AD823_07中文资料

Dual,16MHz,Rail-to-RailFETInputAmplifierAD823Rev.BInformationfurnishedbyAnalogDevicesisbelievedtobeaccurateandreliable.However,noresponsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorotherrightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.NolicenseisgrantedbyimplicationorotherwiseunderanypatentorpatentrightsofAnalogDevices.Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.OneTechnologyWay,P.O.Box9106,Norwood,MA02062-9106,U.S.A.Tel:[phone]©1995–2007AnalogDevices,Inc.Allrightsreserved.FEATURESSingle-supplyoperationOutputswingsrail-to-railInputvoltagerangeextendsbelowgroundSingle-supplycapabilityfrom3Vto36VHighloaddriveCapacitiveloaddriveof500pF,G=+1Outputcurrentof15mA,0.5VfromsuppliesExcellentacperformanceon2.6mA/amplifier−3dBbandwidthof16MHz,G=+1350nssettlingtimeto0.01%(2Vstep)Slewrateof22V/μsGooddcperformance800μVmaximuminputoffsetvoltage2μV/°Coffsetvoltagedrift25pAmaximuminputbiascurrentLowdistortion:−108dBcworstharmonic@20kHzLownoise:16nV/√Hz@10kHzNophaseinversionwithinputstothesupplyrailsAPPLICATIONSBattery-poweredprecisioninstrumentationPhotodiodepreampsActivefilters12-bitto16-bitdataacquisitionsystemsMedicalinstrumentationGENERALDESCRIPTIONTheAD823isadualprecision,16MHz,JFETinputopampthatcanoperatefromasinglesupplyof3.0Vto36Vorfromdualsuppliesof±1.5Vto±18V.Ithastruesingle-supplycapabilitywithaninputvoltagerangeextendingbelowgroundinsingle-supplymode.Outputvoltageswingextendstowithin50mVofeachrailforIOUT≤100μA,providingoutstandingoutputdynamicrange.Anoffsetvoltageof800μVmaximum,anoffsetvoltagedriftof2μV/°C,inputbiascurrentsbelow25pA,andlowinputvoltagenoiseprovidedcprecisionwithsourceimpedancesuptoaGigaohm.Itprovides16MHz,−3dBbandwidth,−108dBTHD@20kHz,anda22V/μsslewratewithalowsupplycurrentof2.6mAperamplifier.TheAD823drivesupto500pFofdirectcapacitiveloadasafollowerandprovidesanoutputcurrentof15mA,0.5Vfromthesupplyrails.Thisallowstheamplifiertohandleawiderangeofloadconditions.CONNECTIONDIAGRAMAD823OUT1+IN2–IN2OUT2+VS–IN1+IN1–VS1234876500901-001Figure1.8-LeadPDIPandSOIC3VGND00901-002RL=100kΩCL=50pF+VS=+3VG=+1500mV200µsFigure2.OutputSwing,+VS=+3V,G=+1FREQUENCY(Hz)–8OUTPUT(dB)1k–6–72110k100k1M+VS=+5VG=[phone]M00901-003Figure3.SmallSignalBandwidth,G=+1Thiscombinationofacanddcperformance,plustheoutstandingloaddrivecapability,resultsinanexceptionallyversatileampli-fierforapplicationssuchasA/Ddrivers,highspeedactivefilters,andotherlowvoltage,highdynamicrangesystems.TheAD823isavailableovertheindustrialtemperaturerangeof−40°Cto+85°Candisofferedinboth8-leadPDIPand8-leadSOICpackages.AD823Rev.B|Page2of20TABLEOFCONTENTSFeatures..............................................................................................1Applications.......................................................................................1GeneralDescription.........................................................................1ConnectionDiagram.......................................................................1RevisionHistory...............................................................................2Specifications.....................................................................................3AbsoluteMaximumRatings............................................................6ThermalResistance......................................................................6ESDCaution..................................................................................6TypicalPerformanceCharacteristics..............................................7TheoryofOperation......................................................................13OutputImpedance.....................................................................14ApplicationNotes...........................................................................15InputCharacteristics..................................................................15OutputCharacteristics...............................................................15OutlineDimensions.......................................................................18OrderingGuide..........................................................................19REVISIONHISTORY2/07—Rev.AtoRev.BUpdatedFormat..................................................................UniversalChangestoDCPerformance..........................................................5UpdatedOutlineDimensions.......................................................18ChangestoOrderingGuide.........................................................195/04—Rev.0toRev.AChangestoSpecifications................................................................2ChangestoOrderingGuide.........................................................17UpdatedOutlineDimensions.......................................................175/95—Revision0:InitialVersionAD823Rev.B|Page3of20SPECIFICATIONSAtTA=25°C,+VS=+5V,RL=2kΩto2.5V,unlessotherwisenoted.Table1.ParameterConditionsMinT