2024年4月27日发(作者：蔺春芳)
TPA6120A2
SLOS431–MARCH2004
HIGHFIDELITYHEADPHONEAMPLIFIER
FEATURES
•
•
•
•
•
•
•
•
•
•
80mWinto600ΩFroma±12-VSupplyat
0.00014%THD+N
Current-FeedbackArchitecture
Greaterthan120dBofDynamicRange
SNRof120dB
OutputVoltageNoiseof5µVrmsat
Gain=2V/V
PowerSupplyRange:±5Vto±15V
1300V/µsSlewRate
DifferentialInputs
IndependentPowerSuppliesforLow
Crosstalk
ShortCircuitandThermalProtection
DESCRIPTION
TheTPA6120A2isahighfidelityaudioamplifierbuilt
gh
bandwidth,extremelylownoisedeviceisidealfor
terthan120dB
ofdynamicrangeexceedsthecapabilitiesofthe
humanear,ensuringthatnothingaudibleislostdue
iddesignandperformanceof
theTPA6120A2ensuresthatmusic,nottheamplifier,
isheard.
Threekeyfeaturesmakecurrent-feedbackamplifiers
stfeatureisthehigh
slewratethatpreventsoddorderdistortion
ondfeatureiscurrent-on-demand
attheoutputthatenablestheamplifiertorespond
quicklyandlinearlywhennecessarywithoutriskof
rgeamountsofoutput
poweraresuddenlyneeded,theamplifiercanre-
spondextremelyquicklywithoutraisingthenoise
floorofthesystemanddegradingthesignal-to-noise
rdfeatureisthegain-independentfre-
quencyresponsethatallowsthefullbandwidthofthe
amplifiertobeusedoverawiderangeofgain
essloopgaindoesnotdeteriorateat
arateof20dB/decade.
C
F
2.7 nF
1 kΩ
OUT A
R
I
1 kΩ
OUT B
R
I
1 kΩ
R
F
1 kΩ
2.7 nF
2.7 nF
LIN−
LIN+
R
F
1 kΩ
APPLICATIONS
•
•
•
•
•
ProfessionalAudioEquipment
MixingBoards
HeadphoneDistributionAmplifiers
HeadphoneDrivers
MicrophonePreamplifiers
Filter and
I/V Gain Stage
1/2 OPA4134
AUDIO DAC
R
F
LRCK
PCM
Audio
Data
Source
BCK
DATA
SCK
I
OUT
L+
+IN B
−IN B
I
OUT
L−
−IN A
+IN A
Stereo Hi−Fi
Headphone Driver
TPA6120A2
R
F
1 kΩ
R
O
10 Ω
LOUT
ZEROL
ZEROR
MS
Controller
MDI
MC
MDO
RST
PCM1792
or
DSD1792
C
F
C
F
R
F
1/2 OPA4134
R
F
1 kΩ
OUT C
R
I
1 kΩ
OUT D
R
I
1 kΩ
R
F
C
F
1 kΩ
2.7 nF
R
F
1 kΩ
RIN+
RIN−
R
O
10 Ω
1 kΩ
I
OUT
R+
+IN C
−IN C
+IN D
ROUT
DYR > 120 dB
for Whole
System!
I
OUT
R−
−IN D
Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas
Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
PowerPADisatrademarkofTexasInstruments.
PRODUCTIONDATAinformationiscurrentasofpublicationdate.
ProductsconformtospecificationsperthetermsoftheTexas
tionprocessingdoesnot
necessarilyincludetestingofallparameters.
Copyright©2004,TexasInstrumentsIncorporated
TPA6120A2
SLOS431–MARCH2004
dsshouldbeshortedtogetherorthedeviceplacedinconductivefoam
duringstorageorhandlingtopreventelectrostaticdamage.
