Mono Audio w/Class G Headphone Amp, Class D Spkr Amp, Noise Gate & Spkr Protect

31 Pages·2017·2.23 MB·English

LM49153
www.ti.com SNAS496C–JANUARY2011–REVISEDMAY2013
LM49153 Boomer™ Mono Audio Subsystem with Class G Headphone Amplifier, Class D
Speaker Amplifier, Noise Gate and Speaker Protection
CheckforSamples:LM49153
FEATURES DESCRIPTION
1
• ClassGGroundReferencedHeadphone The LM49153 is a fully integrated audio subsystem
23 designed for portable handheld applications such as
Outputs
cellular phones. Part of Texas Instruments'
• HighEfficiencyClassDAmplifier withSpread
PowerWise family of products, the LM49153
Spectrum combines an earpiece switch, a high efficiency 25mW
• NoClip class G headphone amplifier, and a high efficiency
1.35WclassDloudspeaker intoasingledevice.
• SpeakerProtection
• NoiseGate The headphone amplifiers feature Texas Instruments'
class G ground referenced architecture that creates a
• I2CVolumeand ModeControl
ground-referenced output with dynamic supply rails
• AdvancedClick-and-PopSuppression for optimum efficiency. The class D amplifier features
• Micro-PowerShutdown an ALC (Automatic Level Control) with a noise gate
that providesbothno-clipandspeakerprotection.
APPLICATIONS
Mode selection, shutdown control, and volume are
• FeaturePhones controlledthroughanI2Ccompatibleinterface.
• SmartPhones Click and pop suppression eliminates audible
transients on power-up/down and during shutdown.
KEY SPECIFICATIONS The LM49153 is available in an ultra-small 25-bump
0.4mmpitchDSBGApackage(2.30mmx2.42mm).
• ClassGHeadphoneAmplifier,
HPV =1.8V,R =32Ω
DD L
– IDDQ ,1.2mA(Typ)
HP
– P ,THD+N≤ 1%,25mW(Typ)
OUT
– HPV ,0.5mV(Typ)
OS
• MonoClassDSpeakerAmplifier,
R =8Ω,THD+N <1%
L
– P ,LSV =5.0V,1.35W(Typ)
OUT DD
– P ,LSV =3.6V,680mW(Typ)
OUT DD
– Efficiency88%(Typ)
1
Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof
TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
BoomerisatrademarkofTexasInstruments.
2
Allothertrademarksarethepropertyoftheirrespectiveowners.
3
PRODUCTIONDATAinformationiscurrentasofpublicationdate. Copyright©2011–2013,TexasInstrumentsIncorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarilyincludetestingofallparameters.
LM49153
SNAS496C–JANUARY2011–REVISEDMAY2013 www.ti.com
Typical Application
2.7V - 5.5V
1 PF 10 PF
VDD LSVDD
10: EP+ EPOUT+
EP- EPOUT-
10:
1 PF
INM+/INL1 LSOUT+
POWER LIMITER, CLASS D
NO CLIP AND +12 dB to
INM-/INR1 NOISE GATE +18 dB LSOUT-
VOLUME
1 PF -80 dB to
+12 dB SET
0.22 PF
INL2 OUTPUT
MUX MODE
SELECT
VOLUME
-80 dB to -12 dB HPL
+12 dB
to 6 dB
0.22 PF
INR2
-12 dB
to 6 dB HPR
BYPASS
BIAS HPVDD
2.2 PF
CPVDD
SDA LEVEL DETECT 2.2 PF
I2C INTERFACE CLASS G 4.7 PF
SCL CHARGE PUMP
30121063 GND CPVSS C1N C1P CPGND
4.7 PF
2.2 PF
Figure1. TypicalAudioAmplifierApplicationCircuit
2 SubmitDocumentationFeedback Copyright©2011–2013,TexasInstrumentsIncorporated
ProductFolderLinks:LM49153
LM49153
www.ti.com SNAS496C–JANUARY2011–REVISEDMAY2013
Connection Diagram
5 LSOUT+ LSVDD EPOUT+ EPOUT- ININML+-/
