INA270AQDRQ1;INA271AQDRQ1;中文规格书,Datasheet资料-USB迷|专注于互联网分享

2024年2月19日发(作者：湛小楠)

INA270-Q1,S401B–JULY2007–REVISEDFEBRUARY2010VOLTAGE-OUTPUTUNIDIRECTIONAL-MEASUREMENTCURRENT-SHUNTMONITORSCheckforSamples:INA270-Q1,INA271-Q1FEATURESQualifiedforAutomotiveApplicationsWideCommon-ModeRange:–16Vto80VCMRR:120dBAccuracy:–±2.5-mVOffset(Max)–±1%GainError(Max)–20-mV/°COffsetDrift(Max)–55-ppm/°CGainDrift(Max)Bandwidth:Upto130kHzTwoTransferFunctionsAvailable:–14V/V(INA270)–20V/V(INA271)QuiescentCurrent:900mA(Max)PowerSupply:2.7Vto18VProvisionforFilteringAPPLICATIONS•••••••PowerManagementAutomotiveTelecomEquipmentNotebookComputersBatteryChargersCellPhonesWeldingEquipmentD PACKAGE(TOPVIEW)••••••IN–GNDPRE OUTBUF IN12348765IN+NCV+OUT•••NC – No internal connectionDESCRIPTION/ORDERINGINFORMATIONTheINA270andINA271familyofcurrent-shuntmonitorswithvoltageoutputcansensevoltagedropsacrosscurrentshuntsatcommon-modevoltagesfrom–16Vto80V,270andINA271areavailablewithtwooutputvoltagescales:14V/Vand20V/270andINA271operatefromasingle2.7-Vto18-Vsupply,especifiedovertheextendedoperatingtemperaturerangeof–40°Cto125°NGINFORMATION(1)TA–40°Cto125°C(1)(2)GAIN1420SOIC–DPACKAGE(2)Reelof2500ORDERABLEPARTNUMBERINA270AQDRQ1INA271AQDRQ1TOP-SIDEMARKINGINA270INA271Forthemostcurrentpackageandorderinginformation,seethePackageOptionAddendumattheendofthisdocument,edrawings,thermaldata,/beawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexasInstrumentssemicondutsconformtght©2007–2010,TexasInstrumentsIncorporated/

INA270-Q1,INA271-Q1SBOS401B–JULY2007–nstrumentsrecommeageionintegratedcircuitsmaybemoresusceptibletodamagebecauseverysmallparametrONALBLOCKDIAGRAM−16V to +80VSupplyRLoadSingle-Pole FilterCapacitor+2.7V to +18VIN+5 kWIN–5 kWPRE OUTBUF INV+0.01 µF0.1 µFA1OUTA296 kWRINA270GNDABSOLUTEMAXIMUMRATINGS(1)overoperatingfree-airtemperaturerange(unlessotherwisenoted)VALUEVSSupplyvoltageDifferentialanaloginputvoltagerange(VIN+–VIN–)Common-modeanaloginputvoltagerangeVOIIqJATJTATstgESDAnalogoutputvoltagerange(OUTandPREOUT)Inputcurrent(anypin)Packagethermalimpedance(2)MaximumjunctiontemperatureOperatingfree-airtemperaturerangeStoragetemperaturerangeHuman-BodyModelHBM)ElectrostaticdischargeratingMachineModel(MM)Charged-DeviceModel(CDM)(1)(2)(3)(3)18V–18Vto18V–16Vto80V(GND–0.3)Vto(V++0.3)V5mA97.1°C/W150°C–40to125°C–65to150°C2000V100V1000VStressesbeyondthoselistedunder"absolutemaximumratings"restressratingsonly,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunder"recommendedoperatingconditions"retoabsolute-maximpowerdissipationisafunctionofTJ(max),qJA,imumallowablepowerdissipationatanyallowableambienttemperatureisPD=(TJ(max)–TA)/ingattheabsolutemaximumTJof150°kagethermalimpedanceiscalculatedinaccordancewithJESD51-7.2SubmitDocumentationFeedbackCopyright©2007–2010,TexasInstrumentsIncorporatedProductFolderLink(s):INA270-Q1INA271-Q1/

