和创新，促进了新材料、新工艺、新技术的发展。
MAX4173TEUT-T中文资料
Notebook Computers
Portable/Battery-Powered Systems
Smart Battery Packs/Chargers
Cell Phones
Power-Management Systems
General System/Board-Level Current Monitoring
The combination of three gain versions and a userselectable external sense resistor sets the full-scale current reading. This feature offers a high level of integration, resulting in a simple and compact currentsense solution.
+20V/V (MAX4173T) +50V/V (MAX4173F) +100V/V (MAX4173H) ♦ ±0.5% Full-Scale Accuracy ♦ ±0.3mV Input Offset Voltage (MAX4173T) ♦ 420µA Supply Current ♦ Wide 1.7MHz Bandwidth (MAX4173T) ♦ +3V to +28V Operating Supply ♦ Available in Space-Saving SOT23-6 Package
Typical Operating Circuit
0 TO +28V
VSENSE
+3V TO +28V 0.1µF
Z23S2407N中文资料(AEROVOX)中文数据手册「EasyDatasheet - 矽搜」
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Aerovox公司 ®
SuperMet & ZeMax TM 技术指标
特征
Aerovox路线SuperMet和ZEMAX
TM 电容器
•可根据金属外壳（铝合金外壳
利用最先进金属化聚丙烯薄膜技术状态.这款最新设
请求 - 请联系工厂）SuperMet
计材料结合领先设计技术,具有40多年电容经验.
咨询厂家
电气特性
应用
• 窗式空调 • 单元式空调 • 电动汽车 • 风扇与鼓风机 • Pumps • 洗衣房设备 • 除湿机 • 压缩机 •炉
• 温度范围：-40〜+ 70℃. • 电容范围3至80μF. • 电容公差±10％. • 电压范围240至440 VAC,60赫兹. • 损耗因数0.1％以下@ 60赫兹和25℃. • 绝缘电阻1000MΩ每μF.
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Aerovox公司 ®
交流电动机运行电容器
ZeMax TM - 铝合金外壳
AEROMET II - 塑料盒
美国制造
SuperMet - 金属外壳
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Aerovox公司 ®
目录
AEROMET II规格（系列M型）.......................................... .................................... 3 SuperMet & ZeMax TM 规格（系列Z型）............................................ .................. 4 部分编号系统.............................................................................................................五 AEROMET II评分表（单台容量）系列M型....................................... ........... 6 AEROMET II评分表（双功能）系列型号M ....................................... ............. 8 SuperMet评分表（单台容量）系列Z型........................................ ............... 9 SuperMet评分表（双容量）系列Z型........................................ .............. 11 ZeMax TM 评分表（单台容量）系列Z型......................................... ........... 13 AEROMET II机械尺寸.............................................. .......................................... 15 SuperMet机械尺寸............................................... ........................................... 16 ZeMax TM 机械Dimensions............................................................................................17 附件 - 安装硬件.............................................. ............................................ 18
17431资料
To all our customersRegarding the change of names mentioned in the document, such as Hitachi Electric and Hitachi XX, to Renesas Technology Corp.The semiconductor operations of Mitsubishi Electric and Hitachi were transferred to Renesas Technology Corporation on April 1st 2003. These operations include microcomputer, logic, analog and discrete devices, and memory chips other than DRAMs (flash memory, SRAMs etc.) Accordingly, although Hitachi, Hitachi, Ltd., Hitachi Semiconductors, and other Hitachi brand names are mentioned in the document, these names have in fact all been changed to Renesas Technology Corp. Thank you for your understanding. Except for our corporate trademark, logo and corporate statement, no changes whatsoever have been made to the contents of the document, and these changes do not constitute any alteration to the contents of the document itself.Renesas Technology Home Page: Renesas Technology Corp.Customer Support Dept.April 1, 2003CautionsKeep safety first in your circuit designs!1. Renesas Technology Corporation puts the maximum effort into making semiconductor products betterand more reliable, but there is always the possibility that trouble may occur with them. Trouble with semiconductors may lead to personal injury, fire or property damage.Remember to give due consideration to safety when making your circuit designs, with appropriate measures such as (i) placement of substitutive, auxiliary circuits, (ii) use of nonflammable material or (iii) prevention against any malfunction or mishap.Notes regarding these materials1. These materials are intended as a reference to assist our customers in the selection of the RenesasTechnology Corporation product best suited to the customer's application; they do not convey any license under any intellectual property rights, or any other rights, belonging to Renesas Technology Corporation or a third party.2. Renesas Technology Corporation assumes no responsibility for any damage, or infringement of anythird-party's rights, originating in the use of any product data, diagrams, charts, programs, algorithms, or circuit application examples contained in these materials.3. All information contained in these materials, including product data, diagrams, charts, programs andalgorithms represents information on products at the time of publication of these materials, and are subject to change by Renesas Technology Corporation without notice due to product improvements or other reasons. It is therefore recommended that customers contact Renesas Technology Corporation or an authorized Renesas Technology Corporation product distributor for the latest product information before purchasing a product listed herein.The information described here may contain technical inaccuracies or typographical errors.Renesas Technology Corporation assumes no responsibility for any damage, liability, or other loss rising from these inaccuracies or errors.Please also pay attention to information published by Renesas Technology Corporation by various means, including the Renesas Technology Corporation Semiconductor home page().4. When using any or all of the information contained in these materials, including product data, diagrams,charts, programs, and algorithms, please be sure to evaluate all information as a total system before making a final decision on the applicability of the information and products. Renesas Technology Corporation assumes no responsibility for any damage, liability or other loss resulting from theinformation contained herein.5. Renesas Technology Corporation semiconductors are not designed or manufactured for use in a deviceor system that is used under circumstances in which human life is potentially at stake. Please contact Renesas Technology Corporation or an authorized Renesas Technology Corporation product distributor when considering the use of a product contained herein for any specific purposes, such as apparatus or systems for transportation, vehicular, medical, aerospace, nuclear, or undersea repeater use.6. The prior written approval of Renesas Technology Corporation is necessary to reprint or reproduce inwhole or in part these materials.7. If these products or technologies are subject to the Japanese export control restrictions, they must beexported under a license from the Japanese government and cannot be imported into a country other than the approved destination.Any diversion or reexport contrary to the export control laws and regulations of Japan and/or thecountry of destination is prohibited.8. Please contact Renesas Technology Corporation for further details on these materials or the productscontained therein.HA17431 SeriesShunt RegulatorADE-204-049A (Z)Rev.1Sep. 2002 DescriptionThe HA17431 series is temperature-compensated variable shunt regulators. The main application of these products is in voltage regulators that provide a variable output voltage. The on-chip high-precisionmax of 16 volts. reference voltage source can provide ±1% accuracy in the V versions, which have a VKAThe HA17431VLP, which is provided in the MPAK-5 package, is designed for use in switching mode power supplies. It provides a built-in photocoupler bypass resistor for the PS pin, and an error amplifier can be easily constructed on the supply side.Features•The V versions provide 2.500 V ±1% at Ta = 25°C•The HA17431VLP includes a photocoupler bypass resistor (2 kΩ)•The reference voltage has a low temperature coefficient•The MPAK-5(5-pin), MPAK(3-pin) and UPAK miniature packages are optimal for use on high mounting density circuit boards•Car use is providedBlock DiagramHA17431 SeriesRev.1, Sep. 2002, page 2 of 24Application Circuit ExampleOrdering InformationVersionItemV VersionA Version Normal VersionPackage Operating Temperature Range Accuracy ±1% ±2.2% ±4% Max 2.525 V 2.550 V 2.595 V Typ 2.500 V 2.495 V 2.495 V Reference voltage (at 25°C)Min2.475 V 2.440 V 2.395 V Cathode voltage 16 V max 40 V max 40 V max Cathode current 50 mA max150 mA max150 mA maxHA17431VPJHA17431PNAJTO-92HA17431PAJ HA17431PJ TO-92MOD HA17431FPAJ Car useHA17431FPJFP-8D –40 to +85°CHA17431 SeriesRev.1, Sep. 2002, page 3 of 24Ordering Information (cont.)VersionItemV VersionA VersionNormal VersionPackage Operating Temperature Range HA17431VLTP HA17432VLTP MPAKHA17431VLP MPAK-5 HA17431VP HA17431PNA TO-92 HA17431VUP HA17431UPA HA17432VUPHA17432UPAUPAK HA17431PA HA17431P TO-92MOD HA17431FPA Industrial useHA17431FPFP-8D HA17431UA Commercial use HA17432UAUPAK –20 to +85°CPin ArrangementHA17431 SeriesRev.1, Sep. 2002, page 4 of 24Absolute Maximum Ratings(Ta = 25°C)Item Symbol HA17431VLP HA17431VP HA17431VPJ Unit Notes Cathode voltage V KA 16 16 16 V 1 PS term. voltage V PS V KA to 16 — — V 1,2,3Continuous cathode current I K –50 to +50 –50 to +50 –50 to +50 mA Reference input currentIref–0.05 to +10–0.05 to +10–0.05 to +10mAPower dissipation P T 150 *4 500 *5 500 *5 mW 4, 5 Operating temperature range Topr–20 to +85–20 to +85–40 to +85°CStorage temperatureTstg –55 to +150 –55 to +150 –55 to +150 °CItem Symbol HA17431VUP/HA17432VUP HA17431VLTP/HA17432VLTP Unit Notes Cathode voltage V KA 16 16V 1PS term. voltage V PS — — V 1,2,3 Continuouscathode current I K –50 to +50 –50 to +50 mA Reference input currentIref–0.05 to +10–0.05 to +10mAPower dissipation P T 800 *8 150 *4 mW 4, 8 Operating temperature range Topr–20 to +85–20 to +85°CStorage temperatureTstg –55 to +150 –55 to +150 °CItemSymbol HA17431PNA HA17431P/PAHA17431FP/FPA HA17431UA/UPA/ HA17432UA/UPAUnitNotes Cathode voltage V KA 4040 40 40 V 1Continuous cathode current I K –100 to +150 –100 to +150 –100 to +150 –100 to +150 mA Reference input currentIref–0.05 to +10–0.05 to +10–0.05 to +10–0.05 to +10mAPower dissipation P T 500 *5 800 *6 500 *7 800 *8 mW 5,6,7,8 Operating temperature range Topr–20 to +85–20 to +85–20 to +85–20 to +85°CStorage temperatureTstg –55 to +150 –55 to +150 –55 to +125 –55 to +150 °CHA17431 SeriesRev.1, Sep. 2002, page 5 of 24Absolute Maximum Ratings (cont.)