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TDA7404D

CARRADIO-SIGNAL-PROCESSOR

s

s

s

s

s

s

s

s

s

4 STEREO INPUTS

1 MONO INPUTS

SOFTSTEP-VOLUME

BASS, TREBLE AND LOUDNESS CONTROL

DIRECT MUTE AND SOFTMUTE

INTERNAL BEEP

FOUR INDEPENDENT SPEAKER-OUTPUTS

SUBWOOFER STEREO OUTPUT

DIGITAL CONTROL:

2

q

I C-BUS INTERFACE

q

AUDIO-FILTER CHARACTERISTICS

PROGRAMMABLE

cessor with fully integrated audio filters. The digital

control allows a programming in a wide range of all

the filter characteristics. By the use of a BICMOS-

process and a linear signal processing low distortion

and low noise are obtained.

SO28

ORDERING NUMBER:

TDA7404D

DESCRIPTION

The TDA7404D is a high performance signal proces-

sor specificall designed for car radio applications.

The device includes a high performance audiopro-

BLOCK DIAGRAM

ACOUTR

ACOUTL

MIX

DiffinL

Gain/Auto Zero

Mixing Stage

Loudness

Soft Mute

Diffgnd

DiffinR

SE1L

SE1R

Input Multiplexer

SE2L

SE2R

SE3L

SE3R

Mono+

Mono -

Beep

Digital Control I

2

C-Bus

Mono Fader

Mono Fader

Volume

Treble

Bass

Mono Fader

Mono Fader

Out LF

Out RF

Out LR

Out RR

ACINR

ACINL

MUTE

MUX

Mono Fader

Mono Fader

Zero Cross

Mono/Beep

SW L

SW R

SCL

SDA

Supply

Gnd Vref Vcc

July 2003

1/26

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