cxa1734s Sony Electronics, cxa1734s Datasheet - Page 8

• Manufacturer Part Number: cxa1734s
• Description: Us Audio Multiplexing Decoder
• Manufacturer: Sony Electronics

Pin
No.
25
26
27
VCAWGT
Symbol
VCATC
ITIME
voltage
4.0V
1.7V
1.3V
Pin
2.6V
50µ
47k
2.9V
4
25k
4k
36k
30p 1.8k
8µ
40k
50µ
40k
30k
Equivalent circuit
4
4k
40k
40k
4
—8—
7.5µ
3p
30k
147
8k
20k
20k
500 147
500
40k 10k
V
26
CC
25
V
V
CC
CC
27
Weight the VCA control
effective value detection
circuit.
(Connect a 1 µF capacitor
and a 3.9 k resistor in
series between this pin and
GND.)
Determine the restoration
time constant of the VCA
control effective value
detection circuit.
The specified restoration
time constant can be
obtained by connecting a
10 µF capacitor between
this pin and GND.
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.
The timing current
determines the restoration
time constant of the
detection circuit and the
variable de-emphasis
characteristics.
Connect a 43 k (±1%)
resistor between this pin
and GND.
Description
CXA1734S