(Ta = 25°C)Item Symbol HA17431PNAJ HA17431PJ/PAJ HA17431FPJ/FPAJ Unit Notes Cathode voltage V KA 40 40 40 V 1 Continuous cathode current I K –100 to +150 –100 to +150 –100 to +150 mA Reference input currentIref–0.05 to +10–0.05 to +10–0.05 to +10mAPower dissipation P T 500 *5 800 *6 500 *7 mW 5,6,7 Operating temperature range Topr–40 to +85–40 to +85–40 to +85°CStorage temperatureTstg –55 to +150 –55 to +150 –55 to +125 °CNotes: 1. Voltages are referenced to anode.2. The PS pin is only provided by the HA17431VLP.3. The PS pin voltage must not fall below the cathode voltage. If the PS pin is not used, the PS pinis recommended to be connected with the cathode.4. Ta ≤ 25°C. If Ta > 25°C, derate by 1.2 mW/°C.5. Ta ≤ 25°C. If Ta > 25°C, derate by 4.0 mW/°C.6. Ta ≤ 25°C. If Ta > 25°C, derate by 6.4 mW/°C.7. 50 mm × 50 mm × 1.5mmt glass epoxy board(5% wiring density), Ta ≤ 25°C. If Ta > 25°C,derate by 5 mW/°C.8. 15 mm × 25 mm × 0.7mmt alumina ceramic board,Ta ≤ 25°C. If Ta > 25°C, derate by 6.4mW/°C.HA17431 SeriesRev.1, Sep. 2002, page 6 of 24Electrical CharacteristicsHA17431VLP/VP/VPJ/VUP/VLTP, HA17432VUP/VLTP (Ta = 25°C, I K = 10 mA)Item Symbol Min Typ Max Unit Test Conditions Notes Reference voltage Vref 2.475 2.500 2.525 VV KA = VrefReference voltage temperature deviationVref(dev)— 10 — mV V KA = Vref,Ta = –20°C to +85°C 1Reference voltage temperature coefficient ∆Vref/∆Ta— ±30 — ppm/°C V KA = Vref,0°C to 50°C gradientReference voltage regulation ∆Vref/∆V KA — 2.0 3.7 mV/V V KA = Vref to 16 V Reference input currentIref — 2 6 µA R 1 = 10 k Ω, R 2 = ∞ Reference current temperature deviation Iref(dev)— 0.5 —µA R 1 = 10 k Ω, R 2 = ∞,Ta = –20°C to +85°CMinimum cathode currentImin — 0.4 1.0 mA V KA = Vref2 Off state cathode current Ioff — 0.001 1.0 µA V KA = 16 V, Vref = 0 V Dynamic impedance Z KA — 0.2 0.5 Ω V KA = Vref,I K = 1 mA to 50 mA Bypass resistance R PS 1.6 2.0 2.4 k ΩI PS = 1 mA3 Bypass resistance temperature coefficient ∆R PS /∆Ta— +2000 — ppm/°C I PS = 1 mA,0°C to 50°C gradient3HA17431 SeriesRev.1, Sep. 2002, page 7 of 24Electrical Characteristics (cont.)HA17431PJ/PAJ/FPJ/FPAJ/P/PA/UA/UPA/FP/FPA/PNA/PNAJ, HA17432UA/UPA (Ta = 25°C, I K = 10 mA)Item Symbol Min Typ Max Unit Test Conditions Notes 2.440 2.495 2.550 A Reference voltage Vref 2.395 2.495 2.595 V V KA = Vref Normal —11(30)Ta =–20°C to +85°C 1, 4Reference voltage temperature deviationVref(dev)— 5 (17)mV V KA = VrefTa = 0°C to +70°C1, 4 — 1.4 3.7 V KA = Vref to 10 V Reference voltage regulation ∆Vref/∆V KA — 1 2.2mV/V V KA = 10 V to 40 VReference input currentIref — 3.8 6 µA R 1 = 10 k Ω, R 2 = ∞ Reference current temperature deviation Iref(dev)— 0.5 (2.5) µA R 1 = 10 k Ω, R 2 = ∞,Ta = 0°C to +70°C 4Minimum cathode currentImin — 0.4 1.0 mA V KA = Vref2 Off state cathode current Ioff — 0.001 1.0 µA V KA = 40 V, Vref = 0 V Dynamic impedanceZ KA— 0.2 0.5 ΩV KA = Vref,I K = 1 mA to 100 mANotes: 1. Vref(dev) = Vref(max) – Vref(min)2. Imin is given by the cathode current at Vref = Vref (IK=10mA) – 15 mV.3. R PS is only provided in HA17431VLP.4. The maximum value is a design value (not measured).HA17431 SeriesRev.1, Sep. 2002, page 8 of 24MPAK-5(5-pin), MPAK(3-pin) and UPAK Marking PatternsThe marking patterns shown below are used on MPAK-5, MPAK and UPAK products. Note that the product code and mark pattern are different. The pattern is laser-printed.Notes: 1. Boxes (1) to (5) in the figures show the position of the letters or numerals, and are not actuallymarked on the package.2. The letters (1) and (2) show the product specific mark pattern.Product (1)(2) HA17431VLP 4 P HA17431VUP 4 R HA17432VUP 4 S HA17431VLTP 3 A HA17432VLTP 3 B HA17431UA 4 A HA17431UPA 4 B HA17432UA 4 C HA17432UPA 4F3. The letter (3) shows the production year code (the last digit of the year) for UPAK products.4. The bars (a), (b) and (c) show a production year code for MPAK-5 and MPAK products as shownbelow. After 2010 the code is repeated every 8 years.Year 2002 2003 2004 2005 2006 2007 2008 2009 (a) None None None Bar Bar Bar Bar None (b) None Bar Bar None None Bar Bar None (c) Bar None Bar None Bar None Bar None5. The letter (4) shows the production month code (see table below).Production month Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec. Marked code A B C D E F G H J K L M6. The letter (5) shows manufacturing code. For UPAK products.Characteristics CurvesHA17431VLP/VP/VPJ/VUP/VLTP, HA17432VUP/VLTPHA17431PJ/PAJ/FPJ/FPAJ/P/PA/UA/UPA/FP/FPA/PNA/PNAJ, HA17432UA/UPAApplication ExamplesAs shown in the figure on the right, this IC operates as an inverting amplifier, with the REF pin as input pin. The open-loop voltage gain is given by the reciprocal of “reference voltage deviation by cathodevoltage change ” in the electrical specifications, and is approximately 50 to 60 dB. The REF pin has a high input impedance, with an input current Iref of 3.8 µA Typ (V version: Iref = 2 µA Typ). The outputimpedance of the output pin K (cathode) is defined as dynamic impedance Z KA , and Z KA is low (0.2 Ω) over a wide cathode current range. A (anode) is used at the minimum potential, such as ground.Figure 1 Operation DiagramApplication HintsNo. Application Example Description1Reference voltage generation circuitVoutGND VinGNDThis is the simplest reference voltage circuit. The valueof the resistance R is set so that cathode current I K ≥ 1 mA.Output is fixed at Vout ≅ 2.5 V.The external capacitor C L (C L ≥ 3.3 µF) is used to prevent oscillation in normal applications.2 Variable output shunt regulator circuitThis is circuit 1 above with variable output provided.Vout ≅ 2.5 V ×Here,(R 1 + R 2)R 2Since the reference input current Iref = 3.8 µA Typ (V version: Iref = 2 µA Typ) flows through R 1, resistance values are chosen to allow the resultant voltage drop to be ignored.3Single power supply invertingcomparator circuitThis is an inverting type comparator with an input threshold voltage of approximately 2.5 V. Rin is the REF pin protection resistance, with a value of several k Ω to several tens of k Ω.R L is the load resistance, selected so that the cathode current I K • 1 mA when Vout is low.Condition C1C2Vin Less then 2.5 V 2.5 V or moreVout V CC (V OH )Approx. 2 V (V OL )ICOFF ON4 AC amplifier circuitGain G =(DC gain)R 1R 2 // R 3Cutoff frequency fc =12π Cf (R 1 // R 2 // R 3)This is an AC amplifier with voltage gain G = –R 1 / (R 2//R 3). The input is cut by capacitance Cin, so that the REF pin is driven by the AC input signal, centered on 2.5 V DC .R 2 also functions as a resistance that determines the DC cathode potential when there is no input, but if the input level is low and there is no risk of Vout clipping to V CC , this can be omitted.To change the frequency characteristic, Cf should be connected as indicated by the dotted line.5Switching power supply erroramplification circuit12Note:LED R3R4: Light emitting diode in photocoupler : Bypass resistor to feed IK(>Imin) when LED current vanishes : LED protection resistanceThis circuit performs control on the secondary side of a transformer, and is often used with a switching power supply that employs a photocoupler for offlining.The output voltage (between V+ and V –) is given by the following formula:Vout ≅ 2.5 V ×(R 1 + R 2)R 2In this circuit, the gain with respect to the Vout error is as follows:G =×R 2(R 1 + R 2)HA17431 open loop gain ×photocoupler total gainAs stated earlier, the HA17431 open-loop gain is 50 to60 dB.6Constant voltage regulator circuitV CCVoutGNDGNDThis is a 3-pin regulator with a discrete configuration, inwhich the output voltageVout = 2.5 V ×(R 2 + R 3)R 3R 1 is a bias resistance for supplying the HA17431 cathode current and the output transistor Q base current.7Discharge type constant current circuitV SI LThis circuit supplies a constant current ofI L ≅[A] into the load. Caution is required2.5 V R Ssince the HA17431 cathode current is also superimposed on IL .The requirement in this circuit is that the cathode current must be greater than Imin = 1 mA. The I Lsetting therefore must be on the order of several mA or more.8Induction type constant current circuitV I L SIn this circuit, the load is connected on the collector side of transistor Q in circuit 7 above. In this case, the load floats from GND, but the HA17431 cathode current is not superimposed on I L , so that I L can be kept small (1 mA or less is possible). The constant current value is the same as for circuit 7 above:I L ≅[A]2.5 V R SDesign Guide for AC-DC SMPS (Switching Mode Power Supply)Use of Shunt