Texas Instruments TPA3124D2 Instructions Manual

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FEATURES
1
• 10-W/Ch Into an 8-Ω Load From a 24-V Supply
234
• 15-W/Ch into a 4-Ω Load from a 22-V Supply
• 30-W/Ch into a 8-Ω Load from a 22-V Supply
• Operates From 10 V to 26 V
• Can Run From +24 V LCD Backlight Supply
• Efficient Class-D Operation Eliminates Need
for Heat Sinks
• Four Selectable, Fixed-Gain Settings
• Internal Oscillator (No External Components
Required)
• Single-Ended Analog Inputs
• Thermal and Short-Circuit Protection With
Auto Recovery
• Space-Saving Surface Mount 24-Pin TSSOP
Package
• Advanced Power-Off Pop Reduction
Left Channel
Right Channel
10 V to 26 V
Shutdown Control
Mute 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.
DLP is a registered trademark of Texas Instruments.
2
System Two, Audio Precision are trademarks of Audio Precision, Inc.
3
All other trademarks are the property of their respective owners.
4
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.
15-W STEREO CLASS-D AUDIO POWER AMPLIFIER
SIMPLIFIED APPLICATION CIRCUIT
1 F
m
LIN
RIN
1 F
m
1 F
m
BYPASS
AGND
AVCC
SD
MUTE
APPLICATIONS
• Flat Panel Televisions
• DLP
®
TVs
• CRT TVs
• Powered Speakers
DESCRIPTION
The TPA3124D2 is a 15-W (per channel), efficient,
class-D audio power amplifier for driving stereo
speakers in a single-ended configuration; or, a mono
speaker in a bridge-tied-load configuration. The
TPA3124D2 can drive stereo speakers as low as 4 Ω.
The efficiency of the TPA3124D2 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.
The patented start-up and shutdown sequences
minimize pop noise in the speakers without additional
circuitry.
TPA3124D2
0.22 F
m
BSR
33 H
ROUT
0.22 F
PGNDR
PGNDL
0.22 F
LOUT
33 H
BSL
0.22 F
m
PVCCL
PVCCR
VCLAMP
1 F
m
GAIN0
GAIN1
TPA3124D2
SLOS578 – MAY 2008
470 F
m
m
m
m
m
470 F
m
10 V to 26 V
4-Step Gain Control
S0267-02
Copyright © 2008, Texas Instruments Incorporated