TDA7400D Datasheet, PDF (1/28 Pages) STMicroelectronics – ADVANCED CAR SIGNAL PROCESSOR

®
TDA7400D
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
BLOCK DIAGRAM
SO28
ORDERING NUMBER: TDA7400D
stereodecoder with multipath detector and a so-
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.
CDL CDGND CDR
7
6
5
10
AM
4
CassR
3
CassL
INPUT
MULTIPLEXER
+
AUTO ZERO
8
Ph-
9
Ph+
MUXR
MUXL
FM_R
FM_L
11
MPX
80KHz
LP
22
V_{DD 1}
V_REF
SUPPLY
21 2
GND CREF
SMUTE
18
ACOUTL ACOUTR
28
27
VOLUME
SOFT
MUTE
TREBLE
BASS
DIGITAL CONTROL
I²C BUS
MONO-FADER
MONO-FADER
MONO-FADER
MONO-FADER
24
OUT LR
26
OUT LF
23
OUT RR
25
OUT RF
19
SCL
20
SDA
16
MUX R
15
MUX L
PILOT
CANCELLATION
DEMODULATOR
+ STEREO ADJUST
+ STEREO BLEND
25KHz
LP
PLL
PIL
DET
MULTIPATH-
DETECTOR
FM NOISE
BLANKER
13
MPIN
14
MPOUT
S&H
HIGH
CUT
PULSE
FORMER
D
A
12
LEVEL
QUAL.
17
QUAL
D99AU1046
October 2003
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