4 LSOUT- SET EP+ EP- INM-/
INR1
3 CPGND SCL INL2 INR2 VDD
2 C1P C1N SDA BYPASS GND
1 HPVDD CPVSS CPVDD HPR HPL
A B C D E
Figure2. 25BumpDSBGAPackage
TopView
SeePackageNumberYFQ0025
BUMPDESCRIPTION
Bump Name Description
A1 HPV HeadphonePowerSupply
DD
A2 C1P ChargePumpFlyingCapacitorPositiveTerminal
A3 CPGND ChargePumpGround
A4 LSOUT- LoudspeakerInvertingOutput
A5 LSOUT+ LoudspeakerNon-InvertingOutput
B1 CPV ChargePumpOutput
SS
B2 C1N ChargePumpFlyingCapacitorNegativeTerminal
B3 SCL I2CSerialClockInput
B4 SET ALCTimingSet
B5 LSV LoudspeakerPowerSupply
DD
C1 CPV ChargePumpPowerSupply
DD
C2 SDA I2CSerialDataInput
C3 INL2 LeftChannelInput2
C4 EP+ EarpieceNon-InvertingInput
C5 EPOUT+ EarpieceNon-InvertingOutput
D1 HPR RightChannelHeadphoneOutput
D2 BYPASS Mid-RailBiasBypassNode
D3 INR2 RightChannelInput2
D4 EP- EarpieceInvertingInput
D5 EPOUT- EarpieceInvertingOutput
E1 HPL LeftChannelHeadphoneOutput
E2 GND Ground
E3 V PowerSupply
DD
E4 INM-/INR1 MonoChannelInvertingInput/RightChannelInput1
E5 INM+/INL1 MonoChannelNon-InvertingInput/LeftChannelInput1
Copyright©2011–2013,TexasInstrumentsIncorporated SubmitDocumentationFeedback 3
ProductFolderLinks:LM49153
LM49153
SNAS496C–JANUARY2011–REVISEDMAY2013 www.ti.com
Thesedeviceshavelimitedbuilt-inESDprotection.Theleadsshouldbeshortedtogetherorthedeviceplacedinconductivefoam
duringstorageorhandlingtopreventelectrostaticdamagetotheMOSgates.
Absolute Maximum Ratings(1)(2)(3)
SupplyVoltage(V ,LSV )(1) 6V
DD DD
SupplyVoltage(HPV )(1) 3V
DD
StorageTemperature −635°Cto+150°C
InputVoltage −0.3toV +0.3
DD
PowerDissipation(4) InternallyLimited
ESDRating(5) 2.0kV
ESDRating(6) 200V
JunctionTemperature 150°C
ThermalResistance θ (YFQ0025) 46°C/W
JA
SolderingInformation SeeAN-1112(SNVA009)“DSBGAWaferLevelChipScalePackage”
(1) “AbsoluteMaximumRatings”indicatelimitsbeyondwhichdamagetothedevicemayoccur,includinginoperabilityanddegradationof
devicereliabilityand/orperformance.Functionaloperationofthedeviceand/ornon-degradationattheAbsoluteMaximumRatingsor
otherconditionsbeyondthoseindicatedintheRecommendedOperatingConditionsisnotimplied.TheRecommendedOperating
Conditionsindicateconditionsatwhichthedeviceisfunctionalandthedeviceshouldnotbeoperatedbeyondsuchconditions.All
voltagesaremeasuredwithrespecttothegroundpin,unlessotherwisespecified
(2) TheElectricalCharacteristicstableslistensuredspecificationsunderthelistedRecommendedOperatingConditionsexceptas
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
T ≤T ≤T −40°C≤T ≤+85°C
MIN A MAX A
TemperatureRange SupplyVoltage(V ,LSV ) 2.7V≤V ≤5.5V
DD DD DD
SupplyVoltage(HPV ) 1.7V≤HPV ≤2.0V
DD DD
4 SubmitDocumentationFeedback Copyright©2011–2013,TexasInstrumentsIncorporated
ProductFolderLinks:LM49153
LM49153
www.ti.com SNAS496C–JANUARY2011–REVISEDMAY2013
Electrical Characteristics V = 3.6V, HPV = 1.8V(1)(2)
DD DD
ThefollowingspecificationsapplyforV =LSV ,A =0dB,R =15μH+8Ω+15µH(Loudspeaker),R =32Ω(Headphone),
DD DD V L L
C =0.1µF,f=1kHz,ALCoff,unlessotherwisespecified.LimitsapplyforT =25°C.(3).
