1

FEATURES

APPLICATIONS

DESCRIPTION

1 F

m

SD

MuteControl

PVCCL

TPA3122D2

SIMPLIFIED APPLICATIONCIRCUIT

PVCCR

VCLAMP

GAIN1

BYPASS

1 F

m

1 F

m

0.22 F

m

AGND

LeftChannel

RightChannel

10Vto30V

10Vto30V

Control

Shutdown

Control

LIN

RIN

BSR

BSL

PGNDR

PGNDL

0.22 F

m

22 H

m

22 H

m

0.68 F

m

470 F

m

0.68 F

m

1 F

m

470 F

m

GAIN0

AVCC

MUTE

ROUT

LOUT

TPA3122D2

SLOS527A – DECEMBER 2007 – REVISED DECEMBER 2007

www.ti.com

15-W STEREO CLASS-D AUDIO POWER AMPLIFIER

• Televisions

• 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

The TPA3122D2 is a 15-W (per channel) efficient,

• Efficient Class-D Operation

Class-D audio power amplifier for driving stereo

• Four Selectable, Fixed Gain Settings

single ended speakers or mono bridge tied load. The

• Internal Oscillator (No External Components

TPA3122D2 can drive stereo speakers as low as 4

Ω.

Required)

The efficiency of the TPA3122D2 eliminates the need

for an external heat sink when playing music.

• Single Ended Analog Inputs

The gain of the amplifier is controlled by two gain

• Thermal and Short-Circuit Protection with

select pins. The gain selections are 20, 26, 32, and

Auto Recovery Feature

36 dB.

• 20-pin DIP Package

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.

Copyright © 2007, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.