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Audio Subsystem with Mono Class AB Loudspeaker Amp & Stereo OCL/SE Headphone Amp PDF

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Preview Audio Subsystem with Mono Class AB Loudspeaker Amp & Stereo OCL/SE Headphone Amp

LM49120, LM49120TLEVAL www.ti.com SNAS431C–JUNE2008–REVISEDMAY2013 LM49120 Audio Sub-System with Mono Class AB Loudspeaker Amplifier and Stereo OCL/SE Headphone Amplifier CheckforSamples:LM49120,LM49120TLEVAL FEATURES DESCRIPTION 1 • RFImmunity The LM49120 is a compact audio subsystem 2 designed for portable handheld applications such as • SelectableOCL/SEHeadphoneDrivers cellular phones. The LM49120 combines a mono • 32StepVolumeControl 1.3W speaker amplifier, stereo 85mW/ch output • ClickandPopSuppression capacitorless headphone amplifier, 32 step volume control, and an input mixer/multiplexer into a single • IndependentSpeakerandHeadphoneGain 16–bumpDSBGApackage. Settings The LM49120 has three input channels: two single- • MinimumExternalComponents ended stereo inputs and a differential mono input. • ThermalOverLoadProtection Each input features a 32-step digital volume control. • Micro-powerShutdown The headphone output stage features an 8 step (- • SpaceSaving16–bumpDSBGA Package 18dB – 0dB) attenuator, while the speaker output stage has two selectable (0dB/+6dB) gain settings. • ThermalShutdownProtection The digital volume control and mode control are • Micro-powerShutdown programmed through a two-wire I2C compatible • I2CControlInterface interface. APPLICATIONS • MobilePhones • PDAs • PortableElectronics KEY SPECIFICATIONS • Output PoweratVDD =5V: – Speaker: RL=8ΩBTL,THD+N≤ 1%:1.3W (typ) – Headphone:RL=32Ω,SE,THD+N≤ 1%: 85mW(typ) • Output PoweratVDD =3.6V: – Speaker: RL=8Ω,BTL,THD+N≤ 1%: 632mW(typ) • Output PoweratVDD =3.3V: – Speaker: RL=8Ω,BTL,THD+N≤ 1%: 540mW(typ) – Headphone:RL=32Ω,OCL/SE,THD+N≤ 1%:35mW(typ) 1 Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet. Alltrademarksarethepropertyoftheirrespectiveowners. 2 PRODUCTIONDATAinformationiscurrentasofpublicationdate. Copyright©2008–2013,TexasInstrumentsIncorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarilyincludetestingofallparameters. LM49120, LM49120TLEVAL SNAS431C–JUNE2008–REVISEDMAY2013 www.ti.com Typical Application VDD 1 PF 0.1 PF ceramic + CS1 CS2 Handsfree Speaker CIN4 MONO_IN+ + MONO + 1C IPNF3 +MONO_IN- VMoultuem toe +C1o8n tdroBl ++C60l adsBs AB 8: - MONO - 1 PF + CIN2 Mixer -18 – 0 dB ROUT AUDIO RIN Volume Control Oauntpdut (8 steps) 32: INPUT + Mute to +18 dB Mode 0.22 PF Select VOC CIN1 AINUPDUIOT +LIN VMoultuem toe +C1o8n tdroBl -(188 s –te 0p sd)B LOUT 32: 0.22 PF 2 CB ICVDD 2 SDA IC Bias Interface Bypass + SCL 2.2PF GND Figure1. Output Capacitor-LessConfiguration VDD 1 PF 0.1 PF ceramic + Handsfree CS1 CS2 Speaker CIN4 MONO_IN+ + MONO + 1 PF + Volume Control +C0lass