CXA2074Q データシートの表示（PDF） - Sony Semiconductor
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CXA2074Q Datasheet PDF : 38 Pages
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CXA2074Q/S
Pin No.
QFP SDIP
Symbol
Pin
voltage
31 32 VCAIN 4.0V
Equivalent circuit
VCC
47k
47k
20k
VCC
32
(31)
Description
VCA input pin.
Input the variable
de-emphasis output signal
from Pin 31 (30) via a
coupling capacitor.
32 33 VCATC 1.7V
×4
×4
VCC
33
(32)
↓
4k
↓
20k
50µ
7.5µ
Determine the restoration
time constant of the VCA
control effective value
detection circuit.
(The specified restoration
time constant can be
obtained by connecting a
10µF capacitor between this
pin and GND.)
33 34 VCAWGT 4.0V
VCC
40k 40k 3p
2.9V
36k
↓
4k ↓ 30k
50µ
8µ
580
34
580 147
(33)
8k
Weight the VCA control
effective value detection
circuit.
(Connect a 1µF capacitor
and a 3.9kΩ resistor in series
between this pin and GND.)
35 35 AUX1-R 4.0V
36 36 AUX1-L 4.0V
37 37 AUX2-R 4.0V
38 38 AUX2-L 4.0V
10k
147
27.5k
47k
4V
VCC
35
36
37
38
Right channel external input
1 pin.
Left channel external input
1 pin.
Right channel external input
2 pin.
Left channel external input
2 pin.
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