SET A
LM49153 Units
Symbol Parameter Conditions
Typical(4) Limits(5) (Limits)
V =0,NoLoad
IN
EPReceiver
0.3 2.5 μA(max)
(OutputModeBitEPBypass=1)
LSonly(Mode2)
V ,LSV 3.0 4.3 mA(max)
DD DD
HPV 0 mA
I SupplyCurrent DD
DD
HPonly(Mode1)
V +LSV 1.8 2.5 mA(max)
DD DD
HPV 1.2 1.6 mA(max)
DD
LS+HP(Mode6)
V +LSV 4.3 5.5 mA(max)
DD DD
HPV 1.2 1.6 mA(max)
DD
I ShutdownCurrent V =V =3.6V 0.3 2.5 µA(max)
SD SCL SDA
V =0,Mode3,6,9
IN
V OutputOffsetVoltage LSOutput,R =8Ω,A =12dB 9 mV
OS L V
HPOutput,R =32Ω,A =0dB 0.5 mV
L V
HPMode,C =2.2μF
BYPASS
t WakeUpTime Normalturnontime 32 ms
WU
Fastturnontime 18 ms
Mute –86 dB
MinimumGainSetting –51 dB(max)
–52.5
(monoinput) –54 dB(min)
12.5 dB(max)
MaximumGainSetting(monoinput) 12
A VolumeControl 11.5 dB(min)
VOL
dB(max)
MinimumGainSetting(stereoinput) –80
dB(min)
dB(max)
MaximumGainSetting(stereoinput) 18
dB(min)
(1) “AbsoluteMaximumRatings”indicatelimitsbeyondwhichdamagetothedevicemayoccur,includinginoperabilityanddegradationof
devicereliabilityand/orperformance.Functionaloperationofthedeviceand/ornon-degradationattheAbsoluteMaximumRatingsor
otherconditionsbeyondthoseindicatedintheRecommendedOperatingConditionsisnotimplied.TheRecommendedOperating
Conditionsindicateconditionsatwhichthedeviceisfunctionalandthedeviceshouldnotbeoperatedbeyondsuchconditions.All
voltagesaremeasuredwithrespecttothegroundpin,unlessotherwisespecified
(2) TheElectricalCharacteristicstableslistensuredspecificationsunderthelistedRecommendedOperatingConditionsexceptas
otherwisemodifiedorspecifiedbytheElectricalCharacteristicsConditionsand/orNotes.Typicalspecificationsareestimationsonlyand
arenotensured.
(3) LoudspeakerR isaresistiveloadinserieswithtwoinductorstosimulateanactualspeakerload.ForR =8Ω,theloadis15µH+8Ω,
L L
+15µH.ForR =4Ω,theloadis15µH+4Ω+15µH.
L
(4) TypicalvaluesrepresentmostlikelyparametricnormsatT =+25ºC,andattheRecommendedOperationConditionsatthetimeof
A
productcharacterizationandarenotspecified.
(5) Datasheetmin/maxspecificationlimitsarespecifiedbytestorstatisticalanalysis.
Copyright©2011–2013,TexasInstrumentsIncorporated SubmitDocumentationFeedback 5
ProductFolderLinks:LM49153
LM49153
SNAS496C–JANUARY2011–REVISEDMAY2013 www.ti.com
Electrical Characteristics V = 3.6V, HPV = 1.8V(1)(2) (continued)
DD DD
ThefollowingspecificationsapplyforV =LSV ,A =0dB,R =15μH+8Ω+15µH(Loudspeaker),R =32Ω(Headphone),
DD DD V L L
C =0.1µF,f=1kHz,ALCoff,unlessotherwisespecified.LimitsapplyforT =25°C.(3).
