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TDA7403 Datasheet

  • TDA7403

  • BASIC SIGNAL PROCESSOR

  • 196.37KB

  • 26頁

  • STMICROELECTRONICS   STMICROELECTRONICS

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TDA7403
BASIC SIGNAL PROCESSOR
PRELIMINARY DATA
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
2
C BUS
LOW DISTORTION AND NOISE
SO20
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
SM
ORDERING NUMBER:
TDA7403D
application
The device is fully programmable by I
2
C 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.
11
8
SOFT
MUTE
OUT LR
TREBLE
BASS
OUT LF
OUT RR
OUT RF
17
19
16
18
OUT LR
OUT LF
OUT RR
OUT RF
AM
VOLUME
CASS R
CASS L
1
2
INPUT
MULTIPLEXER
+
AUTO ZERO
12
DIGITAL CONTROL
I C BUS
2
13
SCL
SDA
FM R
FM L
9
MPX
80KHz
LP
PILOT
CANCELLATION
DEMODULATOR
+ STEREO ADJUST
+ STEREO BLEND
25KHz
LP
S&H
HIGH
CUT
CONTROL
15
V
S
SUPPLY
PLL
PIL
DET
D
NOISE
BLANKER
PULSE
FORMER
A
10
LEVEL
D98AU918
14
GND
20
CREF
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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