Regulator in Transformer Secondary Side ControlThis example is applicable to both forward transformers and flyback transformers. A shunt regulator is used on the secondary side as an error amplifier, and feedback to the primary side is provided via a photocoupler.Figure 2 Typical Shunt Regulator/Error AmplifierDetermination of External Constants for the Shunt RegulatorDC characteristic determination: In figure 2, R1 and R2are protection resistor for the light emitting diodein the photocoupler, and R2 is a bypass resistor to feed IKminimum, and these are determined as shownbelow. The photocoupler specification should be obtained separately from the manufacturer. Using the parameters in figure 2, the following formulas are obtained:R1 =V0– V F– V KI F + I B, R2 =V FI BVKis the HA17431 operating voltage, and is set at around 3 V, taking into account a margin for fluctuation.R2 is the current shunt resistance for the light emitting diode, in which a bias current IBof around 1/5 IFflows.Next, the output voltage can be determined by R3 and R4, and the following formula is obtained:V0 =R3 + R4R4× Vref, Vref = 2.5 V TypThe absolute values of R3 and R4are determined by the HA17431 reference input current Iref and the ACcharacteristics described in the next section. The Iref value is around 3.8 µA Typ. (V version: 2 µA Typ)AC characteristic determination: This refers to the determination of the gain frequency characteristic of the shunt regulator as an error amplifier. Taking the configuration in figure 2, the error amplifier characteristic is as shown in figure 3.Figure 3 HA17431 Error Amplification CharacteristicIn Figure 3, the following formulas are obtained: GainG 1 = G 0 ≈ 50 dB to 60 dB (determined by shunt regulator)G 2 =R 5R 3Corner frequenciesf 1 = 1/(2π C 1 G 0 R 3) f 2 = 1/(2π C 1 R 5)G 0 is the shunt regulator open-loop gain; this is given by the reciprocal of the reference voltage fluctuation ∆Vref/∆V KA , and is approximately 50 dB.Practical ExampleConsider the example of a photocoupler, with an internal light emitting diode V F = 1.05 V and I F = 2.5 mA, power supply output voltage V 2 = 5 V, and bias resistance R 2 current of approximately 1/5 I F at 0.5 mA. If the shunt regulator V K = 3 V, the following values are found.R 1 =5V – 1.05V – 3V2.5mA + 0.5mA= 316(Ω) (330Ω from E24 series)R 2 =1.05V0.5mA= 2.1(k Ω) (2.2k Ω from E24 series)Next, assume that R 3 = R 4 = 10 k Ω. This gives a 5 V output. If R 5 = 3.3 k Ω and C 1 = 0.022 µF, the following values are found.G 2 = 3.3 k Ω / 10 k Ω = 0.33 times (–10 dB) f 1 = 1 / (2 × π × 0.022 µF × 316 × 10 k Ω) = 2.3 (Hz) f 2 = 1 / (2 × π × 0.022 µF × 3.3 k Ω) = 2.2 (kHz)Package DimensionsDisclaimer1. Hitachi neither warrants nor grants licenses of any rights of Hitachi’s or any third party’s patent,copyright, trademark, or other intellectual property rights for information contained in this document. Hitachi bears no responsibility for problems that may arise with third party’s rights, including intellectual property rights, in connection with use of the information contained in this document. 2.Products and product specifications may be subject to change without notice. Confirm that you have received the latest product standards or specifications before final design, purchase or use.3. Hitachi makes every attempt to ensure that its products are of high quality and reliability. However, contact Hitachi’s sales office before using the product in an application that demands especially high quality and reliability or where its failure or malfunction may directly threaten human life or cause risk of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation, traffic, safety equipment or medical equipment for life support.4. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly for maximum rating, operating supply voltage range, heat radiation characteristics, installationconditions and other characteristics. Hitachi bears no responsibility for failure or damage when used beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable failure rates or failure modes in semiconductor devices and employ systemic measures such as fail-safes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other consequential damage due to operation of the Hitachi product. 5. This product is not designed to be radiation resistant.6. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without written approval from Hitachi.7. Contact Hitachi’s sales office for any questions regarding this document or Hitachi semiconductor products.Sales OfficesHitachi, Ltd.Semiconductor & Integrated CircuitsNippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan Tel: (03) 3270-2111 Fax: (03) 3270-5109Copyright © Hitachi, Ltd., 2002. All rights reserved. Printed in Japan.Hitachi Asia Ltd. Hitachi Tower16 Collyer Quay #20-00 Singapore 049318Tel : <65>-6538-6533/6538-8577 Fax : <65>-6538-6933/6538-3877URL : .sg URL /Hitachi Asia Ltd.(Taipei Branch Office)4/F, No. 167, Tun Hwa North Road Hung-Kuo Building Taipei (105), Taiwan Tel : <886>-(2)-2718-3666 Fax : <886>-(2)-2718-8180 Telex : 23222 HAS-TPURL : Hitachi Asia (Hong Kong) Ltd.Group III (Electronic Components) 7/F., North TowerWorld Finance Centre,Harbour City, Canton RoadTsim Sha Tsui, Kowloon Hong Kong Tel : <852>-2735-9218 Fax : <852>-2730-0281URL : Hitachi Europe GmbHElectronic Components Group Dornacher Straße 3D-85622 FeldkirchenPostfach 201, D-85619 Feldkirchen GermanyTel: <49> (89) 9 9180-0Fax: <49> (89) 9 29 30 00Hitachi Europe Ltd.Electronic Components Group Whitebrook ParkLower Cookham Road MaidenheadBerkshire SL6 8YA, United Kingdom Tel: <44> (1628) 585000Fax: <44> (1628) 585200Hitachi Semiconductor (America) Inc.179 East Tasman Drive San Jose,CA 95134 Tel: <1> (408) 433-1990Fax: <1>(408) 433-0223For further information write to:Colophon 6.0。
基于CPLD的实时电流检测系统设计
225电力电子Power Electronic电子技术与软件工程Electronic Technology & Software Engineering随着电子技术的发展，在各种电子设备中,对功耗的要求越来越严格，已知电压和电流的话即可计算出器件功耗。
本文介绍一种简便的电流检测方法，通过精密电阻将电流值转换为电压值，然后通过电流传感放大电路，将电压值放大，再将放大后的电压值通过A/D 芯片转换为数字信号，A/D 芯片数字端的接口为常用的SPI 接口，CPLD 处理器可以通过SPI 总线方便的读取出量化后的数值，进而推算出相应的电流值，然后通过串口反馈给上位机。
1 电流检测电路组成如图1所示，电源转换芯片输出端和负载电源输入端之间串联一个10mΩ的精密电阻，因为电流一般较小，所以经过一个信号放大芯片MAX4173，将信号放大20倍，再经过一个运算放大器LM124J 实现隔离，最后接到ADC 芯片ADS8661上。
ADS8661通过SPI 总线与CPLD 连接，CPLD 通过串口转USB 芯片CP2103与主机连接，在主机上通过上位机软件方便的读取电流值。
1.1 电流传感放大电路电流传感放大电路如图2所示，选用的芯片型号为MAX4173。
MAX4173是一种低成本、高精度的电流传感放大器，采用小型SOT23-6封装，增益为20倍。
MAX4173采用+3V 至+28V 单电源供电，通常只消耗420uA 的电源电流。
1.2 隔离电路为了实现电流传感放大电路和后级A/D 电路的隔离，中间加了运算放大器电路实现信号的隔离，运算放大器选择常用的TI 公司的LM124J ，按照电压跟随器的解法进行连接。
电压跟随器的输入阻抗高，而输出阻抗低。
一般来说，输入阻抗可以达到几兆欧姆，而输出阻抗低，通常只有几欧姆，甚至更低。
电压隔离器输出电压近似输入电压幅度，并对前级电路呈高阻状态，对后级电路呈低阻状态，因而对前后级电路起到隔离作用。
MICROMEGA 高精度过程控制器说明书
CN77000 R300和R500控制器,图片中含RHS-43孔锯, 易于钻圆孔。
有关订购信息, 请参见最后一页。
CN77333-A2 NEMA 12款方形开孔。
CN77533 NEMA 4方形开孔。
图片为实际尺寸。
1⁄16 DIN MICROMEGA ®自动调谐PID温度/过程控制器U 高精度：±0.5°C (0.9°F), 读数的0.03% U品质优秀, 还有5年保修支持 U 通用输入—过程电压/电流、热电偶、RTD U 双4位数字LED 显示屏和指示器, 用于显示输出和报警状态 U 可选RS232或RS485, OMEGA ® 协议U 继电器、SSR 、DC 脉冲、0 ~ 10 V, 以及 0 ~ 20 mA 输出类型 U 斜坡到设定值功能 U 通用电源, 90 ~ 250 Vac 或Vdc U 双输出和双报警功能U 隔离模拟输出或远程设定值可选将方形控制器放置于圆孔中！高精度、高品质MICROMEGA ®控制器在过程控制中提供无与伦比的灵活性。
每台设备均允许用户从10个热电偶类型（J 、K 、T 、E 、R 、S 、B 、C 、N 和JDIN ）、Pt RTD （100、500或1000 Ω, 385或392曲线）或者模拟电压或电流输入中选择输入类型。
电压/电流输入可完全扩展到各工程单位，可选择小数点，是压力、流量或其他过程输入的理想之选。
MICROMEGA ®控制器具有大型双LED 显示屏，采用前面板配置，可选温度/过程输入，并接受90 ～ 250 Vac 或Vdc 通用电源。
提供单和双输入配置，CN77000系列适用于继电器、SSR 、DC 脉冲或模拟电压或电流输出。
单报警是标准配置。
可选项包括第二报警、 RS232、RS485、模拟输出以及远程设定值可选。
“300”系列控制器有许多特色，更大，紧凑型1⁄4 DIN 控制器，1⁄16 DIN 尺寸。
MAX713中文资料
BATTERY MANAGEMENT Jul 09, 1998 Switch-Mode Battery Charger Delivers 5AThe fast-charge controller IC3 (Figure 1) normally directs current to the battery via an external pnp transistor. In this circuit, the transistor is replaced with a 5A switching regulator (IC1) that delivers equivalent power with higher efficiency.Figure 1. By controlling the PWM duty cycle of switching regulator IC1, the fast-charge controller (IC3) makes efficient delivery of the battery's charging current.IC1 is a 5A buck switching regulator whose output is configured as a current source. Its internal power switch (an npn transistor) is relatively efficient because V CE(SAT) is small in comparison with the 15V-to-40V inputs. (For applications that require 2A or less, the low-saturation, non-Darlington power switch of a MAX726 offers better efficiency.)R6 senses the battery-charging current and enables IC3 to generate an analog drive signal at DRV. The signal is first attenuated by the op amp to assure stability by reducing gain in the control loop. It then drives IC1's compensation pin (VC), which gives direct access to the internal PWM comparator. IC3 thus controls the charging current via the PWM duty cycle of IC1. The Q1 buffer provides current to the DRV input.Loop stability is also determined by the feedback loop's dominant pole, set by C4 at the CC terminal of IC3. If you increase the value of the battery filter capacitor (C5), you should make a proportional increase in the value of C4. Lower values, however, assure good transient response. If your application produces load transients during the fast-charge cycle, check the worst-case response to a load step. To assure proper termination of the charge, battery voltage should settle within 2msec to 5mV times N (where N is the number of battery cells). More InformationMAX713:QuickView-- Full (PDF) Data Sheet-- Free Samples。
MAX333AEWP中文资料
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: , or phone 1-800-998-8800. For small orders, phone 1-800-835-8769.