SET A
LM49153 Units
Symbol Parameter Conditions
Typical(4) Limits(5) (Limits)
LSMode
Gain0 12 dB
Gain1 18 dB
HPMode
5 dB(min)
Gain0 6
7 dB(max)
Gain1 3 dB
A Gain
V
Gain2 0 dB
Gain3 –1.5 dB
Gain4 –3 dB
Gain5 –6 dB
Gain6 –9 dB
Gain7 –13 dB(min)
–12
–11 dB(max)
LSOutput –80 dB
A MuteAttention
VMUTE
HPOutput –98 dB
AnalogSwitch 4.5 6 Ω(max)
MONO,RIN,LIN,Inputs
RIN InputResistance MaximumGainSetting 13 11 kΩ(min)
15.5 kΩ(max)
90 kΩ(min)
MinimumGainSetting 110
130 kΩ(max)
LSMode,A =18dB,R =8Ω
V L
LSV =3.3V 570 mW
DD
LSV =3.6V 680 620 mW(min)
DD
LSV =4.2V 935 mW
DD
P OutputPower
O
LSV =5.0V 1350 mW
DD
HPMode,A =6dB
V
R =16Ω 25 mW
L
R =32Ω 25 22 mW(min)
L
f=1kHz
LSMode,P =250mW,monoinput 0.02 %
O
THD+N TotalHarmonicDistortion+Noise
HPMode,P =12mW,Stereoinput 0.02 %
O
EPBypassMode,R =32Ω 0.05 %
L
f=217Hz,V =200mV ,
RIPPLE PP
C =2.2µF,InputsACGND
B
LSMode,monoinput,A =12dB 72 dB
V
PSRR PowerSupplyRejectionRatio LSMode,stereoinput,AV=12dB 64 dB
(Outputreferred)
HPMode,monoinput,rippleonV 94 dB
DD
HPMode,monoinput,rippleonHPV 81 dB
DD
HPMode,stereoinput,rippleonV 80 dB
DD
V =1V ,f =217Hz,monoinput,A =0dB
RIPPLE P-P RIPPLE V
CMRR CommonModeRejectionRatio LSMode2 38 dB
HPMode1 51 dB
η Efficiency LSMode,THD+N=1% 88 %
X Crosstalk P =12mW,f=1kHz 80 dB
TALK O
6 SubmitDocumentationFeedback Copyright©2011–2013,TexasInstrumentsIncorporated
ProductFolderLinks:LM49153
LM49153
www.ti.com SNAS496C–JANUARY2011–REVISEDMAY2013
Electrical Characteristics V = 3.6V, HPV = 1.8V(1)(2) (continued)
DD DD
ThefollowingspecificationsapplyforV =LSV ,A =0dB,R =15μH+8Ω+15µH(Loudspeaker),R =32Ω(Headphone),
DD DD V L L
C =0.1µF,f=1kHz,ALCoff,unlessotherwisespecified.LimitsapplyforT =25°C.(3).
SET A
LM49153 Units
Symbol Parameter Conditions
Typical(4) Limits(5) (Limits)
A-weighted,InputsACGND
LSMode,monoinput 46 µV
ε OutputNoise LSMode,stereoinput 52 µV
OS
HPMode,monoinput 11 µV
HPMode,stereoinput 11 µV
LSMode,P =680mW,A-weighted,Mono 94 dB
SNR SignaltoNoiseRatio O
HPMode,P =25mW,A-weighted 98 dB
O
I2C=1 0.1 ms
tA NoiseGateAttackTime I2C=0 0.9 ms
I2C=0 1.2 s
tR NoiseGateReleaseTime I2C=1 2.1 s
Low010 7.3 V
P-P
CC ClipControl Medium011 7.8 V
P-P
High100 8.1 V
P-P
LSMode1,THD+N≤1%,VoltageLevel(6)
001 4 V
P-P
010 4.8 V
P-P
P OutputPowerLimit 011 5.6 V
LIMIT P-P
100 6.4 V
P-P
101 7.2 V
P-P
110 8.0 V
P-P
t ALCAttackTime 0.5 ms
A
t ALCReleaseTime 200 ms
R
(6) TheLM49153ALClimitstheoutputpowertowhicheverislower,thesupplyvoltageoroutputpowerlimit.
I2C Interface Characteristics V = 3.6V(1)(2)
DD
ThefollowingspecificationsapplyforA =0dB,R =8Ω,f=1kHz,unlessotherwisespecified.LimitsapplyforT =25°C.
