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ST Microelectronics - ADVANCED CAR SIGNAL PROCESSOR

Numéro de référence TDA7400
Description ADVANCED CAR SIGNAL PROCESSOR
Fabricant ST Microelectronics 
Logo ST Microelectronics 





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TDA7400 fiche technique
® TDA7400
ADVANCED CAR SIGNAL PROCESSOR
FULLY INTEGRATED SIGNAL PROCESSOR
OPTIMIZED FOR CAR RADIO APPLICA-
TIONS
FULLY PROGRAMMABLE BY I2C BUS
INCLUDES AUDIOPROCESSOR, STEREO -
DECODER WITH NOISE BLANKER AND
MULTIPATH DETECTOR
PROGRAMMABLE ROLL-OFF COMPENSA-
TION
NO EXTERNAL COMPONENTS
DESCRIPTION
The TDA7400D is the newcomer of the CSP fam-
ily introduced by TDA7460/61. It uses the same
innovative concepts and design technologies al-
lowing fully software programmability through I2C
bus and overall cost optimisation for the system
designer.
The device includes an audioprocessor with con-
figurable inputs and absence of external compo-
nents for filter settings, a last generation
stereodecoder with multipath detector and a so-
BLOCK DIAGRAM
TQFP44
ORDERING NUMBER: TDA7400
phisticated stereoblend and noise cancellation
circuitry.
Strength points of the CSP approach are flexibility
and overall cost/room saving in the application,
combined with high performances.
AUDIO PROCESSOR PART
CDL CDGND CDR
531
2
CDROUT
4
CDLOUT
10 INPUT
AM MULTIPLEXER
TAPE R
TAPE L
PH+
44
43
8
+
AUTO ZERO
MUXR
MUXL
7
PH-
FM_R
FM_L
12
MPX
80KHz
LP
VS
VREF
27
41
SUPPLY
26 42
GND CREF
SMUTE
22
VOLUME
SOFT
MUTE
34 35
TREBLE
BASS
DIGITAL CONTROL
39 38 40 37
OUT LR
OUT LF
OUT RR
OUT RF
30
OUT LR
32
OUT LF
29
OUT RR
31
OUT RF
I2C BUS
23
SCL
24
SDA
19
MUX R
18
MUX L
PILOT
CANCELLATION
DEMODULATOR
+ STEREO ADJUST
+ STEREO BLEND
25KHz
LP
PLL
PIL
DET
MULTIPATH-
DETECTOR
15
MPIN
16
MPOUT
NOISE
BLANKER
S &H
PULSE
FORMER
HIGH
CUT
CONTROL
D
A
14
LEVEL
QUAL.
21
QUAL
D98AU852B
July 1999
1/28

PagesPages 28
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