TDA7442 Datasheet, PDF (2/17 Pages) STMicroelectronics – TONE CONTROL AND SURROUND DIGITALLY CONTROLLED AUDIO PROCESSOR

TDA7442 - TDA7442D
Figure 3. Block Diagram (TDA7442)
2.2µF
100nF
5.6nF
5.6K
100nF
100nF
0.47µF
5
L-IN1
0.47µF
50K
6
L-IN2
0.47µF
50K
7
L-IN3
0.47µF
50K
8
L-IN4
50K
MONITOR(L) MUXOUT(L)
3
31.5dB
9
control
-
+
+
0.47µF
R-IN1
0.47µF
R-IN2
0.47µF
R-IN3
0.47µF
R-IN4
2
50K
1
50K
32
50K
31
50K
31.5dB
control
PS1
10
19
RPS1
30K
PS1
90Hz
SYMULATED
L+R
- L-R
+
MUSIC
TREBLE-L
20
OFF
MUSIC/
SYMULATED
SURR
OFF
MIXING
AMP
TREBLE
LPF
9KHz
EFFECT
CONTROL
MIXING
AMP
TREBLE
SURR
30K
OFF
Vref
SUPPLY
BIN(L) BOUT(L)
16
17
RB
FIX
BASS
VAR
-
+
FIX
I2C BUS DECODER + LATCHES
BASS
FIX
VAR
+
-
RB
4
11 13
MONITOR(R) MUXOUT(R)
18 27
28 26
LP
VS
CREF
22
TREBLE-R
14
BIN(R)
13
BOUT(R)
2.2µF
1.2nF
22µF
5.6nF
100nF
5.6K
100nF
79dB CONTROL
SPKR
ATT ₃₀
MUTE
LOUT
24
SCL
25
SDA
23
DIG GND
SPKR
ATT ₂₉
ROUT
MUTE
79dB CONTROL
D98AU947B
Figure 4. Block Diagram (TDA7442D)
0.47µF
4
L-IN1
0.47µF
50K
5
L-IN2
0.47µF
50K
6
L-IN3
0.47µF
50K
7
L-IN4
50K
0.47µF
R-IN1
0.47µF
R-IN2
0.47µF
R-IN3
0.47µF
R-IN4
3
50K
2
50K
1
50K
28
50K
2.2µF
MUXOUT(L)
31.5dB
control
8
9
30K
100nF
PS1
17
RPS1
PS1
90Hz
-
+
+
SYMULATED
L+R
- L-R
+
MUSIC
5.6nF
TREBLE-L
18
5.6K
100nF
100nF
BIN(L) BOUT(L)
14
15
RB
FIX
OFF
MUSIC/
SYMULATED
SURR
OFF
MIXING
AMP
TREBLE
BASS
VAR
-
+
FIX
I2C BUS DECODER + LATCHES
79dB CONTROL
SPKR
ATT ₂₇
MUTE
LOUT
21
SCL
22
SDA
20
DIG GND
30K
31.5dB
control
10 11
MUXOUT(R)
2.2µF
LPF
9KHz
EFFECT
CONTROL
MIXING
AMP
TREBLE
SURR
OFF
BASS
FIX
VAR
Vref
SUPPLY
16 24
25 23
LP
VS
CREF
1.2nF
22µF
19
TREBLE-R
5.6nF
12
BIN(R)
RB
13
BOUT(R)
100nF
5.6K
100nF
SPKR
+
ATT ₂₆
-
ROUT
MUTE
79dB CONTROL
D01AU1248
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