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廬

TDA7462

DUAL AUDIOPROCESSOR WITH COMPANDER

AND SUBWOOFER OUTPUT

FULLY INTEGRATED AUDIOPROCESSOR

5 STEREO + 1 MONO INPUTS

FOUR INDEPENDENT SPEAKER OUTPUTS

DYNAMIC COMPRESSION STAGE FOR CD

SUBWOOFER OUTPUT

SOFTSTEP FEATURE FOR VOLUME

VOICE-BAND FILTER

DIRECT MUTE AND SOFTMUTE

PAUSE DETECTOR

FULLY PROGRAMMABLE BY I

2

C BUS IN-

TERFACE

DESCRIPTION

The TDA7462 is a high performance audioproc-

essor with fully integrated audio filters. The digi-

tal control allows the programming of all filter

characteristics in a wide range without the need

of external components. New innovative features

are included , a dynamic compression stage to

BLOCK DIAGRAM

SO28

ORDERING NUMBER:

TDA7462D

optimize audio response of CD sources an addi-

tional output channel for subwoofer and a sepa-

rate source selector for rear channel. The use of

a dedicated BICMOS process makes signal proc-

essing very linear thus achieving low distortion

and low noise figures.

CD R+ CD L- CD L+

8

7

9

10

11

1

2

13

12

3

4

28

27

REAR

SELECTOR

INPUT

MULTIPLEXER

+ MIXING-STAGE

IN-GAIN

FRONT

SELECTOR

COMPANDER

6

5

IN-GAIN +

AUTO ZERO

MUTE

26

SOFT

MUTE

VOICE-BANDPASS

TREBLE

BASS

HP

LP

FRONT

FADER

FRONT

FADER

REAR

FADER

REAR

FADER

22

CD R-

PDR

PDGND

PDL

SE1L

SE1R

SE2R

SE2L

MD+

MD-

SEM/SE3L

SE3R

LOUDNESS

VOLUME

OUT LF

21

OUT RF

19

OUT RR

LOUDNESS

20

OUT RL

18

SUBWOOFER

LP

MONO

FADER

SUBWOOFER

OUT

17

SUBOUT+

SUBOUT-

PAUSE

23

25

PAUSE

DETECT.

BEEP

DIGITAL CONTROL

I

2

C BUS

24

SDA

SCL

SUPPLY

16

V

S

15

GND

14

CREF

D96AU864

November 2001

1/25

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