dac902-12位并口-165M-+5V-

DAC902DAC90212-Bit,165MSPSDIGITAL-TO-ANALOGCONVERTERFEATURESSINGLE+5VOR+3VOPERATIONHIGHSFDR:5MHzOutputat100MSPS:67dBcLOWGLITCH:3pV-sLOWPOWER:170mWat+5VINTERNALREFERENCE:OptionalExt.ReferenceAdjustableFull-ScaleRangeMultiplyingOptionAPPLICATIONSCOMMUNICATIONTRANSMITCHANNELS:WLL,CellularBaseStationDigitalMicrowaveLinksCableModemsWAVEFORMGENERATION:DirectDigitalSynthesis(DDS)ArbitraryWaveformGeneration(ARB)MEDICAL/ULTRASOUNDHIGH-SPEEDINSTRUMENTATIONANDCON-TROLVIDEO,DIGITALTVDESCRIPTIONTheDAC902isahigh-speed,Digital-to-AnalogConverter(DAC)offeringa12-bitresolutionoptionwithintheSpeedPlusFamilyofhigh-performanceconverters.Featuringpincompatibilityamongfamilymembers,theDAC908,DAC900,andDAC904provideacomponentselectionoptiontoan8-,10-,and14-bitresolution,respectively.AllmodelswithinthisfamilyofDACssupportupdateratesinexcessof165MSPSwithexcellentdynamicperformance,andareespeciallysuitedtofulfillthedemandsofavarietyofapplications.TheadvancedsegmentationarchitectureoftheDAC902isopti-mizedtoprovideahighSpurious-FreeDynamicRange(SFDR)forsingle-tone,aswellasformulti-tonesignals—essentialwhenusedforthetransmitsignalpathofcommunicationsystems.TheDAC902hasahighimpedance(200kΩ)currentoutputwithanominalrangeof20mAandanoutputcomplianceofupto1.25V.Thedifferentialoutputsallowforbothadifferentialorsingle-endedanalogsignalinterface.Theclosematchingofthecurrentoutputsensuressuperiordynamicperformanceinthedifferentialconfiguration,whichcanbeimplementedwithatransformer.UtilizingasmallgeometryCMOSprocess,themonolithicDAC902canbeoperatedonawide,single-supplyrangeof+2.7Vto+5.5V.Itslowpowerconsumptionallowsforuseinportableandbattery-operatedsystems.Furtheroptimizationcanberealizedbyloweringtheoutputcurrentwiththeadjustablefull-scaleoption.FornoncontinuousoperationoftheDAC902,apower-downmoderesultsinonly45mWofstandbypower.TheDAC902comeswithanintegrated1.24Vbandgapreferenceandedge-triggeredinputlatches,offeringacompleteconvertersolution.Both+3Vand+5VCMOSlogicfamiliescanbeinter-facedtotheDAC902.ThereferencestructureoftheDAC902allowsforadditionalflexibilitybyutilizingtheon-chipreference,orapplyinganexter-nalreference.Thefull-scaleoutputcurrentcanbeadjustedoveraspanof2mAto20mA,withoneexternalresistor,whilemaintain-ingthespecifieddynamicperformance.TheDAC902isavailableintheSO-28andTSSOP-28packages.CurrentSourcesLSBSwitchesSegmentedSwitches+1.24VRef.Latches12-BitDataInputD11...D0DAC902FSABW+VD+VAAGNDCLKDGNDREFININT/EXTIOUTIOUTBYPPDDAC902SBAS094B–MAY2002©2002,TexasInstrumentsIncorporatedPleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.TMPRODUCTIONDATAinformationiscurrentasofpublicationdate.ProductsconformtospecificationsperthetermsofTexasInstrumentsstandardwarranty.Productionprocessingdoesnotnecessarilyincludetestingofallparameters.DAC9022SBAS094BELECTRICALCHARACTERISTICSAtTA=fullspecifiedtemperaturerange,+VA=+5V,+VD=+5V,differentialtransformercoupledoutput,50Ωdoublyterminated,unlessotherwisespecified.DAC902U/EPARAMETERCONDITIONSMINTYPMAXUNITSRESOLUTION12BitsOUTPUTUPDATERATE2.7Vto3.3V125165MSPSOutputUpdateRate(fCLOCK)4.5Vto5.5V165200MSPSFullSpecifiedTemperatureRange,OperatingAmbient,TA–40+85°CSTATICACCURACY(1)TA=+25°CDifferentialNonlinearity(DNL)fCLOCK=25MSPS,fOUT=1.0MHz–1.75±0.5+1.75LSBIntegralNonlinearity(INL)–2.5±1.0+2.5LSBDYNAMICPERFORMANCETA=+25°CSpurious-FreeDynamicRange(SFDR)ToNyquistfOUT=1MHz,fCLOCK=25MSPS7177dBcfOUT=2.1MHz,fCLOCK=50MSPS75dBcfOUT=5.04MHz,fCLOCK=50MSPS68dBcfOUT=5.04MHz,fCLOCK=100MSPS67dBcfOUT=20.2MHz,fCLOCK=100MSPS61dBcfOUT=25.3MHz,fCLOCK=125MSPS61dBcfOUT=41.5MHz,fCLOCK=125MSPS57dBcfOUT=27.4MHz,fCLOCK=165MSPS60dBcfOUT=54.8MHz,fCLOCK=165MSPS53dBcSpurious-FreeDynamicRangewithinaWindowfOUT=5.04MHz,fCLOCK=50MSPS2MHzSpan80dBcfOUT=5.04MHz,fCLOCK=100MSPS4MHzSpan80dBcTotalHarmonicDistortion(THD)fOUT=2.1MHz,fCLOCK=50MSPS–74dBcfOUT=2.1MHz,fCLOCK=125MSPS–75dBcTwoTonefOUT1=13.5MHz,fOUT2=14.5MHz,fCLOCK=100MSPS64dBcABSOLUTEMAXIMUMRATINGSPACKAGESPECIFIEDDRAWINGTEMPERATUREPACKAGEORDERINGTRANSPORTPRODUCTPACKAGENUMBERRANGEMARKINGNUMBER(1)MEDIADAC902USO-28217–40°Cto+85°CDAC902UDAC902URailsDAC902U/1KTapeandReelDAC902ETSSOP-28360–40°Cto+85°CDAC902EDAC902ERailsDAC902E/2K5TapeandReelNOTE:(1)Modelswithaslash(/)areavailableonlyinTapeandReelinthequantitiesindicated(e.g.,/2K5indicates2500devicesperreel).Ordering2500piecesof“DAC902E/2K5”willgetasingle2500-pieceTapeandReel.PACKAGE/ORDERINGINFORMATION+VAtoAGND........................................................................–0.3Vto+6V+VDtoDGND........................................................................–0.3Vto+6VAGNDtoDGND.................................................................–0.3Vto+0.3V+VAto+VD...............................................................................–6Vto+6VCLK,PDtoDGND.....................................................–0.3VtoVD+0.3VD0-D11toDGND..................................