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TDA7400
ADVANCED CAR SIGNAL PROCESSOR
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TDA7400
ADVANCED CAR SIGNAL PROCESSOR
n FULLY INTEGRATED SIGNAL PROCESSOR
OPTIMIZED FOR CAR RADIO APPLICA-
FULLY PROGRAMMABLE BY Pc BUS
'' INCLUDES AUDIOPROCESSOR, STEREO -
DECODER WITH NOISE BLANKER AND
MULTIPATH DETECTOR
n SOFTMUTE FUNCTION
n PROGRAMMABLE ROLL-OFF COMPENSA-
a NO EXTERNAL COMPONENTS
DESCRIPTION
The TDA7400 is the newcomer of the CSP family
introduced by TDA7460/61. It uses the same in-
novative concepts and design technologies allo -
ing fully software programmability through IC
bus and overall cost optimisation for the system
designer.
The device includes an audioprocessor with con-
tigurable inputs and absence of external compo-
BLOCK DIAGRAM
2ttt,s:,ssiii_,
TQFP44
ORDERING NUMBER: TDA7400
nents for filter settings, a last generation
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 SMUTE
CDROUT
VOLUME
CDLOUT
AM MULTIPLEXER
TAPE R
TAPE L
AUTO ZERO
PH+ MUXL
PH- FMLL
DEMODULATOR
' STEREO ADJUST
' STEREO BLEND
CANCELLATION
MPX 80KHz N
V SUPPLY MULTIPATH-
REF DETECTOR
26 42 15
GND CREF MPIN
TREBLE
ACOUTL
ACOUTR
ACINRF
ACINRR
ACINLF
ACINLR
OUT LR
OUT LF
OUT RR
OUT RF
DIGITAL CONTROL
25KHz \ CUT
LP CONTROL
FORMER
BLANKER
D96AU852B
July 2000
TDA7400
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
Vs Operating Supply Voltage 10.5 V
Tamb Operating Ambient Temperature Range -40 to 85 "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) 50 60 dB
Stereodecoder + Audioprocessor 45 55 dB
All pins are protected against ESD according to the MIL883 standard.
PIN CONNECTION
o: -l I I II o: r--' E
E E [h h: 2 li li rsl o' 8 8
< < 0: m o o O O . O O
_ - o > < < < < a < <
fl l-l l-l r-I fl l-l i-l t-l l-l l-l fl
/4443 42 41 40 39 38 37 36 35 34\
CDRE 1 C) 33 [l N.C.
CDROUT E 2 32 [l OUT LF
CDG E 3 31 [l OUT RF
CDLOUT L 4 30 [l OUT LR
CDL L 5 29 1 OUT RR
N.C. L 6 28 [l N.C.
PHONE- L 7 27 [l vs
PHONE+ L 8 26 J GND
N.C. E 9 25 [l NC.
AM L 10 24 [l SDA
N.C. L 11 23 J SCL
\1213141516171819 20 2122/
|_l |_l l-) |_l t_) ' L] LJ ' i-l L]
X o -l Z - O -l D: Q -l U.) 098AU55J
0. Lu I D . X x . < -
'aiii'ii'iaeliia8ii'
THERMAL DATA
Symbol Parameter Value Unit
Rth-j pins Thermal Resistance Junction-pins Max 85 °CNV
