High Fidelity Headphone Amplifier (Rev. B) - TI.com

1 Filter andI/V Gain StageStereo Hi FiHeadphone DriverTPA6120A2 DYR > 120 dBfor WholeSystem!OUT AOUT BOUT COUT nFRFLIN LIN+RFRIN RIN+RI1 kW1 kWLOUTROUT1 kWRFRF1 kWRI1 kWRI1 kWRI1 nFRF1 kW1 nFRF1 kW1 kW1/2 OPA41341/2 OPA4134 IN A IN B+IN B+IN A IN C IN D+IN D+IN CPCMA udioDataSourceControllerPCM1792orDSD1792 LRCKBCKDATARSTSCKMDOMCMDIMSZEROLZERORIOU TL IOUTL+IOUTR IOUTR+AUDIO &BuyTechnicalDocumentsTools &SoftwareSupport &CommunityTPA6120A2 SLOS431B MARCH2004 REVISEDFEBRUARY2015 TPA6120A2 High FidelityHeadphoneAmplifier1 Features3 DescriptionIn applicationsrequiringa high-poweroutput,very1 SNRof ,the TPA6120A2 THDof costlydiscretedesignand allowsmusic, Current-FeedbackArchitecturenot the Amplifier ,to be 'scurrent-feedbackAB amplifierarchitecturedelivers OutputVoltageNoiseof Vrmsathighbandwidth,extremelylownoise,an dup toGain= 1V/V(16 Load)128dBof dynamicrange.

2 PowerSupplyRange: 5V to 15 VThreekey featuresmakecurrent-feedbackamplifiers 1300V/ s SlewRateoutstandingfor featureis the high Can be configuredfor SingleEndedor secondfeatureis current-on-demand IndependentPowerSuppliesfor Low Crosstalkat the outputthat enablesthe amplifierto respondquicklyand linearlywhennecessarywithoutrisk output2 Applicationspoweraresuddenlyneeded,theam plifiercan ProfessionalAudioEquipmentrespondextreme lyquicklywithoutraisingthe noise HiFi Smartphonefloorof the systemand degradingthe thegain-independent ConsumerHomeAudioEquipmentfrequencyrespo nsethat allowsthe full bandwidthof HeadphoneDriversthe amplifierto be usedovera widerangeof (1)PARTNUMBERPACKAGEBODYSIZE(NOM)HSOP(20 ) (14) (1) For all availablepackages,see the orderableaddendumatthe end of the SimplifiedSchematic1An IMPORTANTNOTICEat the end of this datasheetaddressesavailability,warranty, changes,use in safety-criticalapplications,intellectual propertymattersand MARCH2004 Applicationsand Pin Configurationand Deviceand Mechanical,Packaging,and RevisionHistoryNOTE:Pagenumbersfor previousrevisionsmay differfrompagenumbersin the (July2014)to RevisionBPage Changedthe DeviceInformationPackagesFrom:DWP(20) and RGY(14) To: HSOP(20) and VQFN(14).

3 1 ChangedQFNto VQFNin the Pin Addeda NOTEto the Applicationsand Movedtwo paragraphsfollowingFigure19 to proceedFigure19 ..14 ChangesfromOriginal(March2004)to RevisionAPage ChangedAddedESDR atingtable,FeatureDescription section,DeviceFunctionalModes,Applicatio nandImplementationsection,PowerSupplyRec ommendationssection,Layoutsection,Device and DocumentationSupportsection,andMechanica l,Packaging, andOrderableInformation Addedthe UpdatedPin descriptionsto LoweredminimumVIC( 5 Vcc)From: To: ..5 LoweredminimumVIC( 15 Vcc)From: : DeletedIMD (IntermodulationDistortion), 12 Vccdata,DynamicRange(replacedwith SNR,in 1V/Vgain)..5 Changedthe THD=NUNITFrom:% To: Changedthe SNRto showthe 2004 2015,TexasInstrumentsIncorporatedProduct FolderLinks:TPA6120A21267891314 LVCC+LIN+RIN+RVCC+RVCC LVCC LOUTNCROUTNCNCNCRIN LIN 1234 567891020191817161514131211 LVCC LOUTLVCC+LIN+LIN NCNCNCNCNCRVCC ROUTRVCC+RIN+RIN NCNCNCNCNCNC No internal MARCH2004 REVISEDFEBRUARY20156 Pin Configurationand FunctionsDWPP ackageRGYP ackage20-PinHSOP14-PinVQFN withThermalPADTop ViewTop ViewPin channelnegativepowersupply mustbe kept at the sameLVCC-112 Ipotentialas RVCC-if bothamplifiersare to be channeloutputLeft channelpositivepowersupply mustbe kept at the sameLVCC+314 Ipotentialas RVCC+if bothamplifiersare to be +41 ILeft channelpositiveinputLIN-52 ILeft channelnegativeinput6,7,8,9,10,11,NC3, 4, 5, 11-Not internallyconnected12,13,14.

