AD7665中文资料

REV.0InformationfurnishedbyAnalogDevicesisbelievedtobeaccurateandreliable.However,noresponsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorotherrightsofthirdpartiesthatmayresultfromitsuse.NolicenseisgrantedbyimplicationorotherwiseunderanypatentorpatentrightsofAnalogDevices.aAD7665*OneTechnologyWay,P.O.Box9106,Norwood,MA02062-9106,U.S.A.Tel:[phone]©AnalogDevices,Inc.,200116-Bit,570kSPSCMOSADCFUNCTIONALBLOCKDIAGRAMDGNDDVDDAVDDAGNDREFREFGNDSWITCHEDCAPDACCNVSTIMPULSEWARPOGND16CONTROLLOGICANDCALIBRATIONCIRCUITRYCLOCKIND(4R)4ROVDDAD7665INGNDPDRESETBYTESWAPSER/PARDATA[15:0]BUSYCSRDOB/2CSERIALPORTPARALLELINTERFACEINA(R)RINC(4R)4RINB(2R)2RFEATURESThroughput:570kSPS(WarpMode)500kSPS(NormalMode)INL:
2.5LSBMax(
0.0038%ofFullScale)16-BitResolutionwithNoMissingCodesS/(N+D):90dBTyp@180kHzTHD:–100dBTyp@180kHzAnalogInputVoltageRanges:Bipolar:
10V,
5V,
2.5VUnipolar:0Vto10V,0Vto5V,0Vto2.5VBothACandDCSpecificationsNoPipelineDelayParallel(8/16Bits)andSerial5V/3VInterfaceSingle5VSupplyOperationPowerDissipation64mWTypical15W@100SPSPower-DownMode:7WMaxPackage:48-LeadQuadFlatpack(LQFP)Pin-to-PinCompatibleUpgradeoftheAD7664/AD7663APPLICATIONSDataAcquisitionCommunicationInstrumentationSpectrumAnalysisMedicalInstrumentsProcessControlGENERALDESCRIPTIONTheAD7665isa16-bit,570kSPS,chargeredistributionSAR,analog-to-digitalconverterthatoperatesfromasingle5Vpowersupply.Itcontainsahigh-speed16-bitsamplingADC,aresistorinputscalerwhichallowsvariousinputranges,aninternalcon-versionclock,errorcorrectioncircuits,andbothserialandparallelsysteminterfaceports.TheAD7665ishardwarefactory-calibratedandiscomprehen-sivelytestedtoensuresuchacparametersassignal-to-noiseratio(SNR)andtotalharmonicdistortion(THD),inadditiontothemoretraditionaldcparametersofgain,offset,andlinearity.Itfeaturesaveryhighsamplingratemode(Warp)and,forasynchronousconversionrateapplications,afastmode(Nor-mal)and,forlowpowerapplications,areducedpowermode(Impulse)wherethepowerisscaledwiththethroughput.ItisfabricatedusingAnalogDevices’high-performance,0.6micronCMOSprocessandisavailableina48-leadLQFPwithopera-tionspecifiedfrom–40°Cto+85°C.*Patentpending.PRODUCTHIGHLIGHTS1.FastThroughputTheAD7665isaveryhighspeed(570kSPSinWarpmodeand500kSPSinNormalmode),chargeredistribution,16-bitSARADC.2.SingleSupplyOperationTheAD7665operatesfromasingle5Vsupply,dissipatesonly64mWtypical,evenlowerwhenareducedthroughputisusedwiththereducedpowermode(Impulse)andapower-downmode.3.SuperiorINLTheAD7665hasamaximumintegralnonlinearityof2.5LSBwithnomissing16-bitcode.4.SerialorParallelInterfaceVersatileparallel(8or16bits)or2-wireserialinterfacearrangementcompatiblewithboth3Vor5Vlogic.REV.0–2–AD7665–SPECIFICATIONSParameterConditionsMinTypMaxUnitRESOLUTION16BitsANALOGINPUTVoltageRangeVIND–VINGND±4REF,0Vto4REF,±2REF(SeeTableI)Common-ModeInputVoltageVINGND–0.1+0.5VAnalogInputCMRRfIN=180kHz62dBInputImpedanceSeeTableITHROUGHPUTSPEEDCompleteCycleInWarpMode1.75µsThroughputRateInWarpMode1570kSPSTimeBetweenConversionsInWarpMode1msCompleteCycleInNormalMode2µsThroughputRateInNormalMode0500kSPSCompleteCycleInImpulseMode2.25µsThroughputRateInImpulseMode0444kSPSDCACCURACYIntegralLinearityError–2.5+2.5LSB1NoMissingCodes16BitsTransitionNoise0.7LSBBipolarZeroError2,TMINtoTMAX±5VRange,Normalor–25+25LSBImpulseModesOtherRangeorMode–0.06+0.06%ofFSRBipolarFull-ScaleError2,TMINtoTMAX–0.25+0.25%ofFSRUnipolarZeroError2,TMINtoTMAX–0.18+0.18%ofFSRUnipolarFull-ScaleError2,TMINtoTMAX–0.38+0.38%ofFSRPowerSupplySensitivityAVDD=5V±5%±9.5LSBACACCURACYSignal-to-NoisefIN=10kHz8990dB3fIN=180kHz90dBSpuriousFreeDynamicRangefIN=180kHz100dBTotalHarmonicDistortionfIN=180kHz–100dBSignal-to-(Noise+Distortion)fIN=10kHz88.590dBfIN=180kHz,–60dBInput30dB–3dBInputBandwidth3.6MHzSAMPLINGDYNAMICSApertureDelay2nsApertureJitter5psrmsTransientResponseFull-ScaleStep1µsREFERENCEExternalReferenceVoltageRange2.32.52.7VExternalReferenceCurrentDrain570kSPSThroughput114µADIGITALINPUTSLogicLevelsVIL–0.3+0.8VVIH+2.0DVDD+0.3VIIL–1+1µAIIH–1+1µADIGITALOUTPUTSDataFormatParallelorSerial16-BitPipelineDelayConversionResultsAvailableImmediatelyafterCompletedConversionVOLISINK=1.6mA0.4VVOHISOURCE=–570µAOVDD–0.6VPOWERSUPPLIESSpecifiedPerformanceAVDD4.7555.25VDVDD4.7555.25VOVDD2.75.25VOperatingCurrent4570kSPSThroughputAVDD14mADVDD54.5mAOVDD520µA(–40Cto+85C,AVDD=DVDD=5V,OVDD=2.7Vto5.25V,unlessotherwisenoted.)REV.0–3–AD7665ParameterConditionsMinTypMaxUnitPOWERSUPPLIES(Continued)PowerDissipation5,6444kSPSThroughput76474mW100SPSThroughput715µW570kSPSThroughput493107mWInPower-DownMode87µWTEMPERATURERANGE9SpecifiedPerformanceTMINtoTMAX–40+85°CNOTES1LSBmeansLeastSignificantBit.Withthe±5Vinputrange,oneLSBis152.588µV.2SeeDefinitionofSpecificationssection.Thesespecificationsdonotincludetheerrorcontributionfromtheexternalreference.3AllspecificationsindBarereferredtoafull-scaleinputFS.Testedwithaninputsignalat0.5dBbelowfullscaleunlessotherwisespecified.4Inwarpmode.5Testedinparallelreadingmode.6Testedwiththe0Vto5VrangeandVIN–VINGND=0V.See