PT2811

3W Stereo Class-D Amplifier with

Audio Processor

V1.1

4

January 2014

PIN DESCRIPTION

Pin Name

I/O

Description

Pin No.

RINN

I

Negative input of right channel Class-D amp

1

RINP

I

Positive input of right channel Class-D amp

2

NC

-

No connection

3

VDD1

P

Power input for internal circuits

4

VDD2

P

Power input for internal circuits

5

SD

I

Shutdown control pin. Sets to

“logic-low” will turn off whole chip and pull up to

“logic-high” to back to normal operation.

6

SDA

I

I

7

SCL

I

I

8

ROUT

O

Right channel line out

9

RB1

I

Capacitor 1 for right channel Bass controller

10

RB2

O

Capacitor 2 for right channel Bass controller

11

RT

I

Capacitor for right channel Treble controller

12

NC

-

No connection

13

R3

I

Input 3 of right channel

14

R2

I

Input 2 of right channel

15

R1

I

Input 1 of right channel

16

DIFFR+

I

Differential right channel

“+” input

17

DIFFR-

I

Differential right channel

“-” input

18

DIFFL-

I

Differential left channel

“-“ input

19

DIFFL+

I

Differential left channel

“+” input

20

L1

I

Input 1 of left channel

21

L2

I

Input 2 of left channel

22

L3

I

Input 3 of left channel

23

NC

-

No connection

24

LT

I

Capacitor for left channel Treble controller

25

LB2

O

Capacitor 2 for left channel Bass controller

26

LB1

I

Capacitor 1 for left channel Bass controller

27

LOUT

O

Left channel line out

28

BYPASS

P

Bypass cap for Internal Voltage Reference, a 2.2µF cap is recommended.

29

OE

I

Output Enable setting, connect a 0.22

F cap to GND.

30

GND2

P

Ground

31

GND1

P

Ground

32

NC

-

No connection

33

LINP

I

Positive input of left channel Class-D amp

34

LINN

I

Negative input of left channel Class-D amp

35

NC

-

No connection

36

NC

-

No connection

37

LON

O

Negative output of left channel Class-D amp

38

NC

-

No connection

39

LGND

P

Power ground of left channel Class-D amp

40

LVDD

P

Power input of left channel Class-D amp

41

LOP

O

Positive output of left channel Class-D amp

42

ROP

O

Positive output of right channel Class-D amp

43

RVDD

P

Power input of right channel Class-D amp

44

RGND

P

Power ground of right channel Class-D amp

45

NC

-

No connection

46

RON

O

Negative output of right channel Class-D amp

47

NC

-

No connection

48