TDA7403_02 Datasheet, PDF (1/25 Pages) STMicroelectronics – BASIC SIGNAL PROCESSOR

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TDA7403
BASIC SIGNAL PROCESSOR
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
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
1
CASS R
2
CASS L
INPUT
MULTIPLEXER
+
AUTO ZERO
VOLUME
SM
11
SOFT
MUTE
TREBLE
BASS
DIGITAL CONTROL
17
OUT LR
19
OUT LF
16
OUT RR
18
OUT RF
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
V_S
SUPPLY
PLL
PIL
DET
14 20
GND CREF
November 2002
NOISE
BLANKER
PULSE
FORMER
D
A
10
LEVEL
D98AU918
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