INA270-Q1,S401B–JULY2007–REVISEDFEBRUARY2010RECOMMENDEDOPERATINGCONDITIONSMINVSTASupplyvoltageOperatingfree-airtemperature2.7–40MAX18125UNITV°CELECTRICALCHARACTERISTICSVS=5V,VCM=12V,VSENSE=100mV,PREOUTconnectedtoBUFIN(unlessotherwisenoted)PARAMETERInputVSENSEVCMCMRRVOSΔVOS/ΔTPSRIIBZOFull-scaleinputvoltageCommon-modeinputvoltageCommon-moderejectionOffsetvoltage,RTI(2)InputoffsetvoltagetemperaturecoefficientOffsetvoltagepower-supplyrejectionInputbiascurrentOutputimpedance(3)BufferinputbiascurrentBufferinputbiascurrenttemperaturecoefficientOutput(VSENSE≥20mV)(4)GGBUFGainOutputbuffergainTotalgainerrorTotalgainerrortemperaturecoefficientTotaloutputerror(5)NonlinearityerrorZOOutputimpedanceMaximumcapacitiveloadVoltageOutput(6)SwingtoV+power-supplyrailSwingtoGND(1)(2)(3)(4)(5)(6)RL=10kΩtoGNDRL=10kΩtoGNDFullrangeFullrangeV+–0.05VGND+0.003V+–0.2VGND+0.05VVVSENSE=20mVto100mVOUTpinNosustainedoscillationVSENSE=20mVto100mVINA270INA27125°C25°C25°CFullrangeFullrange25°CFullrange25°C25°C25°C±0.75±1±0.0021.51014202±0.2±1±2V/VV/V%VS=2.7Vto18V,VCM=18VIN–pinPREOUTpinVIN+=–16Vto80VVIN+=12Vto80VVSENSE=VIN++VIN–25°CFullrange25°CFullrange25°CFullrangeFullrangeFullrangeFullrange25°C25°C25°C2.55±896–50±0.3–168±0.52.5±320100±160.15(VS–0.2)/Gain80VVdBmVmV/°CmV/VmAkΩnAnA/°CTESTCONDITIONSTA(1)MINTYPMAXUNIT50ppm/°C±2.2±3%%ΩnFFullrangeis–40°Cto125°=referredtoinputInitialresistorvariationis±30%withanadditional–2200-ppm/°putbehaviorwhenVSENSE<20mV,seeApplicaicalCharacteristicscurveOutputSwingvsOutputCurrentandAccuracyVariationsasaResultght©2007–2010,TexasInstrumentsIncorporatedSubmitDocumentationFeedback3ProductFolderLink(s):INA270-Q1INA271-Q1/

INA270-Q1,INA271-Q1SBOS401B–JULY2007–CTRICALCHARACTERISTICS(continued)VS=5V,VCM=12V,VSENSE=100mV,PREOUTconnectedtoBUFIN(unlessotherwisenoted)PARAMETERFrequencyResponseBWfmSRtsBandwidthPhasemarginSlewrateSettlingtime(1%)VSENSE=10mVto100mV,CL=5pFCL=5pFCL<10nF25°C25°C25°C25°C1304012kHz°V/msmsTESTCONDITIONSTA(1)MINTYPMAXUNITNoise,RTI(7)VnVoltagenoisedensityVOUT=2VVSENSE=0V25°C25°CFullrange40nV/√HzPowerSupplyIQ(7)QuiescentcurrentRTI=referredtoinputmA4SubmitDocumentationFeedbackCopyright©2007–2010,TexasInstrumentsIncorporatedProductFolderLink(s):INA270-Q1INA271-Q1/

