HCNR200,HCNR201線(xiàn)性光耦學(xué)習(xí)資料

1、Good is good, but better carries it.精益求精，善益求善。HCNR200,HCNR201線(xiàn)性光耦_HCNR200andHCNR201High-LinearityAnalogOptocouplersDataSheetFeaturesLownonlinearity:0.01%K3(IPD2/IPD1)transfergainHCNR200:15%HCNR201:5%Lowgaintemperaturecoefficient:65ppm/CWidebandwidthDCto1MHzWorldwidesafetyapprovalUL1577recognized(5kV

2、rms/1minrating)CSAapprovedIEC/EN/DINEN60747-5-2approvedVIORM=1414Vpeak(option#050)Surfacemountoptionavailable(Option#300)8-PinDIPpackage-0.400”spacingAllowsflexiblecircuitdesignApplicationsLowcostanalogisolationTelecom:Modem,PBXIndustrialprocesscontrol:TransducerisolatorIsolatorforthermocouples4mAto

3、20mAloopisolationSMPSfeedbackloop,SMPSfeedforwardMonitormotorsupplyvoltageMedicalDescriptionTheHCNR200/201high-linearityanalogoptocouplerconsistsofahigh-performanceAlGaAsLEDthatilluminatestwocloselymatchedphotodiodes.Theinputphotodiodecanbeusedtomonitor,andthereforestabilize,thelightoutputoftheLED.A

4、saresult,thenon-linearityanddriftcharacteristicsoftheLEDcanbevirtuallyeliminated.TheoutputphotodiodeproducesaphotocurrentthatislinearlyrelatedtothelightoutputoftheLED.Theclosematchingofthephoto-diodesandadvanceddesignofthepackageensurethehighlinearityandstablegaincharacteristicsoftheoptocoupler.TheH

5、CNR200/201canbeusedtoisolateanalogsignalsinawidevarietyofapplicationsthatrequiregoodstability,linearity,bandwidthandlowcost.TheHCNR200/201isveryflexibleand,byappropriatedesignoftheapplicationcircuit,iscapableofoperatinginmanydifferentmodes,including:unipolar/bipolar,ac/dcandinverting/non-inverting.T

6、heHCNR200/201isanexcellentsolutionformanyanalogisolationproblems.SchematicCAUTION:Itisadvisedthatnormalstaticprecautionsbetakeninhandlingandassemblyofthiscomponenttopreventdamageand/ordegradationwhichmaybeinducedbyESD.OrderingInformationHCNR200/HCNR201isULRecognizedwith5000Vrmsfor1minuteperUL1577.Pa

7、rtRoHSnonRoHSSurfaceGullTapeUL5000Vrms/60747-5-2NumberCompliantCompliantPackageMountWing&Reel1MinuteratingVIORM=1414VpeakQuantity-000Enooption400milX42pertube-300E#300WidebodyXXX42pertubeHCNR200-500E#500DIP-8XXXX750perreelHCNR201-050E#050XX42pertube-350E#350XXXX42pertube-550E#550XXXXX750perreelToord

8、er,chooseapartnumberfromthepartnumbercolumnandcombinewiththedesiredoptionfromtheoptioncolumntoformanorderentry.Example1:HCNR200-550EtoorderproductofGullWingSurfaceMountpackageinTapeandReelpackagingwithIEC/EN/DINEN60747-5-2VIORM=1414VpeakSafetyApprovalandUL5000Vrmsfor1minuteratingandRoHScompliant.Exa

9、mple2:HCNR201toorderproductof8-PinWidebodyDIPpackageinTubepackagingwithUL5000Vrmsfor1minuteratingandnonRoHScompliant.Optiondatasheetsareavailable.ContactyourAvagosalesrepresentativeorauthorizeddistributorforinformation.Remarks:Thenotation#XXXisusedforexistingproducts,while(new)productslaunchedsinceJ

10、uly15,2001andRoHScompliantwilluseXXXE.PackageOutlineDrawingsFigure1.GullWingSurfaceMountOption#300SolderReflowTemperatureProfileRecommendedPb-FreeIRProfileRegulatoryInformationTheHCNR200/201optocouplerfeaturesa0.400”wide,eightpinDIPpackage.Thispackagewasspecificallydesignedtomeetworldwideregulatoryr

