tpa3111d1

INPINNSDSDFaultFaultPLIMITPLIMITPVCC8to26V1uFOUTNFERRITEBEADFILTEROUTP10W8ΩOUTNFERRITEBEADFILTERFERRITEBEADFILTEROUTP10W8ΩOUT+-OUTAudioSourceTPA3111D1GAIN0GAIN0GAIN1GAIN1TPA3111D1–AUGUST200910-WFILTER-FREEMONOCLASS-DAUDIOPOWERAMPLIFIERwithSPEAKERGUARD™CheckforSamples:TPA3111D11FEATURESDESCRIPTION2•10-Wintoan8-ΩLoadat10%THD+NFroma12-VSupplyTheTPA3111D1isa10-Wefficient,Class-Daudiopoweramplifierfordrivingabridgetiedspeaker.•7-Wintoan4-ΩLoadat10%THD+NFromaAdvancedEMISuppresionTechnologyenablesthe8-VSupplyuseofinexpensiveferritebeadfiltersattheoutputs•94%EfficientClass-DOperationinto8-ΩLoadwhilemeetingEMCrequirements.SpeakerGuard™EliminatesNeedforHeatSinksspeakerprotectionsystemincludesanadjustable•WideSupplyVoltageRangeAllowsOperationpowerlimiterandaDCdetectioncircuit.Thefrom8to26Vadjustablepowerlimiterallowstheusertosetavirtualvoltageraillowerthanthechipsupplytolimit•Filter-FreeOperationtheamountofcurrentthroughthespeaker.TheDC•SpeakerGuard™SpeakerProtectionIncludesdetectcircuitmeasuresthefrequencyandamplitudeAdjustablePowerLimiterplusDCProtectionofthePWMsignalandshutsofftheoutputstageif•FlowThroughPinOutFacilitatesEasyBoardtheinputcapacitorsaredamagedorshortsexistontheinputs.Layout•RobustPin-to-PinShortCircuitProtectionandTheTPA3111D1candriveamonospeakeraslowasThermalProtectionwithAuto-RecoveryOption4Ω.ThehighefficiencyoftheTPA3111D1,90%,eliminatestheneedforanexternalheatsinkwhen•ExcellentTHD+N/PopFreePerformanceplayingmusic.•FourSelectable,FixedGainSettingsTheoutputsarefullyprotectedagainstshortsto•DifferentialInputsGND,VCC,andoutput-to-output.Theshort-circuitprotectionandthermalprotectionincludesanAPPLICATIONSauto-recoveryfeature.•Televisions•Monitor/Laptop•ConsumerAudioEquipmentFigure1.SimplifiedApplicationDiagram1Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.2SpeakerGuardisatrademarkofTexasInstruments.PRODUCTIONDATAinformationiscurrentasofpublicationdate.Copyright©2009,TexasInstrumentsIncorporatedProductsconformtospecificationsperthetermsoftheTexasInstrumentsstandardwarranty.Productionprocessingdoesnotnecessarilyincludetestingofallparameters.TPA3111D1SLOS618–AUGUST2009................................................................................................................................................................................................(unlessotherwisenoted)(1)UNITVCCSupplyvoltageAVCC,PVCC–0.3Vto30VSD,FAULT,GAIN0,GAIN1–0.3VtoVCC+0.3VVIInterfacepinvoltagePLIMIT–0.3VtoGVDD+0.3VINN,INP–0.3Vto6.3VContinuoustotalpowerdissipationSeeDissipationRatingTableTAOperatingfree-airtemperaturerange–40°Cto85°CTJOperatingjunctiontemperaturerange(2)–40°Cto150°CTstgStoragetemperaturerange–65°Cto150°CRLMinimumLoadResistanceBTL3.2Humanbodymodel(3)(allpins)±2kVElectrostaticdischargeCharged-devicemodel(4)(allpins)±500V(1)Stressesbeyondthoselistedunderabsolutemaximumratingsmaycausepermanentdamagetothedevice.Thesearestressratingsonly,andfunctionaloperationsofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunderrecommendedoperatingconditionsisnotimplied.Exposuretoabsolute-maximum-ratedconditionsforextendedperiodsmayaffectdevicereliability.(2)TheTPA3111D1incorporatesanexposedthermalpadontheundersideofthechip.Thisactsasaheatsink,anditmustbeconnectedtoathermallydissipatingplaneforproperpowerdissipation.Failuretodosomayresultinthedevicegoingintothermalprotectionshutdown.SeeTITechnicalBriefsSCBA017DandSLUA271formoreinformationaboutusingtheQFNthermalpad.SeeTITechnicalBriefsSLMA002formoreinformationaboutusingtheHTQFPthermalpad.(3)InaccordancewithJEDECStandard22,TestMethodA114-B.(4)InaccordancewithJEDECStandard22,TestMethodC101-ATYPICALDISSIPATIONRATINGSPACKAGE(1)TA≤25°CDERATINGFACTORTA=85°CθJPψJT28pinTSSOP0.724.98W25.1°C/W2.59W0.45°C/W(PWP)°C/W(1)Forthemostcurrentpackageandorderinginformation,seethePackageOptionAddendumattheendofthisdocument,orseetheTIwebsiteat(unlessotherwisenoted)PARAMETERTESTCONDITIONSMINMAXUNITVCCSupplyvoltagePVCC,AVCC826VVIHHigh-levelinputvoltageSD,GAIN0,GAIN12VVILLow-levelinputvoltageSD,GAIN0,GAIN10.8VVOLLow-leveloutputvoltageFAULT,RPULLUP=100kΩ,VCC=26V0.8VIIHHigh-levelinputcurrentSD,GAIN0,GAIN1,VI=2,VCC=18V50µAIILLow-levelinputcurrentSD,GAIN0,GAIN1,VI=0.8V,VCC=18V5µATAOperatingfree-airtemperature–4085°CDCCHARACTERISTICSTA=25°C,VCC=24V,RL=8Ω(unlessotherwisenoted)PARAMETERTESTCONDITIONSMINTYPMAXUNITClass-Doutputoffsetvolta