AB 8: CIN3 MONO_IN- Mute to +18 dB +6 dB - MONO - 1 PF + ROUTCO AUDIO CIN2 RIN Volume Control OMauinxtpdeurt -(188 s –te 0p sd)B 10+0 PF 32: INPUT + Mute to +18 dB Mode 0.22 PF Select VOC CIN1 AINUPDUIOT +LIN VMoultuem toe +C1o8n tdroBl -(188 s –te 0p sd)B LOUT+CO 32: 0.22 PF 100 PF I2CVDD 2 CB SDA IC Bias Interface Bypass+ SCL 2.2PF GND The6dBspeakergainappliesonlytothedifferentialinputpath. Figure2. Single-EndedConfiguration 2 SubmitDocumentationFeedback Copyright©2008–2013,TexasInstrumentsIncorporated ProductFolderLinks:LM49120 LM49120TLEVAL LM49120, LM49120TLEVAL www.ti.com SNAS431C–JUNE2008–REVISEDMAY2013 Connection Diagram TopView 1 2 3 4 A VOC VDD ROUT LOUT B MONO_IN+ BYPASS LIN RIN C MONO_IN- I2CVDD SCL SDA D MONO- GND VDD MONO+ Figure3. 16BumpDSBGAPackage (Bump-SideDown) SeePackageNumber YZR0016 PINDESCRIPTIONS Bump Name Description A1 V HeadphoneCenterAmplifierOutput OC A2 V HeadphonePowerSupply DD A3 R RightChannelHeadphoneOutput OUT A4 L LeftChannelHeadphoneOutput OUT B1 MONO_IN+ MonoNon-invertingInput B2 BYPASS BiasBypass B3 L LeftChannelInput IN B4 R RightChannelInput IN C1 MONO_IN- MonoInvertingInput C2 I2CV I2CInterfacePowerSupply DD C3 SCL I2CClockInput C4 SDA I2CDataInput D1 MONO- LoudspeakerInvertingOutput D2 GND Ground D3 V PowerSupply DD D4 MONO+ LoudspeakerNon-invertingOutput Thesedeviceshavelimitedbuilt-inESDprotection.Theleadsshouldbeshortedtogetherorthedeviceplacedinconductivefoam duringstorageorhandlingtopreventelectrostaticdamagetotheMOSgates. Copyright©2008–2013,TexasInstrumentsIncorporated SubmitDocumentationFeedback 3 ProductFolderLinks:LM49120 LM49120TLEVAL LM49120, LM49120TLEVAL SNAS431C–JUNE2008–REVISEDMAY2013 www.ti.com Absolute Maximum Ratings(1)(2)(3) SupplyVoltage(1) 6.0V StorageTemperature −65°Cto+150°C InputVoltage −0.3toV +0.3 DD PowerDissipation(4) InternallyLimited ESDRating(5) 2000V ESDRating(6) 200V JunctionTemperature 150°C SolderInformation VaporPhase(60sec.) 215°C Infrared(15sec.) 220°C ThermalResistance θ (typ)-YZR0016 62.3°C/W JA (1) “AbsoluteMaximumRatings”indicatelimitsbeyondwhichdamagetothedevicemayoccur,includinginoperabilityanddegradationof devicereliabilityand/orperformance.Functionaloperationofthedeviceand/ornon-degradationattheAbsoluteMaximumRatingsor otherconditionsbeyondthoseindicatedintheRecommendedOperatingConditionsisnotimplied.TheRecommendedOperating Conditionsindicateconditionsatwhichthedeviceisfunctionalandthedeviceshouldnotbeoperatedbeyondsuchconditions.All voltagesaremeasuredwithrespecttothegroundpin,unlessotherwisespecified. (2) TheElectricalCharacteristicstableslistspacifiedspecificationsunderthelistedRecommendedOperatingConditionsexceptas otherwisemodifiedorspecifiedbytheElectricalCharacteristicsConditionsand/orNotes.Typicalspecificationsareestimationsonlyand arenotensured (3) IfMilitary/Aerospacespecifieddevicesarerequired,pleasecontacttheTexasInstrumentsSalesOffice/Distributorsforavailabilityand