11、equirements.TheHCNR200/201hasbeenapprovedbythefollowingorganizations:ULRecognizedunderUL1577,ComponentRecognitionProgram,FILEE55361CSAApprovedunderCSAComponentAcceptanceNotice#5,FileCA88324IEC/EN/DINEN60747-5-2ApprovedunderIEC60747-5-2:1997+A1:2002EN60747-5-2:2001+A1:2002DINEN60747-5-2(VDE0884Teil2)

12、:2003-01(Option050only)InsulationandSafetyRelatedSpecificationsParameterSymbolValueUnitsConditionsMin.ExternalClearanceL(IO1)9.6mmMeasuredfrominputterminalstooutput(ExternalAirGap)terminals,shortestdistancethroughairMin.ExternalCreepageL(IO2)10.0mmMeasuredfrominputterminalstooutput(ExternalTrackingP

13、ath)terminals,shortestdistancepathalongbodyMin.InternalClearance1.0mmThroughinsulationdistanceconductorto(InternalPlasticGap)conductor,usuallythedirectdistancebetweenthephotoemitterandphotodetectorinsidetheoptocouplercavityMin.InternalCreepage4.0mmTheshortestdistancearoundtheborder(InternalTrackingP

14、ath)betweentwodifferentinsulatingmaterialsmeasuredbetweentheemitteranddetectorComparativeTrackingIndexCTI200VDINIEC112/VDE0303PART1IsolationGroupIIIaMaterialgroup(DINVDE0110)Option300surfacemountclassificationisClassAinaccordancewithCECC00802.IEC/EN/DINEN60747-5-2InsulationCharacteristics(Option#050

15、Only)DescriptionSymbolCharacteristicUnitInstallationclassificationperDINVDE0110/1.89,Table1ClimaticClassification(DINIEC68part1)55/100/21PollutionDegree(DINVDE0110Part1/1.89)2MaximumWorkingInsulationVoltageVIORM1414VpeakInputtoOutputTestVoltage,Methodb*VPR2651VpeakPR=1.875xVIORM,100%ProductionTestwi

16、thm=1sec,PartialDischarge109*RefertothefrontoftheOptocouplersectionofthecurrentcatalogforamoredetaileddescriptionofIEC/EN/DINEN60747-5-2andotherproductsafetyregulations.Note:OptocouplersprovidingsafeelectricalseparationperIEC/EN/DINEN60747-5-2dosoonlywithinthesafety-limitingvaluestowhichtheyarequali

17、fied.Protectivecut-outswitchesmustbeusedtoensurethatthesafetylimitsarenotexceeded.AbsoluteMaximumRatingsStorageTemperature-55Cto+125COperatingTemperature(TA)-55Cto+100CJunctionTemperature(TJ)125CReflowTemperatureProfileSeePackageOutlineDrawingsSectionLeadSolderTemperature260Cfor10sAverageInputCurren

18、t-IF25mAPeakInputCurrent-IF40mAReverseInputVoltage-VR2.5VR=100A,Pin1-2)InputPowerDissipation60mWTA=85CReverseOutputPhotodiodeVoltage30VReverseInputPhotodiodeVoltage30VRecommendedOperatingConditionsStorageTemperature-40Cto+85COperatingTemperature-40Cto+85CAverageInputCurrent-IF1-20mAPeakInputCurrent-

19、IF35mAReverseOutputPhotodiodeVoltage0-15VReverseInputPhotodiodeVoltage0-15VElectricalSpecificationsTA=25Cunlessotherwisespecified.ParameterSymbolDeviceMin.Typ.Max.UnitsTransferGainK3HCNR2000.851.001.155nAIPD50A,2,310VVPD15VHCNR2010.951.001.055nAIPD50A,10VVPD15VHCNR2010.931.001.07-40CTA85C,15nAIPD50A

20、,0VVPD15VTemperatureK3/TA-65ppm/C-40CTA85C,2,3Coefficientof5nAIPD50A,TransferGain0VVPD15VDCNonLinearityNLBFHCNR2000.010.25%5nAIPD50A,4,5,2(BestFit)0VVPD15V6HCNR2010.010.055nAIPD50A,20VVPD15VHCNR2010.010.07-40CTA85C,25nAIPD50A,0VVPD15VDCNonlinearityNLEF0.0165nAIPD50A,3(EndsFit)%0VVPD15VInputPhoto-K1H

