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ST Microelectronics - BASIC SIGNAL PROCESSOR

Numéro de référence TDA7403D
Description BASIC SIGNAL PROCESSOR
Fabricant ST Microelectronics 
Logo ST Microelectronics 





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TDA7403D fiche technique
® TDA7403
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 I2C BUS
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
BLOCK DIAGRAM
BASIC SIGNAL PROCESSOR
PRELIMINARY DATA
SO20
ORDERING NUMBER: TDA7403D
application
The device is fully programmable by I2C bus in-
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.
8
AM
CASS R
CASS L
1
2
INPUT
MULTIPLEXER
+
AUTO ZERO
VOLUME
SM
11
SOFT
MUTE
TREBLE
BASS
DIGITAL CONTROL
OUT LR
OUT LF
OUT RR
OUT RF
17
19
16
18
OUT LR
OUT LF
OUT RR
OUT RF
I2C BUS
12
SCL
13
SDA
9
MPX
80KHz
LP
FM R
FM L
PILOT
CANCELLATION
DEMODULATOR
+ STEREO ADJUST
+ STEREO BLEND
25KHz
LP
S&H
HIGH
CUT
CONTROL
15
VS
SUPPLY
PLL
PIL
DET
14 20
GND CREF
NOISE
BLANKER
PULSE
FORMER
D
A
10
LEVEL
D98AU918
October 1998
1/26
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

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