specifications. (4) ThemaximumpowerdissipationmustbederatedatelevatedtemperaturesandisdictatedbyT ,θ ,andtheambienttemperature, JMAX JA T .ThemaximumallowablepowerdissipationisP =(T -T )/θ orthenumbergiveninAbsoluteMaximumRatings, A DMAX JMAX A JA whicheverislower. (5) Humanbodymodel,applicablestd.JESD22-A114C. (6) Machinemodel,applicablestd.JESD22-A115-A. Operating Ratings TemperatureRange −40°Cto85°C SupplyVoltage(V ) 2.7V≤V ≤5.5V DD DD SupplyVoltage(I2CV ) 1.7V≤I2CV ≤5.5V DD DD 4 SubmitDocumentationFeedback Copyright©2008–2013,TexasInstrumentsIncorporated ProductFolderLinks:LM49120 LM49120TLEVAL LM49120, LM49120TLEVAL www.ti.com SNAS431C–JUNE2008–REVISEDMAY2013 Electrical Characteristics 3.3V(1)(2) ThefollowingspecificationsapplyforV =3.3V,T =25°C,allvolumecontrolssetto0dB,unlessotherwisespecified. DD A LM49120 Units Parameter TestConditions Typ(3) Limits(4) (Limits) V =0,NoLoad IN Outputmode5,6,7,9,10,11,13,14,15 6.2 8.0 mA(max) OCLHeadphone Outputmode5,6,7,9,10,11,13,14,15 5.5 mA SEHeadphone Outputmode1,2,3 4.1 5.3 mA(max) I SupplyCurrent OCLHeadphone DD Outputmode1,2,3 5.5 mA SEHeadphone Outputmode4,8,12 3.7 4.7 mA(max) OCLHeadphone Outputmode4,8,12 3.0 mA SEHeadphone I ShutdownCurrent ShutdownMode0 0.01 1 µA SD V =0V,OutputMode10,LSoutput 10 mV IN VOS OutputOffsetVoltage VIN=0V,OutputMode10,HPoutput, 1.5 5 mV(max) (OCL),0dB(HPOutputGain) LS ;R =8Ω OUT L 540 500 mW(min) THD+N=1%;f=1kHz,BTL,Mode1 P OutputPower O L andR ;R =32Ω OUT OUT L 35 30 mW(min) THD+N=1%;f=1kHz,OCL,Mode8 MONO OUT f=1kHz 0.05 % P =250mW;R =8Ω,BTL,Mode1 OUT L THD+N TotalHarmonicDistortion+Noise L andR ,f=1kHz OUT OUT 0.015 % P =12mW;R =32Ω,SE,Mode8 OUT L L andR ,f=1kHz OUT OUT 0.015 % P =12mW;R =32Ω,OCL,Mode8 OUT L A-weighted, inputsterminatedtoGND,Outputreferred SpeakerAmplifier;Mode1 15 μV SpeakerAmplifier;Mode2 24 μV SpeakerAmplifier;Mode3 29 μV e OutputNoise HeadphoneAmplifier;SE,Mode4 8 μV OUT HeadphoneAmplifier;SE,Mode8 8 μV HeadphoneAmplifier;SE,Mode12 11 μV HeadphoneAmplifier;OCL,Mode4 8 μV HeadphoneAmplifier;OCL,Mode8 9 μV HeadphoneAmplifier;OCL,Mode12 12 μV (1) “AbsoluteMaximumRatings”indicatelimitsbeyondwhichdamagetothedevicemayoccur,includinginoperabilityanddegradationof devicereliabilityand/orperformance.Functionaloperationofthedeviceand/ornon-degradationattheAbsoluteMaximumRatingsor otherconditionsbeyondthoseindicatedintheRecommendedOperatingConditionsisnotimplied.TheRecommendedOperating Conditionsindicateconditionsatwhichthedeviceisfunctionalandthedeviceshouldnotbeoperatedbeyondsuchconditions.All voltagesaremeasuredwithrespecttothegroundpin,unlessotherwisespecified. (2) TheElectricalCharacteristicstableslistspacifiedspecificationsunderthelistedRecommendedOperatingConditionsexceptas otherwisemodifiedorspecifiedbytheElectricalCharacteristicsConditionsand/orNotes.Typicalspecificationsareestimationsonlyand arenotensured (3) TypicalvaluesrepresentmostlikelyparametricnormsatT =+25ºC,andattheRecommendedOperationConditionsatthetimeof A productcharacterizationandarenotensured. (4) Datasheetmin/maxspecificationlimitsareensuredbytestorstatisticalanalysis. Copyright©2008–2013,TexasInstrumentsIncorporated SubmitDocumentationFeedback 5 ProductFolderLinks:LM49120 LM49120TLEVAL LM49120, LM49120TLEVAL SNAS431C–JUNE2008–REVISEDMAY2013 www.ti.com Electrical Characteristics 3.3V(1)(2) (continued) ThefollowingspecificationsapplyforV =3.3V,T =25°C,allvolumecontrolssetto0dB,unlessotherwisespecified. DD A LM49120 Units Parameter TestConditions Typ(3) Limits(4) (Limits) V =200mV ;f =217Hz,R =8Ω(Speaker);R =32Ω(Headphone) RIPPLE PP RIPPLE L L C =2.2µF,BTL B AllaudioinputsterminatedtoGND;outputreferred SpeakerOutput;SpeakerOutputGain6dB SpeakerAmplifier;Mode1 79 dB SpeakerAmplifier;Mode2 63 dB SpeakerAmplifier;Mode3 62 dB SpeakerAmplifierOutput;SpeakerOutputGain0dB SpeakerAmplifier;Mode1 84 dB PSRR PowerSupplyRejectionRatio SpeakerAmplifier;Mode2 63 dB SpeakerAmplifier;Mode3 62 dB HeadphoneAmplifierOutput HeadphoneAmplifier;SE,Mode4 83 dB HeadphoneAmplifier;SE,Mode8 84 dB HeadphoneAmplifier;SE,Mode12 78 dB HeadphoneAmplifier;OCL,Mode4 83 dB HeadphoneAmplifier;OCL,Mode8 80 dB HeadphoneAmplifier;OCL,Mode12 77 dB VOL VolumeControlStepSizeError ±0.2 dB ∈ –91 dB(min) MaximumAttenuation –86 –81 dB(max) VOL DigitalVolumeControlRange RANGE 17.4 dB(min) MaximumGain 18 18.6 dB(max) A HP(SE)MuteAttenuation OutputMode1,2,3 96 dB u(HP) 10 kΩ(min) Maximumgainsetting 12.5 MONO_INInputImpedance 15 kΩ(max) Z IN LINandRINInputImpedance 90 kΩ(min) Maximumattenuationsetting 110 130 kΩ(max) f=217Hz,V =1V , CM PP Speaker,BTL,Mode1, 61 dB R =8Ω L DifferentialInput CMRR Common-ModeRejectionRatio f=217Hz,V =1V , CM PP Headphone,OCL,Mode4, 66 dB R =32Ω L StereoInput Headphone;P =12mW OUT –60 dB f=1kHz,OCL.Mode8 X Crosstalk TALK Headphone;P =12mW OUT –72 dB f=1kHz,SE,Mode8 C =4.7μF,OCL 35 ms B C =2.2μF,SE, B NormalTurnOnMode 120 ms Turn_On_Time=1 T Wake-UpTimefromShutdown WU C =2.2μF,OCL 30 ms B C =4.7μF,SE, B FastTurnOnMode 130 ms Turn_On_Time=0 6 SubmitDocumentationFeedback Copyright©2008–2013,TexasInstrumentsIncorporated ProductFolderLinks:LM49120 LM49120TLEVAL LM49120, LM49120TLEVAL www.ti.com SNAS431C–JUNE2008–REVISEDMAY2013 Electrical Characteristics 5.0V(1)(2) ThefollowingspecificationsapplyforV =5.0V,T =25°C,allvolumecontrolssetto0dB,unlessotherwisespecified. DD A LM49120 Units Parameter TestConditions Typ(3) Limits(4) (Limits) V =0,NoLoad IN Outputmode5,6,7,9,10,11,13,14,15 7.2 mA OCLHeadphone Outputmode5,6,7,9,10,11,13,14,15 6.4 mA SEHeadphone Outputmode1,2,3 6.4 mA I SupplyCurrent OCLHeadphone DD Outputmode1,2,3 4.8 mA SEHeadphone Outputmode4,8,12 4.4 mA OCLHeadphone Outputmode4,8,12 3.5 mA SEHeadphone I ShutdownCurrent ShutdownMode0 0.01 µA SD V =0V,OutputMode10,LSoutput 10 mV IN VOS