21、CNR2000.250.500.75%IF=10mA,7diodeCurrent0VVPD115VTransferRatioHCNR2010.360.480.72(IPD1/IF)TemperatureK1/TA-0.3%/C-40CTA85C,7CoefficientIF=10mAofK10VVPD115VPhotodiodeILK0.525nAIF=0mA,8LeakageCurrent0VVPD15VPhotodiodeBVRPD30150VIR=100AReverseBreak-downVoltagePhotodiodeCPD22pFVPD=0VCapacitanceLEDForwar

22、dVF5VIF=10mA9,Voltage5IF=10mA,-40CTA85CLEDReverseBVR2.59VIF=100ABreakdownVoltageTemperatureVF/TA-1.7mV/CIF=10mACoefficientofForwardVoltageLEDJunctionCLED80pFf=1MHz,CapacitanceVF=0VACElectricalSpecificationsTA=25Cunlessotherwisespecified.TestParameterSymbolDeviceMin.Typ.Max.UnitsC

23、onditionsFig.NoteLEDBandwidthf-3dB9MHzIF=10mAApplicationCircuitBandwidth:ApplicationCircuit:IMRRPackageCharacteristicsTA=25Cunlessotherwisespecified.TestParameterSymbolDeviceMin.Typ.Max.UnitsInput-OutputVISO5000VrmsRH50%,4,5Momentary-Withstandt=1min.Voltage*ResistanceRI-O10121013VO=500VDC4(Input-Out

24、put)1011TA=100C,4VIO=500VDCCapacitanceCI-O0.40.6pFf=1MHz4(Input-Output)*TheInput-OutputMomentaryWithstandVoltageisadielectricvoltageratingthatshouldnotbeinterpretedasaninput-outputcontinuousvoltagerating.ForthecontinuousvoltageratingrefertotheVDE0884InsulationCharacteristicsTable(ifapplicable),youre

25、quipmentlevelsafetyspecification,orApplicationNote1074,“OptocouplerInput-OutputEnduranceVoltage.”Notes:1.K3iscalculatedfromtheslopeofthebestfitlineofIPD2vs.IPD1withelevenequallydistributeddatapointsfrom5nAto50A.ThisisapproximatelyequaltoIPD2/IPD1atIF=10mA.2.BESTFITDCNONLINEARITY(NLBF)isthemaximumdev

26、iationexpressedasapercentageofthefullscaleoutputofa“bestfit”straightlinefromagraphofIPD2vs.IPD1withelevenequallydistributeddatapointsfrom5nAto50A.IPD2errortobestfitlineisthedeviationbelowandabovethebestfitline,expressedasapercentageofthefullscaleoutput.3.ENDSFITDCNONLINEARITY(NLEF)isthemaximumdeviat

27、ionexpressedasapercentageoffullscaleoutputofastraightlinefromthe5nAtothe50AdatapointonthegraphofIPD2vs.IPD1.4.Deviceconsideredatwo-terminaldevice:Pins1,2,3,and4shortedtogetherandpins5,6,7,and8shortedtogether.5.InaccordancewithUL1577,eachoptocouplerisprooftestedbyapplyinganinsulationtestvoltageof6000

28、Vrmsfor1second(leakagedetectioncurrentlimit,II-Oof5Amax.).Thistestisperformedbeforethe100%productiontestforpartialdischarge(methodb)shownintheIEC/EN/DINEN60747-5-2InsulationCharacteris-ticsTable(forOption#050only).6.Specificperformancewilldependoncircuittopologyandcomponents.7.IMRRisdefinedastherati

29、oofthesignalgain(withsignalappliedtoVINofFigure16)totheisolationmodegain(withVINconnectedtoinputcommonandthesignalappliedbetweentheinputandoutputcommons)at60Hz,expressedindB.Figure2.NormalizedK3vs.inputIPD.Figure3.K3driftvs.temperature.Figure4.IPD2errorvs.inputIPD(seenote4).Figure6.NLBFdriftvs.tempe