4 15 RIN-166 IRightchannelnegativeinputRIN+177 IRightchannelpositiveinputRightchannelpo sitivepowersupply- mustbe kept at the sameRVCC+188 Ipotentialas LVCC+if bothamplifiersare to be mustbe kept at the sameRVCC-2010 Ipotentialas LVCC-if bothamplifiersare to be thermalpad mustbe soldereddownin allThermalPad---applicationsto properlysecuredeviceon the 2004 2015,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback3 ProductFolderLinks:TPA6120A2 TPA6120A2 SLOS431B MARCH2004 (unlessotherwisenoted)(1)MINMAXUNITS upplyvoltage,xVCC+to xVCC-Wherex=L or R channel933 VInputvoltage,VI(2) VCCD ifferentialinputvoltage,VID6 VMinimumload impedance8 Continuoustotal powerdissipationSeeThermalInformationOpe ratingfree air temperaturerange,TA 4085 COperatingjunctiontemperaturerange,TJ(3) 40150 CStorageTemperature,Tstg 40125 C(1)Stressesbeyondthoselistedunder absolutemaximumratings may causepermanentdamageto the stressratingsonly,and functionaloperationof the deviceat theseor any otherconditionsbeyondthoseindicatedunder recommendedoperatingconditions is not absolute maximum ratedconditionsfor extendedperiodsmay affectdevicereliability.

5 (2)Whenthe TPA6120A2is powereddown,the inputsourcevoltagemustbe kept below600mVpeak.(3)The TPA6120A2incorporatesan exposedPowerPADon the undersideof the acts as a heatsinkand mustbe connectedto athermallydissipatingplanefor do so may resultin exceedingthe maximumjunctiontemperaturethatcouldperma nentlydamagethe TI TechnicalBriefSLMA002for moreinformationaboututilizingthe (HBM),per ANSI/ESDA/JEDECJS-For Pins:LVCC+,RVCC+, 500001(1)LVCC-,RVCCE lectrostaticFor all pins except: 2000V(ESD)Humanbodymodel(HBM),per ANSI/ESDA/JEDECJS-VDischargeLVCC+,RVCC+, LVCC-,001,all otherpinsRVCCC hargeddevicemodel(CDM),per JEDEC specificationJESD22-C101 1500(1)Levellistedaboveis the passinglevelper ANSI,ESDA,and 500 VHBM allowssafe manufacturingwith a 5 15 Supplyvoltage,VCC+and VCC-VSingleSupply1030 LoadimpedanceVCC= 5V or 15V16 Operatingfree air temperature,TA 4085 (1)DWP[HSOP]RGY[VQFN]UNIT20 PINS14 PINSR JCtopJunction-to-case(top) C/W JCbotJunction-to-case(bottom) (1)For moreinformationabouttraditionaland new thermalmetrics,see theIC PackageThermalMetricsapplicationreport, 2004 2015, MARCH2004 (unlessotherwisenoted)PARAMETERTESTCONDI TIONSMINTYPMAXUNIT|VIO|Inputoffsetvoltag e(measuredVCC= 5V or 15V25mVdifferentially)

