LM3886 SymLink - Texas Instruments

1 MAY1999 REVISEDMARCH2013LM3886 Overture AudioPowerAmplifierSeriesHigh-Performanc e68 WAudioPowerAmplifierw/MuteCheckforSample s:LM38861 FEATURESDESCRIPTIONTheLM3886isahigh-perf ormanceaudiopower23 atVCC=amplifiercapableofdelivering68 Wofcontinuous 28 Vaveragepowertoa 4 loadand38 Winto8 with atVCC= +Nfrom20Hz 20kHz. 28 VTheperformanceoftheLM3886,utilizingitsS elf atVCC=PeakInstantaneousTemperature( Ke)(SPiKe) 35 Vprotectioncircuitry,putsit ina classabovediscrete 135 WInstantaneousPeakOutputPowerandhybridam plifiersbyprovidinganinherently,Capabili tydynamicallyprotectedSafeOperatingArea( SOA).

2 SPiKeprotectionmeansthatthesepartsare Signal-to-NoiseRatio 92dBcompletelysafeguardedattheoutputagai nst AnInputMuteFunctionovervoltage,undervolt age,overloads,includingshorts OutputProtectionfroma ShorttoGroundortothesupplies,thermalruna way, OutputOver-VoltageProtectionagainstratio ofgreaterthan92dBwitha + SupplyUnder-VoltageProtection,notAllowin gloadovertheaudiospectrum,andprovidesexc ellentInternalBiasingtoOccurwhen|VEE| + |VCC| linearitywithanIMD(SMPTE)typicalratingof 12V, 11-LeadTO-220 Package WideSupplyRange20V- 94 VAPPLICATIONS Componentstereo Compactstereo Self-poweredspeakers Surround-soundamplifiers High-endstereoTVs1 Pleasebeawarethatanimportantnoticeconcer ningavailability,standardwarranty,anduse in a 1999 2013, MAY1999 * (1)(1)TheLM3886 TpackageTA11 Bis a non-isolatedpackage,settingthetabofthede viceandtheheatsinkatV potentialwhentheLM3886is a micawasheris usedin additiontothermalcompound, CS(casetosink)is increased,buttheheatsinkwillbeisolatedfr omV.

3 2 SubmitDocumentationFeedbackCopyright 1999 2013, MAY1999 (1)(2)(3)SupplyVoltage|V+|+|V |(NoSignal)94 VSupplyVoltage|V+|+|V |(InputSignal)84 VCommonModeInputVoltage(V+orV ) and|V+| + |V | 80 VDifferentialInputVoltage(4)60 VOutputCurrentInternallyLimitedPowerDiss ipation(5)125 WESDS usceptibility(6)3000 VJunctionTemperature(7)150 CSolderingInformationT Package(10seconds)260 CStorageTemperature 40 C to+150 CThermalResistance JC1 C/W JA43 C/W(1)Allvoltagesaremeasuredwithrespectt otheGNDpin(pin7),unlessotherwisespecifie d.(2) a goodindicationofdeviceperformance.(3)If Military/Aerospacespecifieddevicesarereq uired,pleasecontacttheTexasInstrumentsSa lesOffice/Distributorsforavailabilityand specifications.

4 (4)TheDifferentialInputVoltageAbsoluteMa ximumRatingis basedonsupplyvoltagesofV+= +40 VandV = 40V.(5)Foroperatingatcasetemperaturesabo ve25 C,thedevicemustbederatedbasedona 150 C maximumjunctiontemperatureandathermalres istanceof JC= C/W(junctiontocase).RefertoFigure50in ApplicationInformationunderTHERMALCONSID ERATIONS.(6)Humanbodymodel,100pFdischarg edthrougha resistor.(7)Theoperatingjunctiontemperat uremaximumis 150 C,however,theinstantaneousSafeOperatingA reatemperatureis 250 (1)(2)(3)TemperatureRangeTMIN TA TMAX 20 C TA +85 CSupplyVoltage|V+| + |V |20 Vto84V(1)Allvoltagesaremeasuredwithrespe cttotheGNDpin(pin7),unlessotherwisespeci fied.

5 (2) a goodindicationofdeviceperformance.(3)Ope rationis specifiedupto84V,however,distortionmaybe introducedfromSPIKeProtectionCircuitryif (SeeFigure5)Copyright 1999 2013,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback3 ProductFolderLinks:LM3886LM3886 SNAS091C MAY1999 (1)(2)Thefollowingspecificationsapplyfor V+= +28V,V = 28V,IMUTE= 4 25 (Limits)Typical(3)Limit(4)|V+| + |V |PowerSupplyVoltage(5)Vpin7 V 9V20V (min)1884V (max)AMMuteAttenuationPin8 Openorat0V,Mute:OnCurrentoutofPin8 > ,11580dB(min)Mute:OffPO(6)OutputPower(Co ntinuousAverage)THD+ N = (max)f = 1 kHz;f = 20kHz|V+| = |V | = 28V,RL= 4 6860W(min)|V+| = |V | = 28V,RL= 8 3830W(min)|V+| = |V | = 35V,RL= 8 50 WPeakPOInstantaneousPeakOutputPower135 WTHD+ NTotalHarmonicDistortionPlusNoise60W,RL= 4 ,%30W,RL= 8 , f 26dBSR(6)SlewRate(7)VIN= ,tRISE= 2 ns198V/ s (min)I+ (6)TotalQuiescentPowerSupplyCurrentVCM= 0V,Vo= 0V,Io= 0A5085mA(max)VOS(8)InputOffsetVoltageVCM = 0V,Io= 0 mA110mV(max)IBInputBiasCurrentVCM= 0V,Io= 0 A (max)IOSI nputOffsetCurrentVCM= 0V,Io= 0 A (max)IoOutputCurrentLimit|V+| = |V | = 20V,tON= 10ms,VO= (min)Vod(8)OutputDropoutVoltage(9)|V+ VO|, V+= 28V,Io= + (max)

