PT2811

3W Stereo Class-D Amplifier with

Audio Processor

V1.1

2

January 2014

APPLICATION CIRCUIT

Audio

BT

TV

Tuner

AUX

FB

L3

U1

RSPK

L4

FB

FB

L5

U2

LSPK

L6

FB

1uF

C27

1uF

C26

10uF

C33

FB

L2

FB

L1

C34

100uF

P2

GND

P1

+5V

10uF

C32

Host

MCU

R2

L3

L2

L1

DIFFL-

DIFFR-

DIFFR+

R1

NC

NC

LON

LGND

LVDD

LOP

ROP

RVDD

NC

RON

RGND

13

14

15

16

17

18

19

20

21

22

23

24

48

47

46

45

44

43

42

41

40

39

38

37

R3

NC

PT2811

NC

NC

DIFFL+

BT=Bluetooth module with fully differential output.

The ferrite bead lowpass filter is an optional item; it is useful to reduction the EMI emission.

Lowpass Filter (option)