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TDA7403D
BASIC SIGNAL PROCESSOR
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TDA7403
BASIC SIGNAL PROCESSOR
n DEVICE INCLUDES AUDIO PROCESSOR,
STEREO DECODER AND NOISEBLANKER
n HIGH PERFORMANCE SIGNAL PROCES-
SOR WITH BASIC FUNCTIONS
AM, FM, (MPX) AND CASSETTE INPUTS
NO EXTERNAL COMPONENTS REQUIRED
FULLY PROGRAMMABLE VIA IZC 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
ORDERING NUMBER: TDA7403D
application
The device is fully programmable by l2C 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.
AM VOLUME
CASS R
CASS L MULTIPLEXER
AUTO ZERO
N PILOT
MPX SOKHZ
CANCELLATION
Vs SUPPLY
GND CREF
DEMODULATOR
+ STEREO ADJUST
LP + STEREO BLEND
OUT LR
OUT LF
OUT RR
OUT RF
TREBLE
DIGITAL CONTROL
CONTROL
FORMER
LEVEL D98AU918
November 2002
TDA7403
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
Vs Operating Supply Voltage 10.5 V
Tamb Operating Ambient Temperature Range -40 to 80 "C
Tstg Operating Storage Temperature Range -55 to 150 ''C
SUPPLY
Symbol Parameter Test Condition Min. Typ. Max. Unit
Vs Supply Voltage 7.5 9 10 V
Is Supply Current Vs = 9V 25 30 35 mA
SVRR Ripple Rejection @ 1KHz Audioprocessor (all filters flat) 60 dB
Stereodecoder + Audioprocessor 55 dB
All pins are protected against ESD according to the MIL883 standard.
PIN CONNECTION
CASS R 1 CREF
CASS L 2 OUT LF
N.C. 3 OUT RF
N.C. 4 OUT LR
NC. 5 OUT RR
N.C. 6 VS
N.C. 7 GND
AM 8 SDA
MPX 9 SCL
LEVEL 1 SM
098AU919
THERMAL DATA
Symbol Parameter Value Unit
ij pins Thermal Resistance Junction-pins Max 85 "C/l/V
2/25 gr,