6 |VO V |, V = 28V,Io= (max)PSRR(8)PowerSupplyRejectionRatioV+= 40 Vto20V,V = 40V,12085dB(min)VCM= 0V,Io= 0 mAV+= 40V,V = 40 Vto 20V,10585dB(min)VCM= 0V,Io= 0 mACMRR(8)CommonModeRejectionRatioV+= 60 Vto20V,V = 20 Vto 60V,11085dB(min)VCM= 20 Vto 20V,Io= 0 mAAVOL(8)OpenLoopVoltageGain|V+| = |V | = 28V,RL= 2 k , VO= 40V11590dB(min)GBWPGain-BandwidthProduct |V+| = |V | = 30V82 MHz(min)fO= 100kHz,VIN= 50mVrmseIN(6)InputNoiseIHF A V (max)RIN= 600 (InputReferred)SNRS ignal-to-NoiseRatioPO= 1W,A-Weighted, kHz,RS= 25 PO= 60W,A-Weighted,110dBMeasuredat1 kHz,RS= 25 IMDI ntermodulationDistortionTest60Hz,7 kHz,4:1(SMPTE) ,7 kHz,1:1(SMPTE) (1)Allvoltagesaremeasuredwithrespecttoth eGNDpin(pin7),unlessotherwisespecified.

7 (2) a goodindicationofdeviceperformance.(3)Typ icalsaremeasuredat25 C andrepresenttheparametricnorm.(4)Limitsa respeficiedtoAOQL(AverageOutgoingQuality Level).(5)V musthaveatleast 9 Vatitspinwithreferencetogroundin orderfortheunder-voltageprotectioncircui trytobedisabled.(6)ACElectricalTest;refe rtoTestCircuit#2-ACElectricalTestCircuit .(7) ,theslewrateis typicallylarger.(8)DCElectricalTest;refe rtoTestCircuit#1-DCElectricalTestCircuit .(9)Theoutputdropoutvoltageis 1999 2013, MAY1999 REVISEDMARCH2013 TestCircuit#1-DCElectricalTestCircuitTes tCircuit#2-ACElectricalTestCircuitCopyri ght 1999 2013,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback5 ProductFolderLinks:LM3886LM3886 SNAS091C MAY1999 * 1999 2013, MAY1999 REVISEDMARCH2013 EquivalentSchematic(excludingactiveprote ctioncircuitry)Copyright 1999 2013,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback7 ProductFolderLinks.

8 LM3886LM3886 SNAS091C MAY1999 (excludingactiveprotectioncircuitry)Exte rnalComponentsDescription(SeeFigure1 andFigure3) volumecontrolbysettingthevoltagelevelall owedtotheamplifier' 'snon-invertinginputwhichmaybepassedthro ughtotheloaduponpower-downofthesystemdue tothelowinputimpedanceofthecircuitrywhen theunder-voltagecircuitryis (1)Reducesthegain(bandwidthoftheamplifie r) (1) lowfrequencypole(highpassroll-off)at:fc= 1/(2 RiCi) (1)Athigherfrequenciesfeedbackresistance workswithCftoprovidelowerACGainin highfrequencypole(lowpassroll-off)exists at:fc= [Rf1Rf2(s+ 1/Rf2Cf)]/[(Rf1+ Rf2)(s+ 1/Cf(Rf1+ Rf2))] (1) toturnthemutingfunctionoff.

9 RMis calculatedusing:RM (|VEE| )/I8whereI8 (1)WorkswithCSNtostabilizetheoutputstage bycreatinga (1)WorkswithRSNtostabilizetheoutputstage bycreatinga 1/(2 RSNCSN) (1)Provideshighimpedanceathighfrequencie ssothatR maydecouplea highlycapacitiveloadandreducetheQ lowimpedanceatlowfrequenciestoshortoutR (1) (1) ,CC, andthecompensationcapacitor,Cf. Figure3 anddescribedaboveareapplicablein 1999 2013, MAY1999 1999 2013,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback9 ProductFolderLinks:LM3886LM3886 SNAS091C MAY1999 (continued) 1999 2013, MAY1999 REVISEDMARCH2013 TypicalPerformanceCharacteristics(contin ued)THD+ NTHD+ + NTHD+ + NTHD+ 1999 2013,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback11 ProductFolderLinks.

10 LM3886LM3886 SNAS091C MAY1999 (continued)THD+ NTHD+ + NTHD+ + NTHD+ 1999 2013, MAY1999 REVISEDMARCH2013 TypicalPerformanceCharacteristics(contin ued)THD+ N DistributionTHD+ N + N DistributionTHD+ N + N 1999 2013,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback13 ProductFolderLinks:LM3886LM3886 SNAS091C MAY1999 (continued)MaxHeatsinkThermalResistance( C/W)attheSpecifiedAmbientTemperature( C)MaximumPowerDissipationvsSupplyVoltage Note:Themaximumheatsinkthermalresistance values, SA, inthetableabovewerecalculatedusinga CS= ,4 1999 2013, MAY1999 REVISEDMARCH2013 TypicalPerformanceCharacteristics(contin ued)IMD60Hz,7 kHz,4:1 IMD60Hz,7 kHz,4 ,1:1 IMD60Hz,7 kHz1 ,7 kHz,1 1999 2013,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback15 ProductFolderLinks.