CXA1734S
Pin
No.
Pin
Symbol
Equivalent circuit
Description
voltage
VCC
40k
40k 3p
Weight the VCA control
effective value detection
circuit.
500
25
25
VCAWGT
4.0V
(Connect a 1 µF capacitor
and a 3.9 kΩ resistor in
series between this pin and
GND.)
147
2.9V
500
36k
4k
30k
8k
↓
↓
50µ
8µ
VCC
Determine the restoration
time constant of the VCA
control effective value
detection circuit.
26
×4
×4
26
VCATC
1.7V
The specified restoration
time constant can be
obtained by connecting a
10 µF capacitor between
this pin and GND.
4k
20k
↓
50µ
↓
7.5µ
Set the reference current
for the effective value
detection timing current.
The reference current is
adjusted with the BUS
DATA “SPECTRAL” based
on the current which flows
to this pin.
VCC
40k
40k 30k 20k 40k 10k
2.6V
27
ITIME
1.3V
The timing current
determines the restoration
time constant of the
detection circuit and the
variable de-emphasis
characteristics.
30p 1.8k
27
47k
147
25k
×4
Connect a 43 kΩ (±1%)
resistor between this pin
and GND.
—8—
SONY [ SONY CORPORATION ]