30、rature.Figure7.InputphotodiodeCTRvs.LEDinputcurrent.Figure5.NLBFvs.temperature.Figure8.Typicalphotodiodeleakagevs.temperature.Figure10.LEDforwardvoltagevs.temperature.Figure9.LEDinputcurrentvs.forwardvoltage.Figure11.ThermalderatingcurvedependenceofsafetylimitingvaluewithcasetemperatureperIEC/EN/DIN

31、EN60747-5-2.Figure12.Basicisolationamplifier.Figure13.Unipolarcircuittopologies.Figure14.Bipolarcircuittopologies.Figure15.Loop-powered4-20mAcurrentloopcircuits.Figure16.High-speedlow-costanalogisolator.Figure17.Precisionanalogisolationamplifier.Figure18.Bipolarisolationamplifier.Figure19.Magnitude/

32、signisolationamplifier.Figure20.SPICEmodellisting.DESIGNEQUATIONS:VOUT/ILOOP=K3(R5R3)/R1+R3)K3=K2/K1=CONSTANT=1NOTE:THETWOOP-AMPSSHOWNARETWOSEPARATELM158,ANDNOTTWOCHANNELSINASINGLEDUALPACKAGE,OTHERWISETHELOOPSIDEANDOUTPUTSIDEWILLNOTBEPROPERLYISOLATED.Figure21.4to20mAHCNR200receivercircuit.DESIGNEQUA

33、TIONS:(ILOOP/VIN)=K3(R5+R3)/R5R1)K3=K2/K1=CONSTANT=1NOTE:THETWOOP-AMPSSHOWNARETWOSEPARATELM158,ANDNOTTWOCHANNELSINASINGLEDUALPACKAGE,OTHERWISETHELOOPSIDEANDOUTPUTSIDEWILLNOTBEPROPERLYISOLATED.Figure22.4to20mAHCNR200transmittercircuit.TheoryofOperationFigure1illustrateshowtheHCNR200/201high-linearity

34、optocouplerisconfigured.ThebasicoptocouplerconsistsofanLEDandtwophotodiodes.TheLEDandoneofthephotodiodes(PD1)isontheinputleadframeandtheotherphotodiode(PD2)isontheoutputleadframe.ThepackageoftheoptocouplerisconstructedsothateachphotodiodereceivesapproximatelythesameamountoflightfromtheLED.Anexternal

35、feedbackamplifiercanbeusedwithPD1tomonitorthelightoutputoftheLEDandautomaticallyadjusttheLEDcurrenttocompensateforanynon-linearitiesorchangesinlightoutputoftheLED.ThefeedbackamplifieractstostabilizeandlinearizethelightoutputoftheLED.Theoutputphotodiodethenconvertsthestable,linearlightoutputoftheLEDi

36、ntoacurrent,whichcanthenbeconvertedbackintoavoltagebyanotheramplifier.Figure12aillustratesthebasiccircuittopologyforimplementingasimpleisolationamplifierusingtheHCNR200/201optocoupler.Besidestheoptocoupler,twoexternalop-ampsandtworesistorsarerequired.Thissimplecircuitisactuallyabittoosimpletofunctio

37、nproperlyinanactualcircuit,butitisquiteusefulforexplaininghowthebasicisolationamplifiercircuitworks(afewmorecomponentsandacircuitchangearerequiredtomakeapracticalcircuit,liketheoneshowninFigure12b).TheoperationofthebasiccircuitmaynotbeimmediatelyobviousjustfrominspectingFigure12a,particularlytheinpu

38、tpartofthecircuit.Statedbriefly,amplifierA1adjuststheLEDcurrent(IF),andthereforethecurrentinPD1(IPD1),tomaintainits“+”inputterminalat0V.Forexample,increasingtheinputvoltagewouldtendtoincreasethevoltageofthe“+”inputterminalofA1above0V.A1amplifiesthatincrease,causingIFtoincrease,aswellasIPD1.Becauseof

39、thewaythatPD1isconnected,IPD1willpullthe“+”terminaloftheop-ampbacktowardground.A1willcontinuetoincreaseIFuntilits“+”terminalisbackat0V.AssumingthatA1isaperfectop-amp,nocurrentflowsintotheinputsofA1;therefore,allofthecurrentflowingthroughR1willflowthroughPD1.Sincethe“+”inputofA1isat0V,thecurrentthrou

