PT7313E

Stereo Audio Processor for Car Audio

Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan

DESCRIPTION

The PT7313E is an audio processor designed for

versatile application, including 3 stereo input selectors

with adjustable gain, master volume control with low

frequency loudness compensation, individual output

attenuator and tone control. It is a good solution for

the car audio signal processing.

Due to the high reliability requirement from the car

audio business, the PT7313E improves both audio

performance and input surge current capability that

make PT7313E the best

solution for the cost-effective

car audio systems.

APPLICATIONS

• Car Audio

• Home Audio System

• Powered Speaker System

FEATURES

• 3 stereo inputs with gain selection, range from 0dB

to +11.25dB in 3.75dB/step

• Master volume from 0 dB to -78.75dB in

1.25dB/step

• Speaker attenuator for balance and fader, range

from 0dB to -38.75dB in 1.25dB/step

• Each channel output can be muted individually.

• Low frequency loudness compensation

• Bass and Treble control, range from -14dB to

+14dB in 2dB/step

• Wide operation range (VDD = 4V to 10V)

APPLICATION CIRCUIT

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

REF

VDD

AGND

TREB_L

TREB_R

RIN

ROUT

LOUD_R

RIN3

RIN2

RIN1

LOUD_L

LIN3

LIN2

LIN1

LIN

LOUT

BOUT_L

BIN_L

BIN_R

BOUT_R

RROUT

LROUT

RFOUT

LFOUT

DGND

SDA

SCL

2.2uF

2.2uF

22uF

VDD

2.7n

2.7n

100n

100n

100n

100n

100n

100n

5.6K

5.6K

Front Left

Front Right

Rear Left

Rear Right

10uF

10uF

10uF

10uF

Power

A mplifier

2.2uF

2.2uF

2.2uF

2.2uF

2.2uF

2.2uF

AUDIO 1

AUDIO 2

AUDIO 3

2.2K

2.2K

2.2K

2.2K

2.2K

2.2K

L

L

L

R

R

R

Input Surge

Protection

MCU

PT2313E

PT7313E