元器件交易网
Precision, Quad, SPDT, CMOS Analog Switch MAX333A
ABSOLUTE MAXIMUM RATINGS
V+ to V- ..................................................................................44V VIN, VCOM, VNO, VNC ......................................................V- to V+ (VNO - VNC) ............................................................................32V V+ to Ground..........................................................................30V V- to Ground..........................................................................-30V Current, Any Terminal Except VCOM, VNO, or VNC .............30mA Continuous Current, VCOM, VNO, or VNC ............................20mA Peak Current, VCOM, VNO, or VNC (Pulsed at 1ms, 10% duty cycle max) ............................70mA ESD ....................................................................................2000V Note 1: Device mounted with all leads soldered to PC board. Continuous Power Dissipation (TA = +70°C) (Note 1) Plastic DIP (derate above +70°C by 11.11mW/°C) .....889mW SO (derate above +70°C by 10.00mW/°C) ..................800mW CERDIP (derate above +70°C by 11.11mW/°C) ..........889mW TSSOP (derate above +70°C by 7mW/°C) ..................559mW Operating Temperature Ranges: MAX333AC_ _ .....................................................0°C to +70°C MAX333AE_ _ ..................................................-40°C to +85°C MAX333AMJP ................................................-55°C to +125°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10sec) .............................+300°C
MAX4172：高品质的高侧电流感应器说明书
General DescriptionThe MAX4172 is a low-cost, precision, high-side current-sense amplifier for portable PCs, telephones, and other systems where battery/DC power-line monitoring is critical. High-side power-line monitoring is especially useful in battery-powered systems, since it does not interfere with the battery charger’s ground path. Wide bandwidth and ground-sensing capability make the device suitable for closed-loop battery-charger and general-purpose current-source applications. The 0 to 32V input common-mode range is independent of the supply voltage, which ensures that current-sense feedback remains viable, even when connected to a battery in deep discharge.T o provide a high level of flexibility, the MAX4172 functions with an external sense resistor to set the range of load current to be monitored. It has a current output that can be converted to a ground-referred voltage with a single resistor, accommodating a wide range of battery voltages and currents.An open-collector power-good output (PG ) indicates when the supply voltage reaches an adequate level to guarantee proper operation of the current-sense amplifier. The MAX4172 operates with a 3.0V to 32V supply voltage, and is available in a space-saving, 8-pin μMAX ® or SO package.Applications●Portable PCs: Notebooks/Subnotebooks/Palmtops ●Battery-Powered/Portable Equipment●Closed-Loop Battery Chargers/Current Sources ●Smart-Battery Packs ●Portable/Cellular Phones●Portable Test/Measurement Systems●Energy Management SystemsBenefits and Features●Ideal for High-Side Monitoring• 3V to 32V Supply Operation• ±0.5% Typical Full-Scale Accuracy Over T emperature • High Accuracy +2V to +32V Common-Mode Range, Functional Down to 0V, Independent of Supply Voltage• 800kHz Bandwidth [V SENSE = 100mV (1C)]• 200kHz Bandwidth [V SENSE = 6.25mV (C/16)] ●Minimizes Board Space Requirements• μMAX and SO Packages19-1184; Rev 5; 12/20μMAX is a registered trademark of Maxim Integrated Products, Inc.Click here to ask about the production status of specific part numbers.+Denotes a lead(Pb)-free/RoHS-compliant package.Ordering InformationTypical Operating CircuitPin ConfigurationPART TEMP RANGE PIN-PACKAGE MAX4172ESA+-40°C to +85°C 8 SO MAX4172EUA+-40°C to +85°C 8 μMAX MAX4172GUA+-40°C to +105°C8 µMAXMAX4172Low-Cost, Precision, High-SideCurrent-Sense AmplifierV+, RS+, RS-, PG .................................................-0.3V to +36V OUT .............................................................-0.3V to (V+ + 0.3V)Differential Input Voltage, V RS+ - V RS- ..........................±700mV Current into Any Pin .........................................................±50mA Continuous Power Dissipation (T A = +70°C)SO (derate 5.88mW/°C above +70°C) ........................471mW μMAX (derate 4.10mW/°C above +70°C) ...................330mWOperating Temperature RangeMAX4172E_A .................................................-40°C to +85°C MAX4172G_A ...............................................-40°C to +105°C Storage Temperature Range ............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C Soldering Temperature (reflow) .......................................+260°C(V+ = +3V to +32V; V RS+, V RS- = 0 to 32V; T A = T MIN to T MAX ; unless otherwise noted. Typical values are at V+ = +12V, V RS+ = 12V, T A = +25°C.)Absolute Maximum RatingsStresses 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.Electrical CharacteristicsPARAMETER SYMBOLCONDITIONSMIN TYPMAX UNITS Operating Voltage Range V+332V Input Voltage Range V RS-0032V Supply Current I V+I OUT = 0mA0.8 1.6mAInput Offset VoltageV OS V+ = 12V, V RS+ = 12V MAX4172ESA ±0.1±0.75mV MAX4172EUA±0.2±1.6V RS+ ≤ 2.0V4Positive Input Bias Current I RS+V RS+ > 2.0V, I OUT = 0mA 02742.5µA V RS+ ≤ 2.0V, I OUT = 0mA -325+42.5Negative Input Bias CurrentI RS-V RS+ > 2.0V 05085µA V RS+ ≤ 2.0V-65085Maximum V SENSE Voltage 150175mV Low-Level Current ErrorV SENSE = 6.25mV, V+ = 12V,V RS+ = 12V (Note 1)MAX4172ESA ±8.0µAMAX4172EUA ±15Output Current ErrorV SENSE = 100mV, V+ = 12V,V RS+ = 12VMAX4172ESA, T A = -40°C to 0°C±20µAMAX4172EUA,T A = -40°C to 0°C ±50MAX4172ESA,T A = 0°C to +105°C ±10MAX4172EUA,T A = 0°C to +105°C±15OUT Power-Supply Rejection Ratio ΔI OUT /ΔV+3V ≤ V+ ≤ 32V, V RS+ > 2.0V0.2μA/V OUT Common-Mode Rejection RatioΔI OUT /ΔV RS+ 2.0V < V RS+ < 32V0.03μA/VCurrent-Sense Amplifier(V+ = +3V to +32V; V RS+, V RS- = 0 to 32V; T A = T MIN to T MAX ; unless otherwise noted. Typical values are at V+ = +12V, V RS+ = 12V, T A = +25°C.)Note 1: 6.25mV = 1/16 of typical full-scale sense voltage (C/16).Note 2: Valid operation of the MAX4172 is guaranteed by design when PG is low.(V+ = +12V, V RS+ = 12V, R OUT = 1kΩ, T A = +25°C, unless otherwise noted.)Electrical Characteristics (continued)Typical Operating Characteristics1.00.9010OUTPUT ERROR vs. SUPPLY VOLTAGE0.30.40.20.10.80.7V+ (V)E R R O R (%)20300.60.54086-610C/16 LOAD OUTPUT ERROR vs. SUPPLY VOLTAGE-4-242V+ (V)E R R O R (%)2030040105095045010SUPPLY CURRENT vs. SUPPLY VOLTAGE650550850V+ (V)Q U I E S C E N T S U P P L Y C U R R E N T (μA )203075040PARAMETER SYMBOLCONDITIONSMINTYPMAX UNITS Maximum Output Voltage (OUT)I OUT ≤ 1.5mA V+ - 1.2V BandwidthV SENSE = 100mV800kHz V SENSE = 6.25mV (Note 1)200Maximum Output Current I OUT 1.5 1.75mA Transconductance G mG m = I OUT /(V RS+ - V RS-),V SENSE = 100mV , V RS+ > 2.0V T A = 0°C to +105°C 9.81010.2mA/V T A = -40°C to 0°C 9.71010.3V+ Threshold for PG Output Low (Note 2)V+ rising 2.77V V+ falling2.67PG Output Low Voltage V OL I SINK = 1.2mA, V+ = 2.9V, T A = +25°C 0.4V Leakage Current into PG V+ = 2.5V, T A = +25°C 1µA Power-Off Input Leakage Current (RS+, RS-)V+ = 0V, V RS+ = V RS- = 32V 0.11µA OUT Rise Time V SENSE = 0 to 100mV, 10% to 90%400ns OUT Fall TimeV SENSE = 100mV to 0mV, 90% to 10%800ns OUT Settling Time to 1%V SENSE = 5mV to 100mV Rising 1.3µs Falling6OUT Output ResistanceV SENSE = 150mV20MΩCurrent-Sense Amplifier(V+ = +12V, V RS+ = 12V, R OUT = 1kΩ, T A = +25°C, unless otherwise noted.)Typical Operating Characteristics (continued)40-50.1m10m 100m1m1ERROR vs. SENSE VOLTAGE0M A X 4172-04V SENSE (V)E R R O R (%)1051520253035350.010.11101001000POWER-SUPPLY REJECTION RATIOvs. FREQUENCY5POWER-SUPPLY FREQUENCY (kHz)E R R O R (%)151********.00.6-1.80842832OUTPUT ERRORvs. COMMON MODE VOLTAGE-1.4-1.00.2-0.2V+ (V)O U T P U T E R R O R (%)121620-0.6242.982.882.38-50-250125V+ THRESHOLD FOR PG OUTPUT LOWvs. TEMPERATURE2.782.682.582.48M A X 4172-07TEMPERATURE (°C)V + T R I P T H R E S H O L D (V )25507510010µs/div0 to 10mV V SENSE TRANSIENT RESPONSEGNDV SENSE 5mV/divV OUT 50mV/divGNDMAX4172-0810µs/div0 to 100mV V SENSE TRANSIENT RESPONSEGNDV SENSE 50mV/divV OUT 500mV/divGNDMAX4172-09Current-Sense Amplifier(V+ = +12V, V RS+ = 12V, R OUT = 1kΩ, T A = +25°C, unless otherwise noted.)Detailed DescriptionThe MAX4172 is a unidirectional, high-side current-sense amplifier with an input common-mode range that is independent of supply voltage. This feature not only allows the monitoring of current flow into a battery in deep discharge, but also enables high-side current sensing at voltages far in excess of the supply voltage (V+).The MAX4172 current-sense amplifier’s unique topology simplifies current monitoring and control. The MAX4172’s amplifier operates as shown in Figure 1. The battery/load current flows through the external sense resistor(R SENSE ), from the RS+ node to the RSnode. Current flows through R G1 and Q1, and into the current mirror, where it is multiplied by a factor of 50 before appearing at OUT.To analyze the circuit of Figure 1, assume that current flows from RS+ to RS-, and that OUT is connected to GND through a resistor. Since A1’s inverting input is high impedance, no current flows though R G2 (neglecting the input bias current), so A1’s negative input is equal to V SOURCE - (I LOAD x R SENSE ). A1’s open-loop gain forces its positive input to essentially the same voltage level as the negative input. Therefore, the drop across R G1 equalsPin DescriptionTypical Operating Characteristics (continued)5µs/divSTARTUP DELAYGNDV OUT 500mV/divV+2V/divGNDV SENSE = 100mVMAX4172-1010ms/divV+ to PG POWER-UP DELAYGNDPG 2V/divV+2V/divGND100kW PULLUP RESISTOR FROM PG TO +4VMAX4172-11PIN NAME FUNCTION1RS+Power connection to the external sense resistor. The “+” indicates the direction of current flow.2RS-Load-side connection for the external sense resistor. The “-” indicates the direction of current flow.3, 