OutputOffsetVoltage VIN=0V,OutputMode10,HPoutput, 1.5 mV (OCL),0dB(HPOutputGain) LS ;R =8Ω OUT L 1.3 W THD+N=1%;f=1kHz,BTL,Mode1 P OutputPower O L andR ;R =32Ω OUT OUT L 85 mW THD+N=1%;f=1kHz,OCL,Mode8 LS OUT f=1kHz 0.05 % P =250mW;R =8Ω,BTL,Mode1 OUT L THD+N TotalHarmonicDistortion+Noise L andR ,f=1kHz OUT OUT 0.015 % P =12mW;R =32Ω,SE,Mode8 OUT L L andR ,f=1kHz OUT OUT 0.015 % P =12mW;R =32Ω,OCL,Mode8 OUT L A-weighted, inputsterminatedtoGND,Outputreferred SpeakerAmplifier;Mode1 17 μV SpeakerAmplifier;Mode2 27 μV SpeakerAmplifier;Mode3 33 μV e OutputNoise HeadphoneAmplifier;SE,Mode4 8 μV OUT HeadphoneAmplifier;SE,Mode8 8 μV HeadphoneAmplifier;SE,Mode12 12 μV HeadphoneAmplifier;OCL,Mode4 9 μV HeadphoneAmplifier;OCL,Mode8 9 μV HeadphoneAmplifier;OCL,Mode12 12 μV (1) “AbsoluteMaximumRatings”indicatelimitsbeyondwhichdamagetothedevicemayoccur,includinginoperabilityanddegradationof devicereliabilityand/orperformance.Functionaloperationofthedeviceand/ornon-degradationattheAbsoluteMaximumRatingsor otherconditionsbeyondthoseindicatedintheRecommendedOperatingConditionsisnotimplied.TheRecommendedOperating Conditionsindicateconditionsatwhichthedeviceisfunctionalandthedeviceshouldnotbeoperatedbeyondsuchconditions.All voltagesaremeasuredwithrespecttothegroundpin,unlessotherwisespecified. (2) TheElectricalCharacteristicstableslistspacifiedspecificationsunderthelistedRecommendedOperatingConditionsexceptas otherwisemodifiedorspecifiedbytheElectricalCharacteristicsConditionsand/orNotes.Typicalspecificationsareestimationsonlyand arenotensured (3) TypicalvaluesrepresentmostlikelyparametricnormsatT =+25ºC,andattheRecommendedOperationConditionsatthetimeof A productcharacterizationandarenotensured. (4) Datasheetmin/maxspecificationlimitsareensuredbytestorstatisticalanalysis. Copyright©2008–2013,TexasInstrumentsIncorporated SubmitDocumentationFeedback 7 ProductFolderLinks:LM49120 LM49120TLEVAL LM49120, LM49120TLEVAL SNAS431C–JUNE2008–REVISEDMAY2013 www.ti.com Electrical Characteristics 5.0V(1)(2) (continued) ThefollowingspecificationsapplyforV =5.0V,T =25°C,allvolumecontrolssetto0dB,unlessotherwisespecified. DD A LM49120 Units Parameter TestConditions Typ(3) Limits(4) (Limits) V =200mV ;f =217Hz,R =8Ω RIPPLE PP RIPPLE L (Speaker);R =32Ω(Headphone) L C =2.2µF,BTL B AllaudioinputsterminatedtoGND;outputreferred SpeakerOutput;SpeakerOutputGain6dB SpeakerAmplifier;Mode1 69 dB SpeakerAmplifier;Mode2 60 dB SpeakerAmplifier;Mode3 58 dB SpeakerAmplifierOutput;SpeakerOutputGain0dB SpeakerAmplifier;Mode1 84 dB PSRR PowerSupplyRejectionRatio SpeakerAmplifier;Mode2 63 dB SpeakerAmplifier;Mode3 62 dB HeadphoneAmplifierOutput HeadphoneAmplifier;SE,Mode4 75 dB HeadphoneAmplifier;SE,Mode8 75 dB HeadphoneAmplifier;SE,Mode12 72 dB HeadphoneAmplifier;OCL,Mode4 75 dB HeadphoneAmplifier;OCL,Mode8 75 dB HeadphoneAmplifier;OCL,Mode12 72 dB VOL VolumeControlStepSizeError ±0.2 dB ∈ –91 dB