V L A
LM49153
Units
Symbol Parameter Conditions Typical Limits (Limits)
(3) (4)
t SCLPeriod 2.5 µs(min)
1
t SDASetupTime 250 ns(min)
2
t SDAStableTime 0 ns(min)
3
t StartConditionTime 250 ns(min)
4
t StopConditionTime 250 ns(min)
5
V InputHighVoltage 1.2 V(min)
IH
V InputLowVoltage 0.6 V(max)
IL
(1) “AbsoluteMaximumRatings”indicatelimitsbeyondwhichdamagetothedevicemayoccur,includinginoperabilityanddegradationof
devicereliabilityand/orperformance.Functionaloperationofthedeviceand/ornon-degradationattheAbsoluteMaximumRatingsor
otherconditionsbeyondthoseindicatedintheRecommendedOperatingConditionsisnotimplied.TheRecommendedOperating
Conditionsindicateconditionsatwhichthedeviceisfunctionalandthedeviceshouldnotbeoperatedbeyondsuchconditions.All
voltagesaremeasuredwithrespecttothegroundpin,unlessotherwisespecified
(2) TheElectricalCharacteristicstableslistensuredspecificationsunderthelistedRecommendedOperatingConditionsexceptas
otherwisemodifiedorspecifiedbytheElectricalCharacteristicsConditionsand/orNotes.Typicalspecificationsareestimationsonlyand
arenotensured.
(3) TypicalvaluesrepresentmostlikelyparametricnormsatT =+25ºC,andattheRecommendedOperationConditionsatthetimeof
A
productcharacterizationandarenotspecified.
(4) Datasheetmin/maxspecificationlimitsarespecifiedbytestorstatisticalanalysis.
Copyright©2011–2013,TexasInstrumentsIncorporated SubmitDocumentationFeedback 7
ProductFolderLinks:LM49153
LM49153
SNAS496C–JANUARY2011–REVISEDMAY2013 www.ti.com
Typical Performance Characteristics(1)
THD+NvsOutputPower THD+NvsOutputPower
V =3.6V,R =8Ω,f=1kHz V =4.2V,R =8Ω,f=1kHz
DD L DD L
A =18dB,Mode2 A =18dB,Mode2
V V
10 10
5 5
2 2
1 1
)% )%
( N 0.5 ( N 0.5
+ +
D 0.2 D 0.2
H H
T T
0.1 0.1
0.05 0.05
0.02 0.02
0.01 0.01
1m 2m 5m10m20m50m100m200m500m1 1m2m 5m10m20m50m100m200m500m1 2
OUTPUTPOWER (W) OUTPUTPOWER (W)
Figure3. Figure4.
THD+NvsOutputPower THD+NvsOutputPower
V =5.0V,R =8Ω,f=1kHz V =3.6V,HPV =1.8V,R =16Ω,f=1kHz
DD L DD DD L
A =18dB,Mode2 A =6dB,Mode4
V V
10 100
5
2 10
1
)% %)
( N + DH 00..25 HD+N ( 1
T T
0.1
0.05 0.1
0.02
0.01 0.01
1m2m 5m10m20m50m100m200m500m1 2 0.00010.001 0.01 0.1 1 10 100
OUTPUTPOWER (W) OUTPUTPOWER (mW)
Figure5. Figure6.
THD+NvsOutputPower
V =3.6V,HPV =1.8V,R =32Ω,f=1kHz THD+NvsOutputPower
DD DD L
A =6dB,Mode4 R =32Ω,f=1kHz,EarpieceMode
V L
100 100
10 10
%) %)
D+N ( 1 D+N ( 1
H H
T T
0.1 0.1
0.01
0.01
0.00010.001 0.01 0.1 1 10 100 0.001 0.01 0.1
OUTPUTPOWER (mW)
OUTPUTPOWER (W)
Figure7. Figure8.
(1) LoudspeakerR isaresistiveloadinserieswithtwoinductorstosimulateanactualspeakerload.ForR =8Ω,theloadis15µH+8Ω,
L L
+15µH.ForR =4Ω,theloadis15µH+4Ω+15µH.