4N.C.No Connect. No internal connection. Leave open or connect to GND.5GND Ground6OUT Current Output. OUT is proportional to the magnitude of the sense voltage (V RS+ - V RS-). A 1kΩresistor from OUT to ground will result in a voltage equal to 10V/V of sense voltage.7PG Power Good Open-Collector Logic Output. A low level indicates that V+ is sufficient to power the MAX4172, and adequate time has passed for power-on transients to settle out.8V+Supply Voltage Input for the MAX4172Current-Sense AmplifierI LOAD x R SENSE. Then, since I RG1 flows through R G1, I RG1 x R G1 = I LOAD x R SENSE. The internal current mirror multiplies I RG1 by a factor of 50 to give I OUT = 50 x I RG1. Substituting I OUT/50 for I RG1, (I OUT/50) x R G1 = I LOAD x R SENSE, or:I OUT = 50 x I LOAD x (R SENSE/R G1)The internal current gain of 50 and the factory-trimmed resistor R G1 combine to result in the device’s transcon-ductance (G m) of 10mA/V. G m is defined as being equal to I OUT/(V RS+ - V RS-). Since (V RS+ - V RS-) = I LOAD x R SENSE, the output current (I OUT) can be calculated with the following formula:I OUT = G m x (V RS+ - V RS-) =(10mA/V) x (I LOAD x R SENSE)Current OutputThe output voltage equation for the MAX4172 is given below:V OUT = (G m) x (R SENSE x R OUT x I LOAD)where V OUT = the desired full-scale output voltage, I LOAD equals the full-scale current being sensed, R SENSE equals the current-sense resistor, R OUT equals the voltage-setting resistor, and G m equals the device’s transconductance (10mA/V).The full-scale output voltage range can be set by changing the R OUT resistor value, but the output voltage must be no greater than V+ - 1.2V. The above equation can be modified to determine the R OUT required for a particular full-scale range:R OUT = (V OUT)/(I LOAD x R SENSE x G m)OUT is a high-impedance current source that can be integrated by connecting it to a capacitive load.PG OutputThe PG output is an open-collector logic output that indicates the status of the MAX4172’s V+ power supply. A logic low on the PG output indicates that V+ is sufficient to power the MAX4172. This level is temperature dependent (see Typical Operating Characteristics graphs), and is typically 2.7V at room temperature. The internal PG comparator has a 100mV (typ) hysteresis to prevent possible oscillations caused by repeated toggling of the PG output, making the device ideal for power-management systems lacking soft-start capability. An internal delay (15μs, typ) in the PG comparator allows adequate time for power-on transients to settle out. The PG status indicator greatly simplifies the design of closed-loop systems by ensuring that the components in the control loop have sufficient voltage to operate correctly. Applications InformationSuggested Component Valuesfor Various ApplicationsThe Typical Operating Circuit is useful in a wide variety of applications. Table 1 shows suggested component values and indicates the resulting scale factors for various applications required to sense currents from 100mA to 10A.Adjust the R SENSE value to monitor higher/lower current levels. Select R SENSE using the guidelines and formulas in the following section.Figure 1. Functional DiagramCurrent-Sense AmplifierSense Resistor, R SENSEChoose R SENSE based on the following criteria:● Voltage Loss: A high R SENSE value causes the power-source voltage to degrade through IR loss. For minimal voltage loss, use the lowest R SENSE value.● Accuracy: A high R SENSE value allows lower currents to be measured more accurately. This is because offsets become less significant when the sense voltage is larger. For best performance, select R SENSE to provide approximately 100mV of sense voltage for the full-scale current in each application.● Efficiency and Power Dissipation: At high current levels, the I 2R losses in R SENSE can be significant. Take this into consideration when choosing the resistor value and its power dissipation (wattage) rating. Also, the sense resistor’s value might drift if it is allowed to heat up excessively.● Inductance: Keep inductance low if I SENSE has a large high-frequency component. Wire-wound resis-tors have the highest inductance, while metal film is somewhat better. Low-inductance metal-film resistors are also available. Instead of being spiral wrapped around a core, as in metal-film or wirewound resistors, they are a straight band of metal and are available in values under 1Ω.● Cost: If the cost of R SENSE is an issue, you might want to use an alternative solution, as shown in Figure 2. This solution uses the PCB traces to create a sense resistor. Because of the inaccuracies of the copper resistor, the full-scale current value must be adjusted with a potentiometer. Also, copper’s resistance temperature coefficient is fairly high (approximately 0.4%/°C).In Figure 2, assume that the load current to be measured is 10A, and that you have determined a 0.3-inchwide, 2-ounce copper to be appropriate. The resistivity of 0.1-inch-wide, 2-ounce (70μm thickness) copper is 30mΩ/ft. For 10A, you might want R SENSE = 5mΩ for a 50mV drop at full scale. This resistor requires about 2 inches of 0.1-inch-wide copper trace.Current-Sense Adjustment(Resistor Range, Output Adjust)Choose R OUT after selecting R SENSE . Choose R OUT to obtain the full-scale voltage you require, given the full-scale I OUT determined by R SENSE . OUT’s high impedance permits using R OUT values up to 200kΩ with minimal error. OUT’s load impedance (e.g., the input of an op amp or ADC) must be much greater than R OUT (e.g., 100 x R OUT ) to avoid degrading measurement accuracy.High-Current MeasurementThe MAX4172 can achieve high-current measurements by using low-value sense resistors, which can be paralleled to further increase the current-sense limit. As an alternative, PCB traces can be adjusted over a wide range.Figure 2. MAX4172 Connections Showing Use of PC BoardTable 1. Suggested Component ValuesFULL-SCALE LOAD CURRENT(A)CURRENT-SENSERESISTOR,RSENSE (mΩ)OUTPUTRESISTOR, ROUT(kΩ)FULL-SCALE OUTPUTVOLTAGE, V OUT (V)SCALE FACTOR,V OUT /ISENSE (V/A)0.11000 3.48 3.4834.81100 3.48 3.48 3.48520 3.48 3.480.69610103.483.48.348Current-Sense AmplifierPower-Supply Bypassing and GroundingIn most applications, grounding the MAX4172 requires no special precautions. However, in high-current systems, large voltage drops can develop across the ground plane, which can add to or subtract from V OUT. Use a single-point star ground for the highest currentmeasurement accuracy. The MAX4172 requires no special bypassing and responds quickly to transient changes in line current. If the noise at OUT caused by these transients is a problem, you can place a 1μF capacitor at the OUT pin to ground. You can also place a large capacitor at the RS terminal (or load side of the MAX4172) to decouple the load, reducing the current transients. These capacitors are not required for MAX4172 operation or stability. The RS+ and RS- inputs can be filtered by placing a capacitor (e.g., 1μF) between them to average the sensed current.Chip Information SUBSTRATE CONNECTED TO GNDPackage InformationFor the latest package outline information and land patterns (footprints), go to /packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status.PACKAGE TYPE PACKAGE CODE OUTLINE ND PATTERN NO.SO S8+421-004190-0096μMAX U8+121-003690-0092Current-Sense AmplifierRevision HistoryREVISION NUMBER REVISION DATEDESCRIPTIONPAGES CHANGED012/96Initial release—16/10Clarified 0 to 2V is not a high-accuracy range for the device, removed futureproduct reference, added lead-free options and soldering temperature 1, 2210/12Revised the Package Information 835/15Revised Benefits and Features section146/16Added G-temp grade for 105°C operation and updated Typical Operating Characteristics section1–4512/20Updated the Package Information table8Maxim 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. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.Current-Sense AmplifierFor pricing, delivery, and ordering information, please visit Maxim Integrated’s online storefront at https:///en/storefront/storefront.html.。
MAX4173
高端电流检测放大器性能分析在讨论器件功能时，检流放大器可以看作一个输入级浮空的仪表/差分放大器。
这意味着即使器件采用VCC=3.3V或5V单电源供电，在输入共模电压远高于电源电压的条件下，器件仍然能够正常放大差分输入信号。
检流放大器的共模电压可以很高，例如可以高达28V(MAX4372和MAX4173)或76V(MAX4080和MAX4081)。
检流放大器的这一特性使其非常适合高端电流检测应用，这类应用往往需要对高压侧检流电阻两端的微小电压进行放大，并馈入到低压ADC或低压模拟控制环路进行处理。
这种情况下，通常需要在信号源端(例如检流电阻两端)对电流检测信号进行滤波。
可以采用差分滤波器(图1)滤除负载电流和检流电压的“毛刺”，也可以采用共模滤波器(图2)以增强在出现共模电压尖峰或瞬时过压时的ESD保护能力。
合理选择元件构建滤波器，如果元件选择不当，则会引入一些无法预知的失调电压和增益误差，降低电路性能。
滤波器的选择MAX4173检流放大器如图3所示，该器件的检流电阻可直接连接到芯片的RS+和RS-端。
器件内部的运算放大器将检流电阻两端的差分电压恢复成RG1两端的差分电压，即ILOAD×RSENSE=VSENSE=IRG1×RG1。
然后，内部电流镜对电流IRG1进行电平转换和放大，产生输出电流IRGD。
MAX4173的内部电路中RGD=12kΩ，而RG1=6kΩ。
因此，由于RGD和RG1为片上电阻，实际阻值会因不同的半导体工艺而产生多达±30%的差异。
但是，因为最终增益精度取决于RGD和RG1的比例，所以可以很好地控制增益，并在生产过程中灵活调整。
构建差分/共模滤波器(如图1和图2所示)时，需要在检流电阻的RSENSE+和RSENSE-端与器件的RS+和RS-引脚之间接入串联电阻，此时相当于改变了芯片的RG1和RG2。
由上面的等式可知，改变后的RG1将引入增益误差。
同时，由于RG1的绝对误差最大可达±30%，因此增益误差最大将达到±30%，由于这种误差的引入是随机的，所以无法控制或估算误差。
MAX6174AASA中文资料
