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TPA3121D2 Datasheet(PDF) 1 Page - Texas Instruments

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No. de pieza TPA3121D2
Descripción Electrónicos  15-W STEREO CLASS-D AUDIO POWER AMPLIFIER
Download  27 Pages
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Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI - Texas Instruments

TPA3121D2 Datasheet(HTML) 1 Page - Texas Instruments

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1
FEATURES
APPLICATIONS
DESCRIPTION
1 F
m
SD
MuteControl
PVCCL
TPA3121D2
SIMPLIFIED APPLICATIONCIRCUIT
PVCCR
VCLAMP
GAIN1
BYPASS
1 F
m
1 F
m
0.22 F
m
AGND
LeftChannel
RightChannel
10Vto26V
10Vto26V
4-StepGainControl
ShutdownControl
LIN
RIN
BSR
BSL
PGNDR
PGNDL
0.22 F
m
33 H
m
33 H
m
0.22 F
m
470 F
m
0.22 F
m
1 F
m
470 F
m
GAIN0
AVCC
MUTE
ROUT
LOUT
S0267-01
TPA3121D2
www.ti.com........................................................................................................................................................................................................ SLOS537 – MAY 2008
15-W STEREO CLASS-D AUDIO POWER AMPLIFIER
• Flat Panel Display TVs
23
• 10-W/Ch Stereo Into an 8-Ω Load From a 24-V
Supply
• DLP® TVs
• CRT TVs
• 15-W/Ch Stereo Into a 4-Ω Load from a 22-V
Supply
• Powered Speakers
• 30-W/Ch Mono Into an 8-Ω Load from a 22-V
Supply
• Operates From 10 V to 26 V
The TPA3121D2 is a 15-W (per channel), efficient,
class-D audio power amplifier for driving stereo
• Can Run From +24 V LCD Backlight Supply
speakers in a single-ended configuration or a mono
• Efficient Class-D Operation Eliminates Need
speaker in a bridge-tied-load configuration. The
for Heat Sinks
TPA3121D2 can drive stereo speakers as low as 4
Ω.
• Four Selectable, Fixed-Gain Settings
The efficiency of the TPA3121D2 eliminates the need
for an external heat sink when playing music.
• Internal Oscillator to Set Class D Frequency
(No External Components Required)
The gain of the amplifier is controlled by two gain
select pins. The gain selections are 20, 26, 32, and
• Single-Ended Analog Inputs
36 dB.
• Thermal and Short-Circuit Protection With
Auto Recovery
The patented start-up and shutdown sequences
minimize pop noise in the speakers without additional
• Space-Saving Surface Mount 24-Pin TSSOP
circuitry.
Package
• Advanced Power-Off Pop Reduction
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.
2
DLP is a registered trademark of Texas Instruments.
3
System Two, Audio Precision are trademarks of Audio Precision, Inc.
PRODUCTION DATA information is current as of publication date.
Copyright © 2008, 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.


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