40、ghR1,andthereforeIPD1aswell,isequaltoVIN/R1.Essentially,amplifierA1adjustsIFsothatIPD1=VIN/R1.NoticethatIPD1dependsONLYontheinputvoltageandthevalueofR1andisindependentofthelightoutputcharacteristicsoftheLED.AsthelightoutputoftheLEDchangeswithtemperature,amplifierA1adjustsIFtocompensateandmaintainaco

41、nstantcurrentinPD1.AlsonoticethatIPD1isexactlyproportionaltoVIN,givingaverylinearrelationshipbetweentheinputvoltageandthephotodiodecurrent.Therelationshipbetweentheinputopticalpowerandtheoutputcurrentofaphotodiodeisverylinear.Therefore,bystabilizingandlinearizingIPD1,thelightoutputoftheLEDisalsostab

42、ilizedandlinearized.AndsincelightfromtheLEDfallsonbothofthephotodiodes,IPD2willbestabilizedaswell.Thephysicalconstructionofthepackagedeterminestherelativeamountsoflightthatfallonthetwophotodiodesand,therefore,theratioofthephotodiodecurrents.Thisresultsinverystableoperationovertimeandtemperature.Thep

43、hotodiodecurrentratiocanbeexpressedasaconstant,K,whereK=IPD2/IPD1.AmplifierA2andresistorR2formatrans-resistanceamplifierthatconvertsIPD2backintoavoltage,VOUT,whereVOUT=IPD2*R2.Combiningtheabovethreeequationsyieldsanoverallexpressionrelatingtheoutputvoltagetotheinputvoltage,VOUT/VIN=K*(R2/R1).Therefo

44、retherelationshipbetweenVINandVOUTisconstant,linear,andindependentofthelightoutputcharacteristicsoftheLED.ThegainofthebasicisolationamplifiercircuitcanbeadjustedsimplybyadjustingtheratioofR2toR1.TheparameterK(calledK3intheelectricalspecifications)canbethoughtofasthegainoftheoptocouplerandisspecified

45、inthedatasheet.Remember,thecircuitinFigure12aissimplifiedinordertoexplainthebasiccircuitoperation.Apracticalcircuit,morelikeFigure12b,willrequireafewadditionalcomponentstostabilizetheinputpartofthecircuit,tolimittheLEDcurrent,ortooptimizecircuitperformance.Exampleapplicationcircuitswillbediscussedla

46、terinthedatasheet.CircuitDesignFlexibilityCircuitdesignwiththeHCNR200/201isveryflexiblebecausetheLEDandbothphotodiodesareaccessibletothedesigner.Thisallowsthedesignertomakeperformancetrade-offsthatwouldotherwisebedifficulttomakewithcommerciallyavailableisolationamplifiers(e.g.,bandwidthvs.accuracyvs

47、.cost).Analogisolationcircuitscanbedesignedforapplicationsthathaveeitherunipolar(e.g.,0-10V)orbipolar(e.g.,10V)signals,withpositiveornegativeinputoroutputvoltages.SeveralsimplifiedcircuittopologiesillustratingthedesignflexibilityoftheHCNR200/201arediscussedbelow.ThecircuitinFigure12aisconfiguredtobe

48、non-invertingwithpositiveinputandoutputvoltages.Bysimplychangingthepolarityofoneorbothofthephotodiodes,theLED,ortheop-ampinputs,itispossibletoimplementothercircuitconfigurationsaswell.Figure13illustrateshowtochangethebasiccircuittoaccommodatebothpositiveandnegativeinputandoutputvoltages.Theinputando

49、utputcircuitscanbematchedtoachieveanycombinationofpositiveandnegativevoltages,allowingforbothinvertingandnon-invertingcircuits.Alloftheconfigurationsdescribedaboveareunipolar(singlepolarity);thecircuitscannotaccommodateasignalthatmightswingbothpositiveandnegative.Itispossible,however,tousetheHCNR200