General DescriptionThe MAX6173–MAX6177 are low-noise, high-precision voltage references. The devices feature a proprietary temperature-coefficient curvature-correction circuit and laser-trimmed thin-film resistors that result in a very low 3ppm/°C temperature coefficient and excellent ±0.06%initial accuracy. The MAX6173–MAX6177 provide a TEMP output where the output voltage is proportional to the die temperature, making the devices suitable for a wide variety of temperature-sensing applications. The devices also provide a TRIM input, allowing fine trimming of the output voltage with a resistive divider network. Low temperature drift and low noise make the devices ideal for use with high-resolution A/D or D/A converters.The MAX6173–MAX6177 provide accurate preset +2.5V,+3.3V, +4.096V, +5.0V, and +10V reference voltages and accept input voltages up to +40V. The devices draw 320µA (typ) of supply current and source 30mA or sink 2mA of load current. The MAX6173–MAX6177 use bandgap technology for low-noise performance and excellent accuracy. The MAX6173–MAX6177 do not require an output bypass capacitor for stability, and are stable with capacitive loads up to 100µF. Eliminating the output bypass capacitor saves valuable board area in space-critical applications.The MAX6173–MAX6177 are available in an 8-pin SO package and operate over the automotive (-40°C to +125°C) temperature range.ApplicationsA/D Converters Voltage Regulators D/A Converters Threshold DetectorsDigital VoltmetersFeatures♦Wide (V OUT + 2V) to +40V Supply Voltage Range ♦Excellent Temperature Stability: 3ppm/°C (max)♦Tight Initial Accuracy: 0.05% (max)♦Low Noise: 3.8µV P-P (typ at 2.5V Output)♦Sources up to 30mA Output Current ♦Low Supply Current: 450µA (max at +25°C)♦Linear Temperature Transducer Voltage Output ♦+2.5V, +3.3V, +4.096V, +5.0V, or +10V Output Voltages ♦Wide Operating Temperature Range: -40°C to +125°C ♦No External Capacitors Required for Stability ♦Short-Circuit ProtectedMAX6173–MAX6177High-Precision Voltage References withTemperature Sensor________________________________________________________________Maxim Integrated Products 119-3249; Rev 0; 5/04For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .Pin Configuration appears at end of data sheet.Ordering Information/Selector GuideTypical Operating CircuitM A X 6173–M A X 6177High-Precision Voltage References with Temperature SensorABSOLUTE MAXIMUM RATINGSStresses 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.IN to GND...............................................................-0.3V to +42V OUT, TRIM, TEMP to GND...........................-0.3V to (V IN + 0.3V)Output Short Circuit to GND.....................................................5s Continuous Power Dissipation (T A = +70°C)8-Pin SO (derate 5.9mW/°C above +70°C) ..................471mWOperating Temperature Range ........................-40°C to +125°C Junction Temperature .....................................................+150°C Storage Temperature Range ............................-65°C to +150°C Lead Temperature (soldering, 10s) ................................+300°CELECTRICAL CHARACTERISTICS—MAX6173 (V OUT = 2.5V)MAX6173–MAX6177High-Precision Voltage References withTemperature Sensor_______________________________________________________________________________________3ELECTRICAL CHARACTERISTICS—MAX6177 (V OUT = 3.3V)M A X 6173–M A X 6177High-Precision Voltage References with Temperature Sensor 4_______________________________________________________________________________________ELECTRICAL CHARACTERISTICS—MAX6174 (V OUT = 4.096V)MAX6173–MAX6177High-Precision Voltage References withTemperature Sensor_______________________________________________________________________________________5ELECTRICAL CHARACTERISTICS—MAX6175 (V OUT = 5.0V)M A X 6173–M A X 6177High-Precision Voltage References with Temperature Sensor 6_______________________________________________________________________________________ELECTRICAL CHARACTERISTICS—MAX6176 (V OUT = 10V)Note 1:All devices are 100% production tested at T A = +25°C and guaranteed by design over T A = T MIN to T MAX , as specified.Note 2:Temperature coefficient is defined as ∆V OUT divided by the temperature range.Note 3:Line and load regulation specifications do not include the effects of self-heating.Note 4:Thermal hysteresis is defined as the change in +25°C output voltage before and after cycling the device from T MAX to T MIN .Typical Operating Characteristics(V IN = +5V for V OUT = +2.5V, V IN = +15V for V OUT = +10V, I OUT = 0, T A = +25°C, unless otherwise noted.)MAX6173–MAX6177High-Precision Voltage References withTemperature Sensor_______________________________________________________________________________________72.4982.5002.4992.5012.502OUTPUT VOLTAGE vs. TEMPERATURE(V OUT = 2.5V)TEMPERATURE (°C)O U T P U T V O L T A G E (V )-502550-25751001259.9939.9989.99510.0019.9999.99610.0029.9979.99410.00010.003OUTPUT VOLTAGE vs. TEMPERATURE(V OUT = 10V)TEMPERATURE (°C)O U T P U T V O L T A G E (V )-502550-25751001250.500.25-0.25-0.5015510202530LOAD REGULATION vs.SOURCE CURRENT (V OUT = 2.5V)SOURCE CURRENT (mA)O U T P U T V O L T A G E C H A N G E (m V )0.500.25-0.25-0.5015510202530LOAD REGULATIONvs. SOURCE CURRENT (V OUT = 10V)SOURCE CURRENT (mA)O U T P U T V O L T A G E C H A N G E (m V )1.000.750.500.25-0.250-0.500 1.00.5 1.52.0LOAD REGULATIONvs. SINK CURRENT (V OUT = 2.5V)SINK CURRENT (mA)O U T P U T V O L T A G E C H A N G E (m V )2.01.51.00.5-0.50-1.01.00.51.52.0LOAD REGULATIONvs. SINK CURRENT (V OUT = 10V)SINK CURRENT (mA)O U T P U T V O L T A G E C H A N G E (m V )060204080100LINE REGULATION vs. TEMPERATURE(V OUT = 2.5V)INPUT VOLTAGE (V)O U T P U T V O L T A G E C H A N G E (µV )20255101530354015050100200250300LINE REGULATION vs. TEMPERATURE(V OUT = 10V)INPUT VOLTAGE (V)O U T P U T V O L T A G E C H A N G E (µV )12283216202436400.51.51.02.02.5MINIMUM INPUT-OUTPUT DIFFERENTIAL vs. SOURCE CURRENT (V OUT = 2.5V)SOURCE CURRENT (mA)D R O P O U T V O L T A GE (V )12164820Typical Operating Characteristics (continued)(V IN = +5V for V OUT = +2.5V, V IN = +15V for V OUT = +10V, I OUT = 0, T A = +25°C, unless otherwise noted.)M A X 6173–M A X 6177High-Precision Voltage References with Temperature Sensor 8_______________________________________________________________________________________0.51.51.02.02.5MINIMUM INPUT-OUTPUT DIFFERENTIAL vs. SOURCE CURRENT (V OUT = 10V)SOURCE CURRENT (mA)D R O P O U T V O L T A GE (V )12164820-140-100-120-60-80-20-4000.0010.110.01101001000POWER-SUPPLY REJECTION RATIO vs. FREQUENCY (V OUT = 2.5V)M A X 6173 t o c 11FREQUENCY (kHz)P S R R (d B )-120-100-60-80-20-4000.0010.110.01101001000POWER-SUPPLY REJECTION RATIO vs. FREQUENCY (V OUT = 10V)M A X 6173 t o c 12FREQUENCY (kHz)P S R R (d B )0.0010.10.011011000.110.01101001000OUTPUT IMPEDANCE vs. FREQUENCY(V OUT = 2.5V)M A X 6173 t o c 13FREQUENCY (kHz)O U T P U T I M P E D A N C E (Ω)010050200150250300350400101552025303540SUPPLY CURRENT vs. INPUT VOLTAGE(V OUT = 2.5V)INPUT VOLTAGE (V)S U P P L Y C U R R E N T (µA )100502001502503003504000101552025303540SUPPLY CURRENT vs. INPUT VOLTAGE(V OUT= 10V)INPUT VOLTAGE (V)S U P P L Y C U R R E N T (µA )250300275325350-50-25255075100125SUPPLY CURRENT vs. TEMPERATURE(V OUT = 2.5V)M A X 6173 t o c 16TEMPERATURE (°C)S U P P L Y C U R R E N T (µA )250325300275350375-50-25255075100125SUPPLY CURRENT vs. TEMPERATURE(V OUT = 10V)M A X 6173 t o c 17TEMPERATURE (°C)S U P P L Y C U R R E N T (µA )400600500700800-50-25255075100125TEMP VOLTAGEvs. TEMPERATURE (V OUT = 2.5V)M A X 6173 t o c 18TEMPERATURE (°C)T E M P V O L T A G E (m V )Typical Operating Characteristics (continued)(V IN = +5V for V OUT = +2.5V, V IN = +15V for V OUT = +10V, I OUT = 0, T A = +25°C, unless otherwise noted.)MAX6173–MAX6177High-Precision Voltage References withTemperature Sensor_______________________________________________________________________________________9400600500800700900-50-25255075100125TEMP VOLTAGEvs. TEMPERATURE (V OUT = 10V)M A X 6173 t o c 19TEMPERATURE (°C)T E M P V O L T A G E (m V )2.352.502.452.402.602.552.650.51.01.52.02.5OUTPUT VOLTAGEvs. TRIM VOLTAGE (V OUT = 2.5V)M A X 6173 t o c 20TRIM VOLTAGE (V)O U T P U T V O L T A G E (V ) 2.4982.5002.4992.5012.5022004006008001000LONG-TERM STABILITY vs. TIME(V OUT = 2.500V)TIME (hours)V O U T (V )9.99810.0009.99910.00110.0022004006008001000LONG-TERM STABILITY vs. TIME(V OUT = 10.0V)TIME (hours)V O U T (V )1000100OUTPUT-VOLTAGE NOISE DENSITY vs. FREQUENCY (V OUT = 2.5V)M A X 6173 t o c 23FREQUENCY (Hz)O U T P U T V O L T A G E -N O I S E D E N S I T Y (n V /√H z )0.1100100011010,0001000100OUTPUT-VOLTAGE NOISE DENSITY vs. FREQUENCY (V OUT = 10V)MA X 6173 t o c24FREQUENCY (Hz)O U T P U T V O L T A G E -N O I S E D E N S I T Y (n V /√H z )0.110010001100.1Hz TO 10Hz OUTPUT NOISE(V OUT = 2.5V)MAX6173 toc251µV/div 1s/div 0.1Hz TO 10Hz OUTPUT NOISE(V OUT = 10V)MAX6173 toc264µV/div1s/divTypical Operating Characteristics (continued)(V IN = +5V for V OUT = +2.5V, V IN = +15V for V OUT = +10V, I OUT = 0, T A = +25°C, unless otherwise noted.)M A X 6173–M A X 6177High-Precision Voltage References with Temperature Sensor 10______________________________________________________________________________________LOAD TRANSIENT(V OUT = 2.5V, C OUT = 0, 0 TO 20mA)MAX6173 toc27I OUTV OUTAC-COUPLED 1V/div20mA 10µs/divLOAD TRANSIENT(V OUT = 10V, C OUT = 0, 0 TO 20mA)MAX6173 toc28I OUT V OUTAC-COUPLED 1V/div20mA 10µs/divLOAD TRANSIENT(V OUT = 2.5V, C OUT = 1µF, 0 TO +20mA)MAX6173 toc29I OUT V OUTAC-COUPLED 50mV/div 020mA200µs/div LOAD TRANSIENT(V OUT = 10V, C OUT = 1µF, 0 TO 20mA)I OUT V OUTAC-COUPLED 100mV/div20mA100µs/divLOAD TRANSIENT(V OUT = 2.5V, C OUT = 0, 0 TO -2mA)MAX6173 toc31I OUT V OUTAC-COUPLED 200mV/div 0-2mA40µs/div LOAD TRANSIENT(V OUT = 10V, C OUT = 0, 0 TO -2mA)MAX6173 toc32I OUT V OUTAC-COUPLED 20mV/div0-2mA200µs/divTypical Operating Characteristics (continued)(V IN = +5V for V OUT = +2.5V, V IN = +15V for V OUT = +10V, I OUT = 0, T A = +25°C, unless otherwise noted.)MAX6173–MAX6177Temperature Sensor______________________________________________________________________________________11LOAD TRANSIENT(V OUT = 2.5V, C OUT = 1µF, 0 TO -2mA)I OUT V OUTAC-COUPLED 20mV/div 0-2mA400µs/div LOAD TRANSIENT(V OUT = 10V, C OUT = 1µF, 0 TO -2mA)I OUT V OUTAC-COUPLED 5mV/div0-2mA400µs/divLINE TRANSIENT (V OUT = 2.5V)V IN V OUTAC-COUPLED 200mV/div5.5V 4.5V10µs/divLINE TRANSIENT (V OUT = 10V)MAX6173 toc36V IN 1V/div V OUTAC-COUPLED 200mV/div15.5V 14.5V2µs/divTURN-ON TRANSIENT (V OUT = 2.5V, C OUT= 0)VIN 2V/div V OUT 1V/div GNDGND10µs/divTURN-ON TRANSIENT (V OUT = 2.5V, C OUT = 1µF)MAX6173 toc38V IN 2V/div V OUT 1V/div GNDGND40µs/divM A X 6173–M A X 6177Temperature Sensor 12______________________________________________________________________________________Detailed DescriptionThe MAX6173–MAX6177 precision voltage references provide accurate preset +2.5V, +3.3V, +4.096V, +5.0V,and +10V reference voltages from up to +40V input volt-ages. These devices feature a