INA270-Q1,S401B–JULY2007–REVISEDFEBRUARY2010TYPICALCHARACTERISTICSTA=25°C,VS=12V,VCM=12V,VSENSE=100mV(unlessotherwisenoted)GAINvsFREQUENCY454035CLOAD=1000pF454035GAINvsFREQUENCYCLOAD=0pFGain(dB)Gain(dB)3kG=20G=0G=20G=14100kFrequency(Hz)GAINPLOT1M510k100kFrequency(Hz)COMMON-MODE AND POWER-SUPPLY REJECTIONvs FREQUENCY1401301M20181614VS=18VCommon-ModeandPower-SupplyRejection(dB)121kCMRR20V/VVOUT(V)V/VPSR1500130010k100kVDIFFERENTIAL(mV)TOTALOUTPUTERRORvsVSENSE4.00.10 09.0.08Frequency(Hz)OUTPUT ERROR vs COMMON-MODEVOLTAGETotalOutputError(%erroroftheidealoutputvalue)3.53.02.52.01.51.00.50450500VSENSE(mV)Output

Error

INA270-Q1,INA271-Q1SBOS401B–JULY2007–ICALCHARACTERISTICS(continued)TA=25°C,VS=12V,VCM=12V,VSENSE=100mV(unlessotherwisenoted)POSITIVEOUTPUTVOLTAGESWINGvsOUTPUTCURRENT1211109VS=12VSourcingCurrent25°C125°CVS=3VSourcingCurrent25°C–40°tsinkingcapabilityisapproximately400µA.15202530QUIESCENTCURRENTvsOUTPUTVOLTAGE1Outp

utVolta

(V)76543210125°C0510IQ(µA)8–40°C6678910OutputVoltage(V)Outp tuCurrent (mA)QUIESCENT CURRENTvs COMMON-MODEVOLTAGE875775675VSENSE=100mV34OUTPUT SHORT-CIRCUIT CURRENTvs SUPPLYVOLTAGEOutput

Short-Circuit

Current

(mA)VS=12VVS=2.7V–40°C25°C125°C3IQ(µA)575475375275175−16−12−8−4VSENSE=0mVVS=12VVS=76802.53.54.55.56.57.58.59.510.511.51718VCM(V)PREOUTOUTPUTRESISTANCEPRODUCTIONDISTRIBUTION200SupplyVoltage(V)BUFFERGAINvsFREQUENCY150PhasePopulationGain(dB)10050Gain0−50101001k10k100k1M10M82949698116118120Frequency(Hz)RPREOUT(kW)6SubmitDocumentationFeedbackCopyright©2007–2010,TexasInstrumentsIncorporatedProductFolderLink(s):INA270-Q1INA271-Q1/

INA270-Q1,S401B–JULY2007–REVISEDFEBRUARY2010TYPICALCHARACTERISTICS(continued)TA=25°C,VS=12V,VCM=12V,VSENSE=100mV(unlessotherwisenoted)SMALL-SIGNAL STEP RESPONSE10-mVTO 20-mV INPUTLARGE-SIGNAL STEP RESPONSE10-mVTO 100-mV INPUT50mV/div10µs/div500mV/div10µs/divCopyright©2007–2010,TexasInstrumentsIncorporatedSubmitDocumentationFeedback7ProductFolderLink(s):INA270-Q1INA271-Q1/

INA270-Q1,INA271-Q1SBOS401B–JULY2007–LICATIONINFORMATIONBasicConutpins,IN+andIN–,shouldbeconnectedascloselyaspossibletotheshuationswithnoisyorhigh-impedancepowersuppliesmaghnotmandatory,anadditional10-mFelectrolyticcapacitorplacedinparallelwiththeotherbypasscapacitorsmaybeusefulinapplicationswithparticularlynoisysupplies.−16V to +80VSupplyRLoadSingle-Pole FilterCapacitor+2.7V to +18VIN+5 kWIN–5 kWPRE OUTBUF INV+0.01 µF0.1 µFA1OUTA296 270BasicConnectionsPowerSupplyTheinputcircuitryoftheINA270andINA271canaccuratelymeasurebeyonditspower-supplyvoltage,V+.Forexample,theV+powersupplycanbe5V,putvoltagerangeoftheOUTterminal,however,ingRSThevaluechosenfortheshuntresistor,RS,dependsontheapplicationandisacompromisebetweensmall-sigluesofRSprovidebetteraccuracyatlowercurrentsbyminimizingtheeffectsofoffset,tapplications,bestperformanceisattainedwitminputvoltageforaccuratemeasurementsis(VS–0.2)/entProtectionThe–16-Vto80-Vcommon-moderangeoftheINA270andINA271isidealforwithstandingautomotivefaultconditionsrangingfrom12-Vbatteryreversalupto80-Vtransients,ventthattheINA270andINA271areexposedtotransientsontheinputsinexcessoftheirratings,externaltransientabsorptionwithsemiconductortransientabsorbers(zenersorTranszorbs)arenecessary.8SubmitDocumentationFeedbackCopyright©2007–2010,TexasInstrumentsIncorporatedProductFolderLink(s):INA270-Q1INA271-Q1/

