ADR434BR中文资料

UltralowNoiseXFET®VoltageReferenceswithCurrentSinkandSourceCapabilityADR430/ADR431/ADR433/ADR434/ADR435/ADR439Rev.BInformationfurnishedbyAnalogDevicesisbelievedtobeaccurateandreliable.However,noresponsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorotherrightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.NolicenseisgrantedbyimplicationorotherwiseunderanypatentorpatentrightsofAnalogDevices.Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.OneTechnologyWay,P.O.Box9106,Norwood,MA02062-9106,U.S.A.Tel:[phone]©2004AnalogDevices,Inc.Allrightsreserved.FEATURESLownoise(0.1Hzto10Hz):3.5µVp-p@2.5VoutputNoexternalcapacitorrequiredLowtemperaturecoefficientAGrade:10ppm/°CmaxBGrade:3ppm/°CmaxLoadregulation:15ppm/mALineregulation:20ppm/VWideoperatingrangeADR430:4.1Vto18VADR431:4.5Vto18VADR433:5.0Vto18VADR434:6.1Vto18VADR435:7.0Vto18VADR439:6.5Vto18VHighoutputcurrent:+30mA/−20mAWidetemperaturerange:−40°Cto+125°CAPPLICATIONSPrecisiondataacquisitionsystemsHighresolutiondataconvertersMedicalinstrumentsIndustrialprocesscontrolsystemsOpticalcontrolcircuitsPrecisioninstrumentsPINCONFIGURATIONSNC=NOCONNECTADR43xTOPVIEW(NottoScale)TP1VIN2NC3GND4TPNCVOUTTRIM876504500-0-001Figure1.8-LeadMSOP(RMSuffix)NC=NOCONNECTADR43xTOPVIEW(NottoScale)TP1VIN2NC3GND4TPNCVOUTTRIM876504500-0-041Figure2.8-LeadSOIC(RSuffix)GENERALDESCRIPTIONTheADR43xseriesisafamilyofXFETvoltagereferencesfeaturinglownoise,highaccuracy,andlowtemperaturedriftperformance.UsingADI’spatentedtemperaturedriftcurvaturecorrectionandXFET(eXtraimplantedjunctionFET)technology,theADR43x’svoltagechangeversustemperaturenonlinearityisminimized.TheXFETreferencesoperateatlowercurrent(800µA)andsupplyheadroom(2V)thanburied-Zenerreferences.Buried-Zenerreferencesrequiremorethan5Vheadroomforoperations.TheADR43xXFETreferencesaretheonlylownoisesolutionsfor5Vsystems.TheADR43xserieshasthecapabilitytosourceupto30mAandsinkupto20mAofoutputcurrent.ItalsocomeswithaTRIMterminaltoadjusttheoutputvoltageovera0.5%rangewithoutcompromisingperformance.TheADR43xisavailableinthe8-leadminiSOICand8-leadSOICpackages.Allversionsarespecifiedovertheextendedindustrialtempera-turerange(−40°Cto+125°C).Table1.SelectionGuideModelVOUT(V)Accuracy(mV)TemperatureCoefficient(ppm/°C)ADR430B2.048±13ADR430A2.048±310ADR431B2.500±13ADR431A2.500±310ADR433B3.000±1.43ADR433A3.000±410ADR434B4.096±1.53ADR434A4.096±510ADR435B5.000±23ADR435A5.000±610ADR439B4.500±23ADR439A4.500±5.410ADR430/ADR431/ADR433/ADR434/ADR435/ADR439Rev.B|Page2of24TABLEOFCONTENTSSpecifications.....................................................................................3ADR430ElectricalCharacteristics.............................................3ADR431ElectricalCharacteristics.............................................4ADR433ElectricalCharacteristics.............................................5ADR434ElectricalCharacteristics.............................................6ADR435ElectricalCharacteristics.............................................7ADR439ElectricalCharacteristics.............................................8AbsoluteMaximumRatings............................................................9PackageType.................................................................................9ESDCaution..................................................................................9TypicalPerformanceCharacteristics...........................................10TheoryofOperation......................................................................15BasicVoltageReferenceConnections......................................15NoisePerformance.....................................................................15Turn-OnTime............................................................................15Applications.....................................................................................16OutputAdjustment....................................................................16ReferenceforConvertersinOpticalNetworkControlCircuits.........................................................................................16NegativePrecisionReferencewithoutPrecisionResistors...16HighVoltageFloatingCurrentSource....................................17KelvinConnections....................................................................17DualPolarityReferences...........................................................17ProgrammableCurrentSource................................................18ProgrammableDACReferenceVoltage..................................18PrecisionVoltageReferenceforDataConverters..................19PrecisionBoostedOutputRegulator.......................................19OutlineDimensions.......................................................................20OrderingGuide..........................................................................21REVISIONHISTORY9/04—DataSheetChangedfromRev.AtoRev.BAddedNewGrade.............................