LM4702中文资料

LM4702Overture®AudioPowerAmplifierSeriesStereoHighFidelity200Volt*DriverwithMuteGeneralDescriptionTheLM4702isahighfidelityaudiopoweramplifierdriverdesignedfordemandingconsumerandpro-audioapplica-tions.Amplifieroutputpowermaybescaledbychangingthesupplyvoltageandnumberofoutputdevices.TheLM4702iscapableofdeliveringinexcessof300wattsperchannelsingleendedintoan8ohmloadinthepresenceof10%highlineheadroomand20%supplyregulation.TheLM4702includesthermalshutdowncircuitrythatacti-vateswhenthedietemperatureexceeds150˚C.TheLM4702’smutefunction,whenactivated,mutestheinputdrivesignalandforcestheamplifieroutputtoaquiescentstate.TheLM4702isavailablein3gradesthatspanawiderangeofapplicationsandperformancelevels.TheLM4702Cistargetedathighvolumeapplications.TheLM4702B(inde-velopment)includesahighervoltageratingalongwiththetighterspecifications.TheLM4702A(indevelopment)isthepremiumpartwiththehighestvoltagerating,fullyspecifiedwithlimitsovervoltageandtemperature,andisofferedinamilitary883compliantTO-3package.*TentativeMaxOperatingvoltagefortheLM4702A,LM4702B(indevelopment)KeySpecificationsjWideoperatingvoltagerangeLM4702A(indevelopment)±20Vto±85VLM4702B(indevelopment)±20Vto±80VLM4702C±20Vto±75VjEquivalentNoise3µVjPSRR110dB(typ)jTHD0.001%FeaturesnVeryhighvoltageoperationnScalableoutputpowernMinimumexternalcomponentsnExternalcompensationnThermalShutdownandMuteApplicationsnAVreceiversnAudiophilepowerampsnProAudionHighvoltageindustrialapplicationsTypicalApplicationandConnectionDiagrams20158319FIGURE1.TypicalAudioAmplifierApplicationCircuit20158302PlasticPackage—15LeadTO-220(forLM4702;LM4702B,indevelopment)20158320MetalCan—15LeadTO-3(forLM4702A,indevelopment)SPiKe™ProtectionandOverture™aretrademarksofNationalSemiconductorCorporation.September2005LM4702Overture®StereoHighFidelity200Volt*DriverwithMute©2005NationalSemiconductorCorporationDS201583(Continued)20158319FIGURE1.TypicalAudioAmplifierApplicationCircuitLM4702(ForBandC)(Note13)20158301TopViewOrderNumberLM4702T(B&C)SeeNSPackageNumberTA15ALM4702(Notes1,2)IfMilitary/Aerospacespecifieddevicesarerequired,pleasecontacttheNationalSemiconductorSalesOffice/Distributorsforavailabilityandspecifications.SupplyVoltage|V+|+|V-|200VDifferentialInputVoltage+/-6VCommonModeInputRange0.4Veeto0.4VccPowerDissipation(Note3)4WESDSusceptibility(Note4)1.5kVESDSusceptibility(Note5)200VJunctionTemperature(TJMAX)(Note9)150˚CSolderingInformationTPackage(10seconds)260˚CStorageTemperature-40˚Cto+150˚CThermalResistanceθJA30˚C/WθJC1˚C/WOperatingRatings(Notes1,2)TemperatureRangeTMIN≤TA≤TMAX−20˚C≤TA≤+75˚CSupplyVoltage|V+|+|V-|LM4702A(indevelopment)+/-20V≤VTOTAL≤+/-85VLM4702B(indevelopment)+/-20V≤VTOTAL≤+/-80VLM4702C+/-20V≤VTOTAL≤+/-75VElectricalCharacteristics(LM4702C)Vcc=+75V,Vee=–75V(Notes1,2)ThefollowingspecificationsapplyforIMUTE=1.5mA,unlessotherwisespecified.LimitsapplyforTA=25˚C.SymbolParameterConditionsLM4702Units(Limits)TypicalLimit(Note6)(Notes7,8)ICCTotalQuiescentPowerSupplyCurrentVCM=0V,VO=0V,IO=0A2530mA(max)THD+NTotalHarmonicDistortion+NoiseNoload,AV=30dBVOUT=14VRMS@1kHz0.005%RSInputBiasResistor50100kΩ(max)AvClosedLoopVoltageGain26dB(min)AvopenOpenLoopGainVin=1mVrms,f=1KHz,C=30pF93dBVomOutputVoltageSwingTHD=0.05%,Freq=20Hzto20KHz51Vrms(min)VnoiseOutputNoiseRs=10kΩ,LPF=30kHz,Av=30dBA-weighted150300µV(max)90µVIOUTOutputCurrentCurrentfromSourcetoSinkPins5.5310mA(min)mA(max)ImuteCurrentintoMutePinToputpartin“play”mode1.512mA(min)mA(max)XTALKChannelSeparation(Note11)f=1kHz@Av=30dB85dBSRSlewRateVIN=1.2VP-P,f=10kHzsquareWave,Outputsshorted15V/µsVOSInputOffsetVoltageVCM=0V,IO=0mA1035mV(max)IBInputBiasCurrentVCM=0V,IO=0mA500nAPSRRPowerSupplyRejectionRatioRs=1k,f=100Hz,Vripple=1Vrms,InputReferred11095dB(min)ElectricalCharacteristics(LM4702C)Vcc=+50V,Vee=–50V(Notes1,2)ThefollowingspecificationsapplyforIMUTE=1.5mA,unlessotherwisespecified.LimitsapplyforTA=25˚C.SymbolParameterConditionsLM4702Units(Limits)TypicalLimit(Note6)(Notes7,8)ICCTotalQuiescentPowerSupplyCurrentVCM=0V,VO=0V,IO=0A2230mA(max)THD+NTotalHarmonicDistortion+NoiseNoload,AV=30dBVOUT=10VRMS@1kHz0.005%RSInputBiasResistor50100kΩ(max)LM4702(LM4702C)Vcc=+50V,Vee=–50V(Notes1,2)(Continued)ThefollowingspecificationsapplyforIMUTE=1.5mA,unlessotherwisespecified.LimitsapplyforTA=25˚C.SymbolParameterConditionsLM4702Units(Limits)TypicalLimit(Note6)(Notes7,8)AvClosedLoopVoltageGain26dB(min)AvopenOpenLoopGainVin=1mVrms,f=1KHz,C=30pF93dBVomOutputVoltageSwingTHD=0.05%,Freq=20Hzto20KHz33Vrms(min)VnoiseOutputNoiseRs=10kΩ,LPF=30kHz,Av=30dBA-weighted150300µV(max)90µVIOUTOutputCurrentOutputsShorted5.2310mA(min)mA(max)ImuteCurrentintoMutePinToputpartin“play”mode1.512mA(min)mA(max)XTALKChannelSeparation(Note11)f=1kHzatAv=30dB85dBSRSlewRateVIN=1.2VP-P,f=10kHzsquareWave,Outputsshorted15V/µsVOSInputOffsetVoltageVCM=0V,IO=0mA1035mV(max)IBInputBiasCurrentVCM=0V,IO=0mA500nAPSRRPowerSupplyRejectionRa