proprietary temperature-coefficient curvature-correction circuit and laser-trimmed thin-film resistors that result in a very low 3ppm/°C tem-perature coefficient and excellent 0.05% initial accuracy.The MAX6173–MAX6177 draw 340µA of supply current and source 30mA or sink 2mA of load current.Trimming the Output VoltageTrim the factory-preset output voltage on the MAX6173–MAX6177by placing a resistive divider net-work between OUT, TRIM, and GND.Use the following formula to calculate the change in output voltage from its preset value:∆V OUT = 2 x (V TRIM - V TRIM (open)) x k where:V TRIM = 0V to V OUTV TRIM (open)= V OUT (nominal) / 2 (typ)k = ±6% (typ)For example, use a 50k Ωpotentiometer (such as the MAX5436) between OUT, TRIM, and GND with the potentiometer wiper connected to TRIM (see Figure 2).As the TRIM voltage changes from V OUT to GND, the output voltage changes accordingly. Set R2 to 1M Ωor less. Currents through resistors R1 and R2 add to the quiescent supply current.Typical Operating Characteristics (continued)(V IN = +5V for V OUT = +2.5V, V IN = +15V for V OUT = +10V, I OUT = 0, T A = +25°C, unless otherwise noted.)TURN-ON TRANSIENT (V OUT = 10V, C OUT = 0)MAX6173 toc39V IN 5V/div V OUT 5V/div GNDGND100µs/divTURN-ON TRANSIENT (V OUT = 10V, C OUT = 1µF)MAX6173 toc40V IN 5V/divV OUT 5V/div GNDGND200µs/divPin DescriptionMAX6173–MAX6177Temperature Sensor______________________________________________________________________________________13Temp OutputThe MAX6173–MAX6177 provide a temperature output proportional to die temperature. TEMP can be calculated from the following formula:TEMP (V) = T J (°K) x nwhere T J = the die temperature,n = the temperature multiplier,T A = the ambient temperature.Self-heating affects the die temperature and conversely,the TEMP output. The TEMP equation assumes the output is not loaded. If device power dissipation is negligible,then T J ≈T A .Applications InformationBypassing/Output CapacitanceFor the best line-transient performance, decouple theinput with a 0.1µF ceramic capacitor as shown in the Typical Operating Circuit . Place the capacitor as close to IN as possible. When transient performance is less important, no capacitor is necessary.The MAX6173–MAX6177do not require an output capacitor for stability and are stable with capacitive loads up to 100µF. In applications where the load or thesupply can experience step changes, a larger output capacitor reduces the amount of overshoot (under-shoot) and improves the circuit’s transient response.Place output capacitors as close to the devices as pos-sible for best performance.Supply CurrentThe MAX6173–MAX6177consume 320µA (typ) of qui-escent supply current. This improved efficiency reduces power dissipation and extends battery life.Thermal HysteresisThermal hysteresis is the change in the output voltage at T A = +25°C before and after the device is cycled over its entire operating temperature range. Hysteresis is caused by differential package stress appearing across the bandgap core transistors. The typical ther-mal hysteresis value is 120ppm.Turn-On TimeThe MAX6173–MAX6177typically turn on and settle to within 0.1% of the preset output voltage in 150µs (2.5V output). The turn-on time can increase up to 150µs with the device operating with a 1µF load.Short-Circuited OutputsThe MAX6173–MAX6177 feature a short-circuit-protected output. Internal circuitry limits the output current to 60mA when short circuiting the output to ground. The output current is limited to 3mA when short circuiting the output to the input.Figure 1. Temperature Coefficient vs. Operating Temperature Range for a 1 LSB Maximum ErrorM A X 6173–M A X 6177Temperature Sensor 14______________________________________________________________________________________Temperature Coefficient vs. OperatingTemperature Range for a1 LSB Maximum ErrorIn a data converter application, the reference voltage of the converter must stay within a certain limit to keep the error in the data converter smaller than the resolu-tion limit through the operating temperature range.Figure 1 shows the maximum allowable reference-volt-age temperature coefficient to keep the conversion error to less than 1 LSB, as a function of the operating temperature range (T MAX - T MIN ) with the converter resolution as a parameter. The graph assumes the ref-erence-voltage temperature coefficient as the only parameter affecting accuracy.In reality, the absolute static accuracy of a data con-verter is dependent on the combination of many para-meters such as integral nonlinearity, differential nonlinearity, offset error, gain error, as well as voltage-reference changes.Figure 2. Applications Circuit Using the MAX5436 PotrntiometerChip InformationTRANSISTOR COUNT: 429PROCESS: BiCMOSMAX6173–MAX6177Temperature SensorMaxim c annot assume responsibility for use of any c irc uitry other than c irc uitry entirely embodied in a Maxim produc t. No c irc uit patent lic enses 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 ____________________15©2004 Maxim Integrated Products Printed USAis a registered trademark of Maxim Integrated Products.Package 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.)。
34713资料
MA3X717E资料
Schottky Barrier Diodes (SBD)
MA3X717D, MA3X717E
Silicon epitaxial planar type
For switching circuits I Features
• Two MA3X717s are contained in one package • Optimum for low-voltage rectification because of its low forward rise voltage (VF) (Low VF type of MA3X704D/E) • Optimum for high-frequency rectification because of its short reverse recovery time (trr)
2.8 − 0.3 0.65 ± 0.15 1.5
+ 0.25 − 0.05 + 0.2
Unit : mm
0.65 ± 0.15
0.95
1.9 ± 0.2
2.9 − 0.05
1 3 2
+ 0.2
0.95
1.45
1.1 − 0.1
I Absolute Maximum Ratings Ta = 25°C
0
5
10
15
20
25
30
Forward voltage VF (V)
Ambient temperature Ta (°C)
Reverse voltage VR (V)
Ct VR
3.2 2.8 f = 1 MHz Ta = 25°C
IR T a
104
Terminal capacitance Ct (pF)
MAX4173FEUT-T中文资料
Ordering Information
PIN-PACKAGE 6 SOT23-6 8 SO 6 SOT23-6 8 SO 6 SOT23-6 8 SO
SOT TOP MARK AABN — AABO — AABP —
________________________________________________________________ Maxim Integrated Products 1
The MAX4173 operates from a single +3V to +28V supply, typically draws only 420µA of supply current over the extended operating temperature range (-40°C to +85°C), and is offered in the space-saving SOT23-6 package.
VSENSE = +100mV, VCC = +12V, VRS+ = +12V, TA = +25°C
VSENSE = +100mV, VCC = +28V, VRS+ = +28V VSENSE = +100mV, VCC = +12V, VRS+ = +0.1V
亚德诺ADA4177-1 ADA4177-2 ADA4177-4运算放大器数据手册说明书
提供OVP 和EMI 保护的精密、 低噪声、低偏置电流运算放大器 数据手册ADA4177-1/ADA4177-2/ADA4177-4Rev. DDocument FeedbackInformation 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 implication or otherwise under any patent or patent rights of Analog Devices. Trademarks andregistered trademarks are the property of their respective owners.One Technology Way, P .O. Box 9106, Norwood, MA 02062-9106, U.S.A.Tel: 781.329.4700 ©2014–2017 Analog Devices, Inc. All rights reserved. Technical Support /cnADI 中文版数据手册是英文版数据手册的译文，敬请谅解翻译中可能存在的语言组织或翻译错误，ADI 不对翻译中存在的差异或由此产生的错误负责。
如需确认任何词语的准确性，请参考ADI 提供的最产品特性低失调电压：60 μV （最大值，25°C ，8引脚和14引脚SOIC ） 低失调电压漂移：1 μV/°C （最大值，8引脚和14引脚SOIC ） 低输入偏置电流：1 nA （最大值，25°C ）低电压噪声密度：8 nV/√Hz （典型值，1 kHz ）大信号电压增益(AVO)：100 dB （最小值，全电源电压和工作温度范围）支持高于或低于供电轨电压32 V 的输入过压保护 集成EMI 滤波器70 dB （1000 MHz 下的典型抑制） 90 dB （2400 MHz 下的典型抑制） 轨到轨输出摆幅低供电电流：每个放大器500 µA （典型值） 宽带宽增益带宽积(A V = 100)：3.5 MHz （典型值） 单位增益交越(A V = 1)：3.5 MHz （典型值） −3 dB 带宽(A V = 1)：6 MHz （典型值） 双电源供电额定电压±5 V 至±15 V ，工作电压±2.5 V 至±18 V 单位增益稳定 无反相长期失调电压漂移（10,000小时）：2 µV （典型值） 温度迟滞：2 µV （典型值）应用无线基站控制电路 光纤网络控制电路 仪器仪表传感器和控制元件热电偶、RTD 、应变计、分流测量概述ADA4177-1单通道、ADA4177-2双通道和ADA4177-4四通道放大器具有低失调电压（2 μV 典型值）和低漂移（1 μV/°C 最大值）、低输入偏置电流、低噪声和低功耗（500 μA 典型值）特性。
MAX9813HEKA-T中文资料
Applications
Notebook Computers PDAs Smart Phones Car Kit Adapters Digital Cameras Video Tape Recorders
Pin Configurations, Selector Guide, and Typical Operating Circuits appear at end of data sheet. Rail-to-Rail is a trademark of Nippon Motorola Ltd.
元器件交易网
Tiny, Low-Cost, Single/Dual-Input, Fixed-Gain Microphone Amplifiers with Integrated Bias MAX9812/MAX9813
ABSOLUTE MAXIMUM RATINGS
(All voltages referenced to GND) VCC ........................................................................-0.3V to +6.0V All Other Pins..............................................-0.3V to (VCC + 0.3V) Continuous Current (IN, SHDN, IN1, IN2, IN1/IN2)...........±20mA OUT, BIAS Short-Circuit Duration (to GND or VCC) ...Continuous Continuous Power Dissipation (TA = +70°C) 6-Pin SC70 (derate 3.1mW/°C above +70°C) ..............245mW 8-Pin SOT23 (derate 8.9mw/°C above +70°C) ............714mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range .............................-65°C to +150°C Junction Temperature ......................................................+150°C Lead Temperature (soldering, 10s) .................................+300°C
MAX1737EEI中文资料
Stresses 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.
Ordering Information
PART MAX1737EEI TEMP. RANGE -40°C to +85°C PIN-PACKAGE 28 QSOP
Applications
Notebook Computers Hand-Held Instruments Li+ Battery Packs Desktop Cradle Chargers
INPUT SUPPLY
Typical Operating Circuit
DCIN VL
CSSP CSSN DHI
Pin Configuration
TOP VIEW
VL 1 ISETIN 2 ISETOUT 3 THM 4 REF 5 GND 6 BATT 7 VADJ 8 CCV 9 CCS 10 CCI 11 CELL 12 TIMER1 13 TIMER2 14 28 DCIN 27 CSSP 26 CSSN 25 DHI 24 LX
MAX4173中文资料
Pin Configurations appear at end of data sheet.
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: , or phone 1-800-998-8800. For small orders, phone 1-800-835-8769.
MAX4173T/F/H
A/D CONVERTER OUT GND LOAD/ BATTERY
OrderingX4173TEUT-T MAX4173TESA MAX4173FEUT-T MAX4173FESA MAX4173HEUT-T MAX4173HESA GAIN (V/V) 20 20 50 50 100 100 TEMP. RANGE -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C PIN-PACKAGE 6 SOT23-6 8 SO 6 SOT23-6 8 SO 6 SOT23-6 8 SO SOT TOP MARK AABN – AABD – AABP –
2
_______________________________________________________________________________________
Stresses 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.