50、/201optocouplertoimplementabipolarisolationamplifier.TwotopologiesthatallowforbipolaroperationareshowninFigure14.ThecircuitinFigure14ausestwocurrentsourcestooffsetthesignalsothatitappearstobeunipolartotheoptocoupler.CurrentsourceIOS1providesenoughoffsettoensurethatIPD1isalwayspositive.Thesecondcurre

51、ntsource,IOS2,providesanoffsetofoppositepolaritytoobtainanetcircuitoffsetofzero.CurrentsourcesIOS1andIOS2canbeimplementedsimplyasresistorsconnectedtosuitablevoltagesources.ThecircuitinFigure14busestwooptocouplerstoobtainbipolaroperation.Thefirstoptocouplerhandlesthepositivevoltageexcursions,whilethe

52、secondoptocouplerhandlesthenegativeones.Theoutputphotodiodesareconnectedinanantiparallelconfigurationsothattheyproduceoutputsignalsofoppositepolarity.Thefirstcircuithastheobviousadvantageofrequiringonlyoneoptocoupler;however,theoffsetperformanceofthecircuitisdependentonthematchingofIOS1andIOS2andisa

53、lsodependentonthegainoftheoptocoupler.Changesinthegainoftheoptocouplerwilldirectlyaffecttheoffsetofthecircuit.Theoffsetperformanceofthesecondcircuit,ontheotherhand,ismuchmorestable;itisindependentofoptocouplergainandhasnomatchedcurrentsourcestoworryabout.However,thesecondcircuitrequirestwooptocouple

54、rs,separategainadjustmentsforthepositiveandnegativeportionsofthesignal,andcanexhibitcrossoverdistortionnearzerovolts.Thecorrectcircuittochooseforanapplicationwoulddependontherequirementsofthatparticularapplication.AswiththebasicisolationamplifiercircuitinFigure12a,thecircuitsinFigure14aresimplifieda

55、ndwouldrequireafewadditionalcomponentstofunctionproperly.Twoexamplecircuitsthatoperatewithbipolarinputsignalsarediscussedinthenextsection.Asafinalexampleofcircuitdesignflexibility,thesimplifiedschematicsinFigure15illustratehowtoimplement4-20mAanalogcurrent-looptransmitterandreceivercircuitsusingtheH

56、CNR200/201optocoupler.Animportantfeatureofthesecircuitsisthattheloopsideofthecircuitispoweredentirelybytheloopcurrent,eliminatingtheneedforanisolatedpowersupply.TheinputandoutputcircuitsinFigure15aarethesameasthenegativeinputandpositiveoutputcircuitsshowninFigures13cand13b,exceptfortheadditionofR3an

57、dzenerdiodeD1ontheinputsideofthecircuit.D1regulatesthesupplyvoltagefortheinputamplifier,whileR3formsacurrentdividerwithR1toscaletheloopcurrentdownfrom20mAtoanappropriatelevelfortheinputcircuit(50A).Asinthesimplercircuits,theinputamplifieradjuststheLEDcurrentsothatbothofitsinputterminalsareatthesamev

58、oltage.TheloopcurrentisthendividedbetweenR1andR3.IPD1isequaltothecurrentinR1andisgivenbythefollowingequation:IPD1=ILOOP*R3/(R1+R3).CombiningtheaboveequationwiththeequationsusedforFigure12ayieldsanoverallexpressionrelatingtheoutputvoltagetotheloopcurrent,VOUT/ILOOP=K*(R2*R3)/(R1+R3).Again,youcanseeth

59、attherelationshipisconstant,linear,andindependentofthecharacteristicsoftheLED.The4-20mAtransmittercircuitinFigure15bisalittledifferentfromthepreviouscircuits,particularlytheoutputcircuit.TheoutputcircuitdoesnotdirectlygenerateanoutputvoltagewhichissensedbyR2,itinsteadusesQ1togenerateanoutputcurrentw

60、hichflowsthroughR3.ThisoutputcurrentgeneratesavoltageacrossR3,whichisthensensedbyR2.Ananalysissimilartotheoneaboveyieldsthefollowingexpressionrelatingoutputcurrenttoinputvoltage:ILOOP/VIN=K*(R2+R3)/(R1*R3).Theprecedingcircuitswerepresentedtoillustratetheflexibilityindesigninganalogisolationcircuitsu