Power Pad

24

23

22

21

20

19

18

17

1

2

3

4

5

6

7

8

GAIN/SLV

GVDD

INPL

INNL

MUTE

GND

PLIMIT

AM2

BSNR

OUTNR

BSNL

GND

OUTNL

GND

GND

GND

TPA3131D2

TPA3132D2

SLOS841 – JULY 2013

www.ti.com

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

CONNECTION DIAGRAM

QFN PACKAGE

32-PIN

(TOP VIEW)

TERMINAL FUNCTIONS

PIN

DESCRIPTION

NO.

NAME

1

PLIMIT

I

Power limit level adjust. Connect a resistor divider from GVDD to GND to set power limit. Connect directly

to GVDD for no power limit.

2

GVDD

PO

Internally generated gate voltage supply. Not to be used as a supply or connected to any component other

than a 1uF X7R ceramic decoupling capacitor.

3

GAIN/SLV

I

Sets Gain and selects between Master and Slave mode depending on pin voltage divider.

4

GND

G

Ground

5

INNL

I

Negative audio input for left channel. Biased at 3V.

6

INPL

I

Positive audio input for left channel. Biased at 3V.

7

MUTE

I

Mute signal for fast disable/enable of outputs: HIGH = outputs OFF (high-Z), LOW = outputs ON. TTL logic

levels with compliance to AVCC.

8

AM2

I

AM Avoidance Frequency Selection

9

AM1

I

AM Avoidance Frequency Selection

10

AM0

I

AM Avoidance Frequency Selection

11

SYNC

DIO

Clock input/output for synchronizing multiple class-D devices. Direction determined by GAIN/SLV pin. Input

signal not to exceed GVDD (7V)

12

AVCC

P

Analog Supply

13

PVCC

P

Power supply

14

PVCC

P

Power supply

15

BSPL

BST

Boot strap for positive left channel output, connect to 220nF X7R ceramic cap to OUTPL

16

OUTPL

PO

Positive left channel output

17

GND

G

Ground

18

OUTNL

PO

Negative left channel output

(1)

TYPE: DO = Digital Output, I = Analog Input, G = General Ground, PO = Power Output, BST = Boot Strap.

2

Submit Documentation Feedback

Copyright © 2013, Texas Instruments Incorporated

Product Folder Links: TPA3131D2 TPA3132D2