Exposed Thermal 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

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SLOS841B – SEPTEMBER 2013 – REVISED JANUARY 2015

5 Pin Configuration and Functions

RHB Packaged

32-Pin VQFN With Exposed Thermal Pad

Top View

Pin Functions

PIN

DESCRIPTION

NO.

NAME

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

1

PLIMIT

I

to GVDD for no power limit.

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

2

GVDD

PO

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.

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

7

MUTE

I

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

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

11

SYNC

DIO

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

19

BSNL

BST

Boot strap for negative left channel output, connect to 220nF X7R ceramic cap to OUTNL

20

GND

G

Ground

21

GND

G

Ground

22

BSNR

BST

Boot strap for negative right channel output, connect to 220nF X7R ceramic cap to OUTNR

(1)

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

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