L
8 SubmitDocumentationFeedback Copyright©2011–2013,TexasInstrumentsIncorporated
ProductFolderLinks:LM49153
LM49153
www.ti.com SNAS496C–JANUARY2011–REVISEDMAY2013
Typical Performance Characteristics(1) (continued)
PSRRvsFREQUENCY PSRRvsFREQUENCY
V =3.6V,HPV =1.8V,V =200mV V =3.6V,HPV =1.8V,V =200mV
DD DD DD-RIPPLE P-P DD DD DD-RIPPLE P-P
R =8Ω,MonoInput,LSMode R =8Ω,StereoInput,LSMode
L L
0 0
-10 -10
-20
-20
-30
-30
B) -40 B)
d d -40
R ( -50 R (
R R -50
PS -60 PS
-60
-70
-80 -70
-90 -80
-100 -90
10 100 1000 10000 100000 10 100 1000 10000 100000
FREQUENCY(Hz) FREQUENCY(Hz)
Figure9. Figure10.
PSRRvsFREQUENCY PSRRvsFREQUENCY
V =3.6V,HPV =1.8V,V =200mV V =3.6V,HPV =1.8V,HPV =200mV
DD DD DD-RIPPLE P-P DD DD DD-RIPPLE P-P
R =32Ω,MonoInput,HPMode R =32Ω,MonoInput,HPMode
L L
0 0
-10
-20
-20
-30
-40
R (dB) -60 R (dB) --5400
R R
PS PS -60
-80
-70
-80
-100
-90
-120 -100
10 100 1000 10000 100000 10 100 1000 10000 100000
FREQUENCY(Hz) FREQUENCY(Hz)
Figure11. Figure12.
SUPPLYCURRENTvsSUPPLYVOLTAGE SUPPLYCURRENTvsSUPPLYVOLTAGE
NoLoad,LoudspeakerMode2 NoLoad,LoudspeakerMode4
8 4
3.5
7
A) A) 3
m m
NT ( 6 NT ( 2.5
E E
R R
R 5 R 2
U U
C C
Y Y 1.5
PL 4 PL
P P
U U 1
S S
3
0.5
2 0
2 3 4 5 6 1.7 1.8 1.9 2
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
Figure13. Figure14.
Copyright©2011–2013,TexasInstrumentsIncorporated SubmitDocumentationFeedback 9
ProductFolderLinks:LM49153
LM49153
SNAS496C–JANUARY2011–REVISEDMAY2013 www.ti.com
Typical Performance Characteristics(1) (continued)
POWERDISSIPATIONvsOUTPUTPOWER
EFFICIENCYvsOUTPUTPOWER V =3.6V,HPV =1.8V,R =32Ω,f=1kHz
DD DD L
R =8Ω,f=1kHz,LoudspeakerMode2 LoudspeakerMode2
L
100 100
80 W) 80
m
N (
%) 60 VDD = 3.6V TIO 60
Efficiency ( 40 VDD = 4.2V R DISSIPA 40
E
VDD = 5V W
20 PO 20
0 0
0 200 400 600 800 1000 1200 1400 0 5 10 15 20 25 30 35 40
OUTPUT POWER (mW) OUTPUT POWER (mW)
Figure15. Figure16.
POWERDISSIPATIONvsOUTPUTPOWER
R =32Ω,f=1kHz OUTPUTPOWERvsSUPPLYVOLTAGE
L
LoudspeakerMode2 R =8Ω,f=1kHz
L
200 2
1.75
W) THD+N = 10%
m 150 W) 1.5
TION ( WER ( 1.25
DISSIPA 100 VDD = 5V PUT PO 0.715
ER VDD = 4.2V UT THD+N = 1%
OW 50 O 0.5
P
VDD = 3.6V 0.25
0 0
0 400 800 1200 1600 2000 2400 2.7 3.2 3.7 4.2 4.7 5.2
OUTPUT POWER (mW) SUPPLY VOLTAGE (V)
Figure17. Figure18.
OUTPUTPOWERvsSUPPLYVOLTAGE
R =32Ω,f=1kHz
L
50
THD+N = 10%
40
W)
m
R ( 30
E
W
O
P
T 20
U
P THD+N = 1%
T
U
O
10
0
1.7 1.75 1.8 1.85 1.9 1.95 2
SUPPLY VOLTAGE (V)
Figure19.
10 SubmitDocumentationFeedback Copyright©2011–2013,TexasInstrumentsIncorporated
ProductFolderLinks:LM49153