ABSOLUTEMAXIMUMRATINGS
overoperatingfree-airtemperaturerange(unlessotherwisenoted)
Supplyvoltage,V
CC+
toV
CC-
Inputvoltage,V
I
(2)
Differentialinputvoltage,V
ID
Minimumloadimpedance
Continuoustotalpowerdissipation
Operatingfree–airtemperaturerange,T
A
Operatingjunctiontemperaturerange,T
J
(3)
Storagetemperaturerange,T
stg
Leadtemperature1,6mm(1/16inch)fromcasefor10seconds
(1)
(2)
(3)
(1)
TPA6120A2
33V
±V
CC
6V
8Ω
SeeDissipationRatingTable
-40°Cto85°C
-40°Cto150°C
-40°Cto125°C
235°C
Stressesbeyondthoselistedunder“absolutemaximumratings”restressratings
only,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunder“recommendedoperating
conditions”retoabsolute–maximum–ratedconditionsforextendedperiodsmayaffectdevicereliability.
WhentheTPA6120A2ispowereddown,theinputsourcevoltagemustbekeptbelow600-mVpeak.
Ttsasaheatsinkandmustbeconnectedtoa
etodosomayresultinexceedingthemaximumjunctiontemperaturethat
echnicalBriefSLMA002formoreinformationaboututilizingthePowerPADthermally
enhancedpackage.
DISSIPATIONRATINGTABLE
PACKAGE
DWP
(1)
θ
JA
(1)
(°C/W)
44.4
θ
JC
(°C/W)
33.8
T
A
=25°C
POWERRATING
2.8W
TPowerPAD
ThermallyEnhancedPackageapplicationnote(SLMA002)
AVAILABLEOPTIONS
T
A
-40°Cto85°C
(1)
PACKAGE
DWP
(1)
PARTNUMBER
TPA6120A2DWP
SYMBOL
6120A2
ratapedandreeledpart,addthesuffixR
,TPA6120A2DWPR).
RECOMMENDEDOPERATINGCONDITIONS
MIN
Supplyvoltage,V
CC+
andV
CC-
Loadimpedance
Operatingfree–airtemperature,T
A
SplitSupply
SingleSupply
V
CC
=±5Vor±15V
±5
10
16
-4085
MAX
±15
30
UNIT
V
Ω
°C
2
2024年4月27日发(作者：蔺春芳)
TPA6120A2
SLOS431–MARCH2004
HIGHFIDELITYHEADPHONEAMPLIFIER
FEATURES
•
•
•
•
•
•
•
•
•
•
80mWinto600ΩFroma±12-VSupplyat
0.00014%THD+N
Current-FeedbackArchitecture
Greaterthan120dBofDynamicRange
SNRof120dB
OutputVoltageNoiseof5µVrmsat
Gain=2V/V
PowerSupplyRange:±5Vto±15V
1300V/µsSlewRate
DifferentialInputs
IndependentPowerSuppliesforLow
Crosstalk
ShortCircuitandThermalProtection
DESCRIPTION
TheTPA6120A2isahighfidelityaudioamplifierbuilt
gh
bandwidth,extremelylownoisedeviceisidealfor
terthan120dB
ofdynamicrangeexceedsthecapabilitiesofthe
humanear,ensuringthatnothingaudibleislostdue
iddesignandperformanceof
theTPA6120A2ensuresthatmusic,nottheamplifier,
isheard.
Threekeyfeaturesmakecurrent-feedbackamplifiers
stfeatureisthehigh
slewratethatpreventsoddorderdistortion
ondfeatureiscurrent-on-demand
attheoutputthatenablestheamplifiertorespond
quicklyandlinearlywhennecessarywithoutriskof
rgeamountsofoutput
poweraresuddenlyneeded,theamplifiercanre-
spondextremelyquicklywithoutraisingthenoise
floorofthesystemanddegradingthesignal-to-noise
rdfeatureisthegain-independentfre-
quencyresponsethatallowsthefullbandwidthofthe
amplifiertobeusedoverawiderangeofgain
essloopgaindoesnotdeteriorateat
arateof20dB/decade.