MaximumAttenuation –86 –81 dB VOL DigitalVolumeControlRange RANGE dB MaximumGain 18 dB A HP(SE)MuteAttenuation OutputMode1,2,3 96 dB u(HP) kΩ Maximumgainsetting 12.5 MONO_INInputImpedance kΩ Z IN LINandRINInputImpedance kΩ Maximumattenuationsetting 110 kΩ f=217Hz,V =1V , CM PP Speaker,BTL,Mode1, 61 dB R =8Ω L DifferentialInput CMRR Common-ModeRejectionRatio f=217Hz,V =1V , CM PP Headphone,OCL,Mode4, 66 dB R =32Ω L StereoInput Headphone;P =12mW OUT –54 dB f=1kHz,OCL,Mode8 X Crosstalk TALK Headphone;P =12mW OUT –72 dB f=1kHz,SE,Mode8 C =4.7μF,OCL 28 ms B C =2.2μF,SE, B NormalTurnOnMode 151 ms Turn_On_Time=1 T Wake-UpTimefromShutdown WU C =2.2μF,OCL 25 ms B C =4.7μF,SE, B FastTurnOnMode 168 ms Turn_On_Time=0 8 SubmitDocumentationFeedback Copyright©2008–2013,TexasInstrumentsIncorporated ProductFolderLinks:LM49120 LM49120TLEVAL LM49120, LM49120TLEVAL www.ti.com SNAS431C–JUNE2008–REVISEDMAY2013 I2C Timing Characteristics 2.2V ≤ I2C_V ≤ 5.5V(1)(2) DD ThefollowingspecificationsapplyforV =5.0Vand3.3V,T =25°C,2.2V≤I2C_V ≤5.5V,unlessotherwisespecified. DD A DD LM49120 Units Parameter TestConditions Typ(3) Limits (4) (Limits) t I2CClockPeriod 2.5 µs(min) 1 t I2CDataSetupTime 100 ns(min) 2 t I2CDataStableTime 0 ns(min) 3 t StartConditionTime 100 ns(min) 4 t StopConditionTime 100 ns(min) 5 t I2CDataHoldTime 100 ns(min) 6 V I2CInputVoltageHigh 0.7xI2CV V(min) IH DD V I2CInputVoltageLow 0.3xI2CV V(max) IL DD (1) “AbsoluteMaximumRatings”indicatelimitsbeyondwhichdamagetothedevicemayoccur,includinginoperabilityanddegradationof devicereliabilityand/orperformance.Functionaloperationofthedeviceand/ornon-degradationattheAbsoluteMaximumRatingsor otherconditionsbeyondthoseindicatedintheRecommendedOperatingConditionsisnotimplied.TheRecommendedOperating Conditionsindicateconditionsatwhichthedeviceisfunctionalandthedeviceshouldnotbeoperatedbeyondsuchconditions.All voltagesaremeasuredwithrespecttothegroundpin,unlessotherwisespecified. (2) TheElectricalCharacteristicstableslistspacifiedspecificationsunderthelistedRecommendedOperatingConditionsexceptas otherwisemodifiedorspecifiedbytheElectricalCharacteristicsConditionsand/orNotes.Typicalspecificationsareestimationsonlyand arenotensured (3) TypicalvaluesrepresentmostlikelyparametricnormsatT =+25ºC,andattheRecommendedOperationConditionsatthetimeof A productcharacterizationandarenotensured. (4) Datasheetmin/maxspecificationlimitsareensuredbytestorstatisticalanalysis. I2C Timing Characteristics 1.7V ≤ I2C_V ≤ 2.2V(1)(2) DD ThefollowingspecificationsapplyforV =5.0Vand3.3V,T =25°C,1.7V≤I2C_V ≤2.2V,unlessotherwisespecified. DD A DD LM49120 Units Parameter TestConditions Typ(3) Limits (4) (Limits) t I2CClockPeriod 2.5 µs(min) 1 t I2CDataSetupTime 250 ns(min) 2 t I2CDataStableTime 0 ns(min) 3 t StartConditionTime 250 ns(min) 4 t StopConditionTime 250 ns(min) 5 t I2CDataHoldTime 250 ns(min) 6 V I2CInputVoltageHigh 0.7xI2CV