INA270-Q1,S401B–JULY2007–REVISEDFEBRUARY2010UseofMOVsorVDRsisnotrecommendedethetransientabsorbersuchthatitwillneverallowtheINA270andINA271tobeexposedtotransientsgreaterthan80V(thatis,allowfortransientabsorbertolerance,aswellasadditionalvoltagebecauseoftransientabsorberdynamicimpedance).Despitetheuseofinternalzener-typeESDprotection,theINA270andINA271arenotsuitedtousingexternalresistorsinserieswiththeinputs,sincetheinternalgainresistorscanvaryupto±30%,accuracyisnotimportant,thenresistorscanbeaddedinserieswiththeINA270andINA271inputs,VoltageRangeTheoutputoftheINA270andINA271isaccuratewithintheoutputvoltageswingrangesetbythepower-supplypin,V+.TheINA270andINA271readilyen-polefilteringcanbeaccomplishedwithasinglecapacitorbecauseofthe96-kΩoutputimpedanceatPREOUTonpin3(seeFigure2a).TheINA270andINA271readilylendthemselvestosecond-orderSallen-Keyconfigurations(seeFigure2b).WhendesigningtheseconfigurationsconsiderthatthePREOUT96-kΩoutputimpedanceexhibitsaninitialvariationof±30%withtheadditionofa–2200-ppm/°yRSupplyLoadSingle-Pole FilterCapacitor+2.7V to +18VIN+5kWIN–5 kWPRE OUTBUF INV+IN+5kWIN–5 kWPRE OUTBUF INSecond-Order,Sallen-Key Filter ConnectionCRCLoad+2.7V to +18VV+A1OutputA1OutputA296 kWA296 kWRINA270GNDa)Single-PoleFilterINA270RGNDb)Second-Order,270andertousetheappropriatebuffergain(INA270=1.4,INA271=2)-OrderorSecond-OrderFilteringCopyright©2007–2010,TexasInstrumentsIncorporatedSubmitDocumentationFeedback9ProductFolderLink(s):INA270-Q1INA271-Q1/

INA270-Q1,INA271-Q1SBOS401B–JULY2007–uracyVariationsasaResultofVSENSEandCommon-ModeVoltageTheaccuracyoftheINA270andINA271current-shuntmonitorsisafunctionoftwomainvariables:VSENSE(VIN+–VIN–)andcommon-modevoltage,VCM,relativetothesupplyvoltage,xpressedas(VIN++VIN–)/2;however,inpractice,VCMisseenasthevoltageatVIN+ctionaddressestheaccuracyofthesespecificoperatingregions:NormalCase1:VSENSE≥20mV,VCM≥VSNormalCase2:VSENSE≥20mV,VCM

分销商库存信息:TIINA270AQDRQ1INA271AQDRQ1

2024年2月19日发(作者：湛小楠)

Error

utVolta

(V)76543210125°C0510IQ(µA)8–40°C6678910OutputVoltage(V)Outp tuCurrent (mA)QUIESCENT CURRENTvs COMMON-MODEVOLTAGE875775675VSENSE=100mV34OUTPUT SHORT-CIRCUIT CURRENTvs SUPPLYVOLTAGEOutput

Short-Circuit

Current

分销商库存信息:TIINA270AQDRQ1INA271AQDRQ1

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