C
F
2.7 nF
1 kΩ
OUT A
R
I
1 kΩ
OUT B
R
I
1 kΩ
R
F
1 kΩ
2.7 nF
2.7 nF
LIN−
LIN+
R
F
1 kΩ
APPLICATIONS
•
•
•
•
•
ProfessionalAudioEquipment
MixingBoards
HeadphoneDistributionAmplifiers
HeadphoneDrivers
MicrophonePreamplifiers
Filter and
I/V Gain Stage
1/2 OPA4134
AUDIO DAC
R
F
LRCK
PCM
Audio
Data
Source
BCK
DATA
SCK
I
OUT
L+
+IN B
−IN B
I
OUT
L−
−IN A
+IN A
Stereo Hi−Fi
Headphone Driver
TPA6120A2
R
F
1 kΩ
R
O
10 Ω
LOUT
ZEROL
ZEROR
MS
Controller
MDI
MC
MDO
RST
PCM1792
or
DSD1792
C
F
C
F
R
F
1/2 OPA4134
R
F
1 kΩ
OUT C
R
I
1 kΩ
OUT D
R
I
1 kΩ
R
F
C
F
1 kΩ
2.7 nF
R
F
1 kΩ
RIN+
RIN−
R
O
10 Ω
1 kΩ
I
OUT
R+
+IN C
−IN C
+IN D
ROUT
DYR > 120 dB
for Whole
System!
I
OUT
R−
−IN D
Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas
Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
PowerPADisatrademarkofTexasInstruments.
PRODUCTIONDATAinformationiscurrentasofpublicationdate.
ProductsconformtospecificationsperthetermsoftheTexas
tionprocessingdoesnot
necessarilyincludetestingofallparameters.
Copyright©2004,TexasInstrumentsIncorporated
TPA6120A2
SLOS431–MARCH2004
dsshouldbeshortedtogetherorthedeviceplacedinconductivefoam
duringstorageorhandlingtopreventelectrostaticdamage.
ABSOLUTEMAXIMUMRATINGS
overoperatingfree-airtemperaturerange(unlessotherwisenoted)
Supplyvoltage,V
CC+
toV
CC-
Inputvoltage,V
I
(2)
Differentialinputvoltage,V
ID
Minimumloadimpedance
Continuoustotalpowerdissipation
Operatingfree–airtemperaturerange,T
A
Operatingjunctiontemperaturerange,T
J
(3)
Storagetemperaturerange,T
stg
Leadtemperature1,6mm(1/16inch)fromcasefor10seconds
(1)
(2)
(3)
(1)
TPA6120A2
33V
±V
CC
6V
8Ω
SeeDissipationRatingTable
-40°Cto85°C
-40°Cto150°C
-40°Cto125°C
235°C
Stressesbeyondthoselistedunder“absolutemaximumratings”restressratings
only,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunder“recommendedoperating
conditions”retoabsolute–maximum–ratedconditionsforextendedperiodsmayaffectdevicereliability.
WhentheTPA6120A2ispowereddown,theinputsourcevoltagemustbekeptbelow600-mVpeak.
Ttsasaheatsinkandmustbeconnectedtoa
etodosomayresultinexceedingthemaximumjunctiontemperaturethat
echnicalBriefSLMA002formoreinformationaboututilizingthePowerPADthermally
enhancedpackage.
DISSIPATIONRATINGTABLE
PACKAGE
DWP
(1)
θ
JA
(1)
(°C/W)
44.4
θ
JC
(°C/W)
33.8
T
A
=25°C
POWERRATING
2.8W
TPowerPAD
ThermallyEnhancedPackageapplicationnote(SLMA002)
AVAILABLEOPTIONS
T
A
-40°Cto85°C
(1)
PACKAGE
DWP
(1)
PARTNUMBER
TPA6120A2DWP
SYMBOL
6120A2
ratapedandreeledpart,addthesuffixR
,TPA6120A2DWPR).
RECOMMENDEDOPERATINGCONDITIONS
MIN
Supplyvoltage,V
CC+
andV
CC-
Loadimpedance
Operatingfree–airtemperature,T
A
SplitSupply
SingleSupply
V
CC
=±5Vor±15V
±5
10
16
-4085
MAX
±15
30
UNIT
V
Ω
°C
2