TPA3120D2 Datasheet, PDF (1/23 Pages) Texas Instruments – 25-W STEREO CLASS-D AUDIO POWER AMPLIFIER

TPA3120D2
www.ti.com
25-W STEREO CLASS-D AUDIO POWER AMPLIFIER
SLOS507 – MARCH 2007
FEATURES
• 25-W/ch into a 4-Ω Load from a 27-V Supply
• 20-W/ch into a 4-Ω Load from a 24-V Supply
• Operates from 10 V to 30 V
• 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
APPLICATIONS
TPA3120D2
• Televisions
DESCRIPTION
The TPA3120D2 is a 25-W (per channel) efficient,
Class-D audio power amplifier for driving stereo
speakers in a single-ended configuration or a mono
bridge-tied speaker. The TPA3120D2 can drive
stereo speakers as low as 4 Ω. The efficiency of the
TPA3120D2 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,
36 dB.
The patented start-up and shut-down sequences
minimize "pop" noise in the speakers without
additional circuitry.
Left Channel
Right Channel
SIMPLIFIED APPLICATION CIRCUIT
1 mF
1 mF
1 mF
TPA3120D2
0.22 mF
LIN
BSR
22 mH 470 mF
RIN
ROUT
PGNDR
1 mF
PGNDL
1 mF
BYPASS
AGND
LOUT
BSL
22 mH
0.22 mF
470 mF
10 V to 30 V
Shutdown
Control
Mute Control
AVCC
SD
MUTE
PVCCL
PVCCR
VCLAMP
1 mF
GAIN0
GAIN1
10 V to 30 V
} 4-Step Gain
Control
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCT PREVIEW information concerns products in the
formative or design phase of development. Characteristic data and
other specifications are design goals. Texas Instruments reserves
the right to change or discontinue these products without notice.
Copyright © 2007, Texas Instruments Incorporated