TPA3122D2_15 Datasheet, PDF (1/21 Pages) Texas Instruments – 15-W STEREO CLASS-D AUDIO POWER AMPLIFIER

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TPA3122D2
SLOS527A – DECEMBER 2007 – REVISED DECEMBER 2007
15-W STEREO CLASS-D AUDIO POWER AMPLIFIER
FEATURES
1
• 10-W/ch into an 4-Ω Load From a 17-V Supply
• 15-W/ch into an 8-Ω Load From a 28-V Supply
• Operates from 10 V to 30 V
• Efficient Class-D Operation
• Four Selectable, Fixed Gain Settings
• Internal Oscillator (No External Components
Required)
• Single Ended Analog Inputs
• Thermal and Short-Circuit Protection with
Auto Recovery Feature
• 20-pin DIP Package
APPLICATIONS
• Televisions
DESCRIPTION
The TPA3122D2 is a 15-W (per channel) efficient,
Class-D audio power amplifier for driving stereo
single ended speakers or mono bridge tied load. The
TPA3122D2 can drive stereo speakers as low as 4Ω.
The efficiency of the TPA3122D2 eliminates the need
for an external heat sink when playing music.
The gain of the amplifier is controlled by two gain
select pins. The gain selections are 20, 26, 32, and
36 dB.
SIMPLIFIED APPLICATION CIRCUIT
Left Channel
Right Channel
1 mF
1 mF
TPA3122D2
0.22 mF
LIN
BSR
22 mH 470 mF
RIN
ROUT
PGNDR
0.68 mF
1 mF
BYPASS
AGND
PGNDL
LOUT
BSL
0.68 mF
22 mH
0.22 mF
470 mF
10 V to 30 V
AVCC
PVCCL
PVCCR
10 V to 30 V
Shutdown
Control
Mute Control
SD
MUTE
VCLAMP
1 mF
GAIN0
GAIN1
} 4-Step Gain
Control
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2007, Texas Instruments Incorporated