V(min) IH DD V I2CInputVoltageLow 0.3xI2CV V(max) IL DD (1) “AbsoluteMaximumRatings”indicatelimitsbeyondwhichdamagetothedevicemayoccur,includinginoperabilityanddegradationof devicereliabilityand/orperformance.Functionaloperationofthedeviceand/ornon-degradationattheAbsoluteMaximumRatingsor otherconditionsbeyondthoseindicatedintheRecommendedOperatingConditionsisnotimplied.TheRecommendedOperating Conditionsindicateconditionsatwhichthedeviceisfunctionalandthedeviceshouldnotbeoperatedbeyondsuchconditions.All voltagesaremeasuredwithrespecttothegroundpin,unlessotherwisespecified. (2) TheElectricalCharacteristicstableslistspacifiedspecificationsunderthelistedRecommendedOperatingConditionsexceptas otherwisemodifiedorspecifiedbytheElectricalCharacteristicsConditionsand/orNotes.Typicalspecificationsareestimationsonlyand arenotensured (3) TypicalvaluesrepresentmostlikelyparametricnormsatT =+25ºC,andattheRecommendedOperationConditionsatthetimeof A productcharacterizationandarenotensured. (4) Datasheetmin/maxspecificationlimitsareensuredbytestorstatisticalanalysis. Copyright©2008–2013,TexasInstrumentsIncorporated SubmitDocumentationFeedback 9 ProductFolderLinks:LM49120 LM49120TLEVAL LM49120, LM49120TLEVAL SNAS431C–JUNE2008–REVISEDMAY2013 www.ti.com Typical Performance Characteristics FilterBW=22kHz Crosstalk Crosstalk vs vs Frequency Frequency V =3.3V,R =32Ω,P =12mW, V =3.3V,R =32Ω,P =12mW, DD L O DD L O f=1kHz,Mode8,OCL f=1kHz,Mode8,SE 0 0 -10 -10 -20 -20 -30 -30 B) B) d -40 d -40 K ( K ( AL -50 AL -50 OSST -60 Right to Left OSST -60 Right to Left R R C -70 Left to Right C -70 Left to Right -80 -80 -90 -90 -100 -100 20 200 2k 20k 20 200 2k 20k FREQUENCY (Hz) FREQUENCY (Hz) Figure4. Figure5. Crosstalk Crosstalk vs vs Frequency Frequency V =5V,R =32Ω,P =30mW, V =5V,R =32Ω,P =30mW, DD L O DD L O f=1kHz,Mode8,OCL f=1kHz,Mode8,SE 0 0 -10 -10 -20 -20 -30 -30 ALK (dB) --5400 ALK (dB) --5400 OSST -60 Right to Left OSST -60 Right to Left CR -70 Left to Right CR -70 Left to Right -80 -80 -90 -90 -100 -100 20 200 2k 20k 20 200 2k 20k FREQUENCY (Hz) FREQUENCY (Hz) Figure6. Figure7. OutputPower OutputPower vs vs SupplyVoltage SupplyVoltage V =3.3V,R =32Ω V =5V,R =8Ω DD L DD L f=1kHz,Mode8,OCL f=1kHz,Mode1,Speaker 140 2500 120 2000 W) 100 W) m m ER ( 60 THD+N = 10% ER ( 1500 W W O O THD+N = 10% T P 40 T P 1000 U U P P UT 20 UT O THD+N = 1% O THD+N = 1% 500 10 0 0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 2.5 3.0 3.5 4.0 4.5 5.0 5.5 SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) Figure8. Figure9. 10 SubmitDocumentationFeedback Copyright©2008–2013,TexasInstrumentsIncorporated ProductFolderLinks:LM49120 LM49120TLEVAL

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Loudspeaker Amplifier and Stereo OCL/SE Headphone Amplifier Independent Speaker and Headphone Gain to as a bridge-tied load (BTL).
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