cxa1998aq Sony Electronics, cxa1998aq Datasheet - Page 3

• Manufacturer Part Number: cxa1998aq
• Description: Recording/playback Equalizer Amplifier
• Manufacturer: Sony Electronics

Pin Description
Pin
No.
2
3
4
1
GP CAL
A EQ
B EQ
AGC TC
Symbol
voltage
(OPEN)
1.2V
2.5V
0.0V
DC
—
I/O
—
—
I
I
resistance
53k
—
—
—
I/O
3
GND
V
2
CC
4
147 50k
GND
V
GND
1
V
– 3 –
CC
GND
CC
Vcc
(Ta = 25°C, V
200
Equivalent circuit
147
5k
147
GND
2
147
5k
2
2
500
500
GND
GND
CC
100k
30k
GND
2
5k
= 8V, V
V
Vcc
CC
V
200
CC
4
V
DD
CC
= 5V, no signal, RESET ON)
Connects a resistor
for determining the
high-band peak gain
of recording equalizer.
Reference setting
resistance is 27k .
Deck A equalizer
switch.
Deck B equalizer
switch.
Connects a