6 PSRRP owersupplyrejectionratioVCC= 5V to 15V75dBVCC= 5V 15V (eachchannel)mAVCC= 15V15 IOOutputcurrent(per channel)VCC= 5V to 15V700mAInputoffsetvoltagedriftVCC= 5V or 15V20 V/ CriInputresistance300k roOutputresistanceOpenLoop13 VOOutputvoltageswingVCC= 15V,RL= 25 (1)TA= 25 C, RL= 25 , Gain= 1V/V(unlessotherwisenoted)PARAMETERTESTC ONDITIONSMINTYPMAXUNITVCC= 5V PO= 10mW101RL= 32 f = 1kHzVCC= 15V PO= 100mW90 VCC= 5V PO= 10mW104RL= 64 f = 1kHzVCC= 15V PO= 100mW94VO= 3 VPP,VCC= 5V,RL= 10k 104 TotalharmonicdistortionGain= 1V/VTHD+NdBf = 1kHzplus noiseVO= 10 VPP,VCC= 15V,RL= 10k 108 Gain= 1V/Vf = 1kHzVO= 2 VPP,VCC= 15V,RL= 10k 1V/Vf = 1kHzRL= 32 VCC= 5V 75f = 1kHzVCC= 15V 78V(RIPPLE)= 1 VPPS upplyvoltagerejectionkSVRdBratioRL= 64 VCC= 5V 75f = 1kHzVCC= 15V 75V(RIPPLE)= 1 VPPC ommonmoderejectionCMRRVCC= 5V or 15V100dBratio(differential)VCC= 15V,Gain= 5V/V,VO= 20 VPP1300 SRSlewrateV/ sVCC= 5V, Gain= 2V/V,VO= 5 VPP900 VCC= 5V to 15 VVnOutputnoisevoltageGain= 1 VrmsRL= 16 VCC= 15V,Gain= 1 32 to 64 SNRS ignal-to-noiseratiodBf = 1kHzVCC= 5V, Gain= 1 1 VRMSVCC= 15V-112RF= 1k CrosstalkdBRL= 32 to 64 VCC= 5V-105f = 1kHz(1)

7 For THD+N,kSVR, and crosstalk,the bandwidthof the measurementinstrumentswas set to 2004 2015,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback5 +N - Total Harmonic Distortion + Noise - dB PO - Output Power - W VCC = 5 VVCC = 15VC007 C007 +N - Total Harmonic Distortion + Noise - dB PO - Output Power - W VCC = 5 VVCC = 15VC008 C008 -140-120-100-80-60-40-20010100 1k 10kTHD+N - Total Harmonic Distortion + Noise - dB f - Frequency - Hz VCC = 5 ; PO = 10mWVCC = 5 ; PO = 20mWVCC = 15 ; PO = 100 mWVCC = 15 ; PO = 200 mWC004 +N - Total Harmonic Distortion + Noise - dB VO - Output Voltage - VPP VCC = 5 VVCC = 15 VC005 C005 -140-120-100-80-60-40-20010100 1k 10kTHD+N - Total Harmonic Distortion + Noise - dB f - Frequency - Hz VCC = 5 V ; VO = 3 VPPVCC = 5 V ; VO = 6 VPPVCC = 15 V; VO = 5 VPPVCC = 15 V ; VO = 10 VPPC001 -140-120-100-80-60-40-20010100 1k 10kTHD+N - Total Harmonic Distortion + Noise - dB f - Frequency - Hz VCC = 5 ; PO = 10mWVCC = 5 ; PO = 20mWVCC = 15 ; PO = 100mWVCC = 15 ; PO = 200mWC003 TPA6120A2 SLOS431B MARCH2004 10k Gain= 3V/VRF= 2k RL= 64 Gain= 3V/VRF= 2k RI= 1k BW = 80kHzRI= 1k BW = 80kHzFigure1.