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General DescriptionThe MAX4173 low-cost, precision, high-side current-sense amplifier is available in a tiny SOT23-6 package.It features a voltage output that eliminates the need for gain-setting resistors and it is ideal for today’s notebook computers, cell phones, and other systems where cur-rent monitoring is critical. High-side current monitoring is especially useful in battery-powered systems, since it does not interfere with the ground path of the battery charger. The input common-mode range of 0 to +28V is independent of the supply voltage and ensures that the current-sense feedback remains viable even when con-nected to a battery in deep discharge. The MAX4173’s wide 1.7MHz bandwidth makes it suitable for use inside battery charger control loops.The combination of three gain versions and a user-selectable external sense resistor sets the full-scale current reading. This feature offers a high level of inte-gration, resulting in a simple and compact current-sense solution.The MAX4173 operates from a single +3V to +28V sup-ply, typically draws only 420µA of supply current over the extended operating temperature range (-40°C to +85°C), and is offered in the space-saving SOT23-6package.ApplicationsNotebook ComputersPortable/Battery-Powered Systems Smart Battery Packs/Chargers Cell PhonesPower-Management SystemsGeneral System/Board-Level Current Monitoring PA Bias ControlPrecision Current SourcesFeatures♦Low-Cost, Compact Current-Sense Solution ♦Wide 0 to +28V Common-Mode Range Independent of Supply Voltage ♦Three Gain Versions Available+20V/V (MAX4173T)+50V/V (MAX4173F)+100V/V (MAX4173H)♦±0.5% Full-Scale Accuracy♦±0.3mV Input Offset Voltage (MAX4173T)♦420µA Supply Current♦Wide 1.7MHz Bandwidth (MAX4173T)♦+3V to +28V Operating Supply♦Available in Space-Saving SOT23-6 PackageMAX4173T/F/HLow-Cost, SOT23, Voltage-Output, High-Side Current-Sense Amplifier________________________________________________________________Maxim Integrated Products 1Typical Operating Circuit19-1434; Rev 3; 12/04Ordering InformationPin Configurations appear at end of data sheet.For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .M A X 4173T /F /HLow-Cost, SOT23, Voltage-Output, High-Side Current-Sense Amplifier 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS(V RS+ = 0 to +28V, V CC = +3V to +28V, V SENSE = 0V, T A = T MIN to T MAX , R LOAD = ∞unless otherwise noted. Typical values are at T A = +25°C.) (Note 1)Stresses 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 CC , RS+, RS- to GND..........................................-0.3V to +30V OUT to GND.............................................. -0.3V to (V CC + 0.3V)Output Short-Circuit to V CC or GND ......................... Continuous Differential Input Voltage (V RS+- V RS-).............................±0.3V Current into Any Pin.........................................................±20mAContinuous Power Dissipation (T A = +70°C)8-Pin SO (derate 5.88mW/°C above +70°C)...............471mW SOT23-6 (derate 8.7mW/°C above +70°C).................696mW Operating Temperature Range ..........................-40°C to +85°C Storage Temperature Range............................-65°C to +150°C Lead Temperature (soldering, 10s)................................+300°CMAX4173T/F/HLow-Cost, SOT23, Voltage-Output, High-Side Current-Sense Amplifier_______________________________________________________________________________________3Note 3:Total OUT Voltage Error is the sum of gain and offset voltage errors.Note 4:+6.25mV = 1/16 of +100mV full-scale voltage.Note 5:V SENSE such that output stage is in saturation.Note 6:V OS is extrapolated from the Gain Accuracy tests.Note 7:The device does not experience phase reversal when overdriven.ELECTRICAL CHARACTERISTICS (continued)(V RS+ = 0 to +28V, V CC = +3V to +28V, V SENSE = 0V, T A = T MIN to T MAX , R LOAD = ∞unless otherwise noted. Typical values are at T = +25°C.) (Note 1)M A X 4173T /F /HLow-Cost, SOT23, Voltage-Output, High-Side Current-Sense Amplifier 4_______________________________________________________________________________________370390380410400430420440010155202530SUPPLY CURRENT vs. SUPPLY VOLTAGESUPPLY VOLTAGE (V)S U P P L Y C U R R E N T (µA )200300250450400350550500150-50-510-35-202540557085SUPPLY CURRENT vs. TEMPERATURETEMPERATURE (°C)S U P P L Y C U R R E N T (µA )0.40.20.80.61.21.01.4V RS+ (V)S U P P L Y C U R R E N T (m A )-0.60-0.45-0.30-0.1500.150.300.450.60010515202530TOTAL OUTPUT ERROR vs.SUPPLY VOLTAGESUPPLY VOLTAGE (V)T O T A L O U T P U T E R R O R (%)0-1001001k10k100k1M10MPOWER-SUPPLY REJECTIONvs. FREQUENCY-80M A X 4173 t o c 07FREQUENCY (Hz)P S R (d B )-60-40-20-10-90-70-50-30-6-2-42046010155202530TOTAL OUTPUT ERROR vs. SUPPLY VOLTAGESUPPLY VOLTAGE (V)T O T A L O U T P U T E R R O R (%)-20-1213410050150200TOTAL OUTPUT ERROR vs.FULL-SCALE SENSE VOLTAGEV SENSE (mV)T O T A L O U T P U T E R R O R (%)-10-8-6-4-2024610515202530TOTAL OUTPUT ERROR MON-MODE VOLTAGECOMMON-MODE VOLTAGE (V)T O T A L O U T P U T E R R O R (%)Typical Operating Characteristics(V CC = +12V, V RS+= +12V, V SENSE = +100mV, TA = +25°C, unless otherwise noted.)-1.2-0.4-0.800.40.81.2-50-20-510-352540557085GAIN ACCURACY vs. TEMPERATURETEMPERATURE (°C)G A I N A C C U R A C Y (%)MAX4173T/F/HLow-Cost, SOT23, Voltage-Output, High-Side Current-Sense Amplifier_______________________________________________________________________________________5Typical Operating Characteristics (continued)(V CC = +12V, V RS+= +12V, V SENSE = +100mV, T A = +25°C, unless otherwise noted.)-2.0-1.0-1.50.50-0.51.51.02.0-50-510-35-202540557085TOTAL OUTPUT ERROR vs. TEMPERATURETEMPERATURE (°C)T O T A L O U T P U T E R R O R (%)2µs/divMAX4173TLARGE-SIGNAL TRANSIENT RESPONSE(V SENSE = 6mV to 100mV)IN(45mV/div)OUT (500mV/div)6mV 100mV 2V0.120VC L = 5pF2µs/div MAX4173FLARGE-SIGNAL TRANSIENT RESPONSE(V SENSE = 6mV to 100mV)IN(45mV/div)OUT (2V/div)6mV100mV 5V0.3VC L = 5pF2µs/divMAX4173HLARGE-SIGNAL TRANSIENT RESPONSE(V SENSE = 6mV to 100mV)IN(45mV/div)OUT (3V/div)6mV 100mV10V0.6VC L = 5pF2µs/divMAX4173TSMALL-SIGNAL TRANSIENT RESPONSE(V SENSE = 95mV TO 100mV)IN (5mV/div)OUT (50mV/div)95mV100mV 2.0V1.9VC L = 5pF2µs/divMAX4173FSMALL-SIGNAL TRANSIENT RESPONSE(V SENSE = 95mV TO 100mV)IN (5mV/div)OUT (100mV/div)95mV100mV 5V4.75VC L = 5pFM A X 4173T /F /HLow-Cost, SOT23, Voltage-Output, High-Side Current-Sense Amplifier 6_______________________________________________________________________________________Pin DescriptionTypical Operating Characteristics (continued)(V CC = +12V, V RS+= +12V, V SENSE = +100mV, T A = +25°C, unless otherwise noted.)2µs/divMAX4173HSMALL-SIGNAL TRANSIENT RESPONSE(V SENSE = 95mV to 100mV)IN (5mV/div)OUT (200mV/div)95mV100mV 10V9.5VC L = 5pF5µs/divSTART-UP DELAY (V CC = 0 to 4V)(V SENSE = 100mV)IN (2V/div)OUT (1V/div)0V4V2V0VM A X 4173 t o c 17MAX4173T/F/HLow-Cost, SOT23, Voltage-Output, High-Side Current-Sense Amplifier_______________________________________________________________________________________7Detailed DescriptionThe MAX4173 high-side current-sense amplifier fea-tures a 0 to +28V input common-mode range that is independent of supply voltage. This feature allows the monitoring of current out of a battery in deep discharge and also enables high-side current sensing at voltages greater than the supply voltage (V CC ).The MAX4173 operates as follows:Current from the source flows through R SENSE to the load (Figure 1). Since the internal-sense amplifier’s inverting input has high impedance, negligible current flows through RG2(neglecting the input bias current). Therefore, the sense amplifier’s inverting-input voltage equals V SOURCE - (I LOAD )(R SENSE ). The amplifier’s open-loop gain forces its noninverting input to the same voltage as the inverting input. Therefore, the drop across RG1equals (I LOAD )(R SENSE ). Since I RG1flows through RG1,I RG1= (I LOAD )(R SENSE ) / RG1. The internal current mirror multiplies I RG1by a current gain factor, β, to give I RGD = β·I RG1. Solving I RGD = β·(I LOAD )(R SENSE ) /RG1. Assuming infinite output impedance, V OUT = (I RGD )(RGD). Substituting in for I RGD and rearranging, V OUT = β·(RGD / RG1)(R SENSE ·I LOAD ). The parts gain equals β·RGD / RG1. Therefore, V OUT = (GAI N) (R SENSE )(I LOAD ), where GAIN = 20 for MAX4173T, GAIN = 50 for MAX4173F, and GAIN = 100 for MAX4173H.Set the full-scale output range by selecting R SENSE and the appropriate gain version of the MAX4173.Applications InformationRecommended Component ValuesThe MAX4173 senses a wide variety of currents with different sense resistor values. Table 1 lists common resistor values for typical operation of the MAX4173.Choosing R SENSETo measure lower currents more accurately, use a high value for R SENSE . The high value develops a higher sense voltage that reduces offset voltage errors of the internal op amp.I n applications monitoring very high currents, R SENSE must be able to dissipate the I 2R losses. If the resistor’s rated power dissipation is exceeded, its value may drift or it may fail altogether, causing a differential voltage across the terminals in excess of the absolute maxi-mum ratings.If I SENSE has a large high-frequency component, mini-mize the inductance of R SENSE . Wire-wound resistors have the highest inductance, metal-film resistors are somewhat better, and low-inductance metal-film resis-tors are best suited for these applications.Using a PCB Trace as R SENSEI f the cost of R SENSE is an issue and accuracy is not critical, use the alternative solution shown in Figure 2.This solution uses copper PC board traces to create a sense resistor. The resistivity of a 0.1-inch-wide trace of 2-ounce copper is approximately 30m Ω/ft. The resis-tance-temperature coefficient of copper is fairly high (approximately 0.4%/°C), so systems that experience a wide temperature variance must compensate for this effect. In addition, do not exceed the maximum power dissipation of the copper trace.For example, the MAX4173T (with a maximum load cur-rent of 10A and an R SENSE of 5m Ω) creates a full-scale V SENSE of 50mV that yields a maximum V OUT of 1V.R SENSE in this case requires about 2 inches of 0.1 inch-wide copper trace.Output ImpedanceThe output of the MAX4173 is a current source driving a 12k Ωresistance. Resistive loading added to OUT reduces the output gain of the MAX4173. To minimize output errors for most applications, connect OUT to a high-impedance input stage. When output buffering is required, choose an op amp with a common-mode input range and an output voltage swing that includes ground when operating with a single supply. The opFigure 1. Functional DiagramM A X 4173T /F /HLow-Cost, SOT23, Voltage-Output, High-Side Current-Sense Amplifier 8_______________________________________________________________________________________amp’s supply voltage range should be at least as high as any voltage the system may encounter.The percent error introduced by output loading iswhere R LOAD is the external load applied to OUT.Current Source CircuitFigure 3 shows a block diagram using the MAX4173with a switching regulator to make a current source.Figure 2. MAX4173 Connections Showing Use of PC Board Figure 3. Current SourceMAX4173T/F/HLow-Cost, SOT23, Voltage-Output, High-Side Current-Sense Amplifier_______________________________________________________________________________________9Pin ConfigurationsChip InformationTRANSISTOR COUNT: 187M A X 4173T /F /HLow-Cost, SOT23, Voltage-Output, High-Side Current-Sense Amplifier 10______________________________________________________________________________________Package 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 .)Low-Cost, SOT23, Voltage-Output, High-Side Current-Sense AmplifierMAX4173T/F/H Maxim cannot assume re sponsibility for use of any circuitry othe r than circuitry e ntire ly e mbodie d in a Maxim product. No circuit pate nt lice nse s 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____________________11©2004 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.Package 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 .)元器件交易网。