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TDA7409

CARRADIO-SIGNAL-PROCESSOR

s

s

s

s

s

s

s

4 STEREO INPUTSSOFTSTEP-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

SO20

ORDERING NUMBER:

TDA7409D

DESCRIPTION

The TDA7409 is a high performance signal proces-

sor specificall designed for car radio applications.

The device includes a high performance audiopro-

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-

BLOCK DIAGRAM

process and a linear signal processing low distortion

and low noise are obtained.

MUTE

SE1L

SE1R

SE2L

SE2R

SE3L

SE3R

SE4L

SE4L

INPUT

MULTIPLEXER

MONO/

BEEP

GAIN/

AUTO

ZERO

MIXING

STAGE

LOUDNESS

VOLUME

SOFT

MUTE

TREBLE

BASS

MONO

FADER

MONO

FADER

MONO

FADER

MONO

FADER

MONO

FADER

MONO

FADER

ZERO

CROSS

OUTLF

OUTRF

OUTLR

OUTRR

SWL

SWR

BEEP

GND

V

REF

V

S

SUPPLY

DIGITAL CONTROL I

2

C-BUS

SCL

SDA

D00AU1178

September 2003

1/25

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