小数合成器HMC838

7HMC838LP6CEv02.1010Functional DiagramFeatures• RF Bandwidth:795 - 945, 1590 - 1890, 3180 - 3780 MHz• Ultra Low Phase Noise-111 dBc/Hz in Band Typ.• Figure of Merit (FOM) -227 dBc/Hz• < 180 fs RMS Jitter• 24-bit Step Size, Resolution 3 Hz typ• Exact Frequency Mode• Built-in Digital Self Test• 40 Lead 6x6 mm SMT Package: 36 mm2Typical Applications• Cellular/4G Infrastructure• Repeaters and Femtocells• Communications Test Equipment• CATV Equipment• Phased Array Applications• DDS Replacement• Very High Data Rate RadiosFRACTIONAL-N SYNTHESIZER WITH INTEGRATED VCO795 - 945, 1590 - 1890, 3180 - 3780 MHzP L L S w / I N T E G R A T E D V C O - S M T7General DescriptionThe HMC838LP6CE is a fully functioned Fractional-N Phase-Locked-Loop (PLL) Frequency Synthesizer with an Integrated Voltage Controlled Oscillator (VCO). The synthesizer consists of an integrated low noise VCO with a tri-band output, an autocalibration subsystem for low voltage VCO tuning, a very low noise digital Phase Detector (PD), a precision controlled charge pump, a low noise reference path divider and a fractional divider.The fractional synthesizer features an advanced delta-sigma modulator design that allows both ultra-fine step sizes and low spurious products. The phase detector (PD) features cycle slip prevention (CSP) technology to allow fas- ter frequency hopping times. Ultra low in-close phase noise and low spurious also allows wider loop bandwidths for faster frequency hopping and low micro-phonics.For theory of operation and register map refer to the “PLLs w/ Integrated VCOs - RF VCOs Operating Guide ”. To view the Operating Guide, please visit and choose HMC838LP6CE from the “Search by Part Number” pull down menu.795 - 945, 1590 - 1890, 3180 - 3780 MHzElectrical Specifications, T A = +25° C, VPPCP, VDDCP, VCC1, VCC2 = 5V ±4%;RVDD, AVDD, DVDD3V, VCCPD, VCCHF, VCCPS = 3.3V ±6% GNDCP = GNDLS = Ground Paddle = 0V, 50 MHz Reference Unless Otherwise Noted7795 - 945, 1590 - 1890, 3180 - 3780 MHz Electrical Specifications (Continued)Note 1: This maximum phase detector frequency can only be achieved if the minimum N value is respected. eg. In the case of fractional feedback mode, the maximum PFD rate = fvco/20 or 100 MHz, whichever is less.P L L S w / I N T E G R A T E D V C O - S M T7Electrical Specifications (Continued)795 - 945, 1590 - 1890, 3180 - 3780 MHz7795 - 945, 1590 - 1890, 3180 - 3780 MHz[1] Fractional Mode, 50 MHz Crystal, R=1Typical Closed Loop Fractional Phase Noise [1]Free Running Phase Noise Typical Tuning Curves vs. Switch PositionTypical VCO Tuning Voltage After CalibrationFree Running VCO Phase Noise Over TemperatureClosed Loop Integer Phase NoiseFREQUENCY OFFSET(Hz)P H A S E N O I S E (d B c /H z )-170-150-130-110-90-701000104105106107108FREQUENCY OFFSET (Hz)P H A S E N O I S E (d B c /H z )835MHz1671MHz3377MHz -180-160-140-120-100-80-60-40-200103104105106107108OFFSET FREQUENCY (Hz)P H A S E N O I S E (d B c /H z )835MHz3378MHz1670MHz900950100010501100012345TUNING VOLTAGE (V)K V C O (M H z /V )n0n2n4n6n8n10n12n14n16n18n20n22n24n26n31fmax fmin fmaxn3001234515001600170018001900VCO FREQUENCYT U N E V O L T A G E A F T E R C A L I B R A T I O N (V )1531fmin fmax -170-160-150-140-130-120-110+27C +85C -40C130013501400145015001550160016501700P H A S E N O I S E (d B c /H z )FREQUENCY (MHz)1 MHz Offset100 kHz Offset10 MHz