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TPA3131D2 Datasheet(PDF) 11 Page - Texas Instruments

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Part # TPA3131D2
Description  25-W Filter-Free Class-D Stereo Amplifier
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPA3131D2 Datasheet(HTML) 11 Page - Texas Instruments

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SDZ
MUTE
TTL
Buffer
Gain
Control
GAIN
OUTPR FB
RINN
RINP
Gain
Control
OUTPNR FB
FAULTZ
SYNC
GAIN/SLV
AM<2:0>
PLIMIT
AVCC
GVDD
LDO
Regulator
LINP
LINN
GND
Input
Sense
PBTL
Select
OUTPL_FB
Gain
Control
OUTNL_FB
AVDD
GVDD
PLIMIT
Reference
Ramp
Generator
Biases and
References
Startup Protection
Logic
SC Detect
DC Detect
Thermal
Detect
UVLO/OVLO
PVCC
GVDD
PVCC
Gate
Drive
OUTNL_
FB
PVCC
GVDD
PVCC
Gate
Drive
PWM
Logic
PBTL Select
OUTPL_FB
GND
OUTPL
BSPL
GND
OUTNL
BSNL
GND
BSNR
OUTPR
GND
OUTNR
OUTNR_
FB
BSPR
OUTPR_FB
PVCC
GVDD
PVCC
Gate
Drive
PVCC
GVDD
PVCC
Gate
Drive
PWM
Logic
PBTL Select
PLIMIT
PLIMIT
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Thermal
Pad
TPA3131D2, TPA3132D2
www.ti.com
SLOS841B – SEPTEMBER 2013 – REVISED JANUARY 2015
7 Detailed Description
7.1 Overview
The TPA3132D2 device is a high-efficiency stereo Class-D audio power amplifier optimized for high-transient
power capability to utilize the dynamic power headroom of small loudspeakers. It’s capable of delivering high
peak power into a 4-
Ω speaker.
The device can be configured for either master or slave operation by using the SYNC pin. This helps to prevent
audible beats noise.
7.2 Functional Block Diagram
7.3 Feature Description
7.3.1 Gain Setting and Master and Slave
The gain of the TPA3131D2 is set by the voltage divider connected to the GAIN/SLV control pin. Master or Slave
mode is also controlled by the same pin. An internal ADC is used to detect the 8 input states. The first four
stages sets the GAIN in Master mode in gains of 20, 26, 32, 36 dB respectively, while the next four stages sets
the GAIN in Slave mode in gains of 20, 26, 32, 36 dB respectively. The gain setting is latched during power-up
and cannot be changed while device is powered. shows the recommended resistor values and the state and
gain:
Copyright © 2013–2015, Texas Instruments Incorporated
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Product Folder Links: TPA3131D2 TPA3132D2


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