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TDA7404D
July 2003
s
4 STEREO INPUTS
s
1 MONO INPUTS
s
SOFTSTEP-VOLUME
s
BASS, TREBLE AND LOUDNESS CONTROL
s
DIRECT MUTEAND SOFTMUTE
s
INTERNAL BEEP
s
FOUR INDEPENDENT SPEAKER-OUTPUTS
s
SUBWOOFER STEREO OUTPUT
s
DIGITAL CONTROL:
q
I2C-BUS INTERFACE
q
AUDIO-FILTER CHARACTERISTICS
PROGRAMMABLE
DESCRIPTION
The TDA7404D is a high performance signal proces-
sor specificall designed for car radio applications.
The device includes a high performance audiopro-
cessor with fully integrated audio filters. The digital
control allows a programming in a wide range of all
the filter characteristics. By the use of a BICMOS-
process and a linear signal processing low distortion
and low noise are obtained.
SO28
ORDERING NUMBER: TDA7404D
CARRADIO-SIGNAL-PROCESSOR
BLOCK DIAGRAM
SW L
AC
O
U
T
L
AC
O
U
T
R
AC
IN
L
AC
IN
R
In
p
u
tM
u
lt
ip
le
x
e
r
Mono Fader
Digital Control I
2C-Bus
Beep
Supply
Out LF
Out RF
Out LR
Out RR
SW R
SCL
SDA
Vref
Gnd
Vcc
DiffinL
DiffinR
Diffgnd
SE1L
SE1R
SE2L
SE2R
SE3L
SE3R
Mono+
Mono -
G
a
in
/A
uto
Z
e
ro
Lo
udnes
s
Vo
lu
m
e
S
o
ft
M
u
te
T
rebl
e
Ba
s
MIX
M
ix
ing
S
tage
Mono/Beep
Mono Fader
MU
X
Zero Cross
MU
T
E