OffsetP L L S w / I N T E G R A T E D V C O - S M T7Typical VCO Sensitivity vs. Cap @ Fo VoltageFigure of Merit795 - 945, 1590 - 1890, 3180 - 3780 MHzTypical Output Power - Narrow Band MatchTypical Spurious @ 200 kHz from Integer Boundary0102030405060012345TUNING VOLTAGE (V)K V C O (M H z /V )+25C Typ Operating RangeTuning Cap 0, 1929MHz at 2VTuning Cap 15, 1708MHz at 2V Tuning Cap 31, 1540MHz at 2V-160-140-120-100-80-60-40-2001000104105106107108FREQUENCY OFFSET (Hz)P H A S E N O I S E (d B c /H z )400kHz, -80Bc200kHz, -75dBc 1700.200MHz50MHz PFD Fractional Mode200kHz Offset from Integer Boundary 40kHz Loop Bandwidth50MHz, -98dBc-240-230-220-210-2001001000104105106N O R M A L I Z E D P H A S E N O I S E (d B c /H z )FREQUENCY OFFSET (Hz)FOM FloorFOM 1/f NoiseTyp FOM vs Offset-10-5051015208001000200030004000OUTPUT FREQUENCY(MHz)O U T P U T P O W E R (d B m )7795 - 945, 1590 - 1890, 3180 - 3780 MHzPin Descriptions[1] For doubler mode of operation, pin 28 (RF_N) and pin 29 (RF_P) outputs must be shorted together.P L L S w / I N T E G R A T E D V C O - S M T7Outline DrawingPackage InformationNOTES:1. LEADFRAME MATERIAL: COPPER ALLOY2. DIMENSIONS ARE IN INCHES [MILLIMETERS].3. LEAD SPACING TOLERANCE IS NON-CUMULATIVE4. PAD BURR LENGTH SHALL BE 0.15mm MAXIMUM. PAD BURR HEIGHT SHALL BE 0.05mm MAXIMUM.5. PACKAGE WARP SHALL NOT EXCEED 0.05mm.6. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED TO PCB RF GROUND.7. REFER TO HITTITE APPLICATION NOTE FORSUGGESTED PCB LAND PATTERN.Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.795 - 945, 1590 - 1890, 3180 - 3780 MHz7795 - 945, 1590 - 1890, 3180 - 3780 MHz Evaluation PCB, fo & fo/2 ModesThe circuit board used in the application should use RF circuit design techniques. Signal lines should have50 Ohm impedance while the package ground leads and exposed paddle should be connected directlyto the ground plane similar to that shown. A sufficient number of via holes should be used to connect thetop and bottom ground planes. The evaluation circuit board shown is available from Hittite upon request.Evaluation PCB SchematicTo view this Evaluation PCB Schematic please visit and choose HMC838LP6CE from the “Search by Part Number” pull down menu to view the product splash page.P L L S w / I N T E G R A T E D V C O - S M T7[1] Reference this number when ordering complete evaluation PCB [2] Circuit Board Material: Rogers 4350 or Arlon 25FR and FR4List of Materials for[1]795 - 945, 1590 - 1890, 3180 - 3780 MHz7795 - 945, 1590 - 1890, 3180 - 3780 MHz Evaluation PCB, 2xfo ModeThe circuit board used in the application should use RF circuit design techniques. Signal lines should have50 Ohm impedance while the package ground leads and exposed paddle should be connected directlyto the ground plane similar to that shown. A sufficient number of via holes should be used to connect thetop and bottom ground planes. The evaluation circuit board shown is available from Hittite upon request.Evaluation PCB SchematicTo view this Evaluation PCB Schematic please visit and choose HMC838LP6CE from the “Search by Part Number” pull down menu to view the product splash page.P L L S w / I N T E G R A T E D V C O - S M T7List of Materials for[1]795 - 945, 1590 - 1890, 3180 - 3780 MHz[1] Reference this number when ordering complete evaluation PCB [2] Circuit Board Material: Rogers 4350 or Arlon 25FR and FR4。