8 TotalHarmonicDistortion+ NoiseversusFigure2. TotalHarmonicDistortion+ NoiseversusFrequencyFrequencyRL= 10k Gain= 3V/VRF= 2k RL= 32 Gain= 3V/VRF= 2k RI= 1k BW = 80kHzf = 1kHzRI= 1k BW = 80kHzFigure4. TotalHarmonicDistortion+ NoiseversusOutputFigure3. TotalHarmonicDistortion+ NoiseversusVoltageFrequencyRL= 64 Gain= 3V/VRF= 2k RL= 32 Gain= 3V/VRF= 2k RI= 1k BW = 80kHzf = 1kHzRI= 1k BW = 80kHzf = 1kHzFigure5. TotalHarmonicDistortion+ NoiseversusOutputFigure6. TotalHarmonicdistortion+ NoiseversusOutputPowerPower6 SubmitDocumentationFeedbackCopyright 2004 2015, - Power Dissipation - W Po - Total Output Power - mW Vcc = +/- 5 V; RL = 32 Vcc = +/- 5 V; RL = 64 Vcc = +/- 15 V; RL = 32 Vcc = +/- 15 V; RL = 64 C009 90 80 70 60 50 40 30 20 10 010100 1k 10kkSVR - Supply Voltage Rejection Ratio - dB f - Frequency - Hz RL = 32 RL = 64 C011 -120-110-100-90-80-70-60-50-4010100 1k 10kCrosstalk - dB f - Frequency - Hz VCC=5V, RL = 32 VCC=5V, RL = 64 VCC=15V, RL = 32 VCC=15V, RL = 64 C014 - Power Dissipation - W Po - Total Output Power - W Vcc = +/- 15 V; RL = 32 Vcc = +/- 15 V; RL = 64 C009 - Power Dissipation - W Po - Total Output Power - W Vcc = +/- 15 V; RL = 32 Vcc = +/- 15 V.

9 RL = 64 C009 MARCH2004 REVISEDFEBRUARY2015 TypicalCharacteristics(continued)MonoVCC = 15 VVCC= 12VV(ripple)= 1 VPPGain= 2V/VBW = 80kHzRepresentativeof bothpositiveand negativesuppliesFigure7. PowerDissipationversusOutputPowerFigure8 . PowerDissipationversusTotalOutputPowerVC C= 5VV(ripple)= 1 VPPGain= 2V/VRF= 1k Gain= 2V/VBW = 80kHzBW = 80kHzFigure9. SupplyVoltagerejectionRatioversusFrequen cyFigure10. CrosstalkversusFrequencyFigure11. PowerDissipationversusPowerOutput- 50mWScaleCopyright 2004 2015,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback7 ProductFolderLinks:TPA6120A2 LIN LIN+RIN RIN+TPA6120A2 LOUTROUTLVCC+LVCC LIN+LIN RIN+RIN RVCC+RVCC Audio PrecisionMeasurementOutput+-LEFTINMLEFTI NPCICIVDDGNDE xternal PowerSupply+-1ufHPLEFTR seriesLoadLow PassFilterAudio PrecisionMeasurementInput+-TPA6120A2 TPA6120A2 SLOS431B MARCH2004 usedon all Vcc low-passfilter is usedto removeharmoniccontentabovethe TestCircuit9 TPA6120A2is a current-feedbackamplifierwith differentialinputsand low voltagenoise,low distortion,highopen-loopgainthroughouta largefrequencyrange,and can be usedin a similarfashionas low distortionof the TPA6120A2resultsin a signal-to-noiseratioof 128 powersuppliesfor the two amplifiersare availableseparately,one amplifiercan be turnedoff 2004 2015,TexasInstrumentsIncorporatedProduct FolderLinks.

10 TPA6120A2 DATA24232221201918171615567891011121314 PCM1792 BCKSCKDGNDVDDMSMDIMCMDORSTAGND2 IOUTR VCC1 VCOMLVCOMRIREFIOUTR+AGND3 RAGND1 ZEROL1234 ZERORMSELLRCK28272625 VCC2 LAGND3 LIOUTL IOUTL+5 ++47mF47mF5 V10mF10 kW + nFRF1 V++++V V+4121314 INDOUTD + nFRF1 kWV V+41098 INC + nFRF1 kWV V+4321 + nFRF1 kWV V+456711111111 INB INAOUTAOUTBOUTC +1 kVCC +LIN LIN+ +RFVCC +RIN RIN+ kW1 kWRIRF1 kWRI1 kW1 kW1 kRIRF1 kWRIRF+ VV++ 5 VV OPA4134+100mF10mF12 VVCC++100mF10mF 12 VVCC TPA6120A2++ MARCH2004 deviceoperatesas a wide-bandwidth, Applicationsand ImplementationNOTEI nformationin the followingapplicationssectionsis not partof the TI componentspecification,and TI doesnot warrantits accuracyor s customersareresponsiblefor determiningsuitabilityof componentsfor test theirdesignimplementationto manyapplications,the audiosourceis digital,and mustgo througha digital-to-analogconverter(DAC)so thattraditionalanalogamplifierscan drivethe speakersor ,HighFidelityDAC+ HeadphoneAmplifierSolutionFigure13 showsa completecir