DEVICE INCLUDES AUDIO PROCESSOR,

STEREO DECODER AND NOISEBLANKER

HIGH PERFORMANCE SIGNAL PROCES-

SOR WITH BASIC FUNCTIONS

AM, FM, MPX AND CASSETTE INPUTS

NO EXTERNAL COMPONENTS REQUIRED

FULLY PROGRAMMABLE VIA I

LOW DISTORTION AND NOISE

DESCRIPTION

The TDA7403 is a high performance signal proc-

essor specifically designed for car radio applica-

tions focused on the low-end market.

The device includes a complete audioprocessor

and a stereo decoder with noiseblanker.

Switched-capacitors design technique allows to

obtain all these features without external compo-

nents or adjustments. Using TDA7403 results is

in a very performant low-cost signal processing

application

The device is fully programmable by I

terface allowing to customize key device parame-

ters and especially filter characteristics.

The BICMOS process combined with the opti-

mized signal processing assure low noise and

low distortion performances.

This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

October 1998

®

SUPPLY

DEMODULATOR

+ STEREO ADJUST

+ STEREO BLEND

CREF

OUT LR

D98AU918

DIGITAL CONTROL

PILOT

CANCELLATION

CASS L

INPUT

MULTIPLEXER

+

AUTO ZERO

MPX

VOLUME

BASS

TREBLE

OUT LR

OUT LF

OUT RR

OUT RF

OUT LF

OUT RR

OUT RF

SCL

SDA

80KHz

LP

FM R

FM L

PLL

25KHz

LP

S& H

HIGH

CUT

CONTROL

PULSE

FORMER

D

LEVEL

AM

CASS R

GND

SM

SOFT

MUTE

PIL

DET

I

NOISE

BLANKER

A

8

1

2

9

15

14

20

11

17

19

16

18

12

13

10

BLOCK DIAGRAM

SO20

ORDERING NUMBER: TDA7403D

TDA7403

BASIC SIGNAL PROCESSOR

PRELIMINARY DATA

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