Texas Instruments TPA3122D2, Instructions Manual

Page: 1 / 21

1
FEATURES APPLICATIONS
DESCRIPTION
1 F
m
SD
Mute Control
PVCCL
TPA3122D2
SIMPLIFIED APPLICATION CIRCUIT
PVCCR
VCLAMP
GAIN1
BYPASS
1 F
m
1 F
m
0.22 F
m
AGND
Left Channel
Right Channel
10 V to 30 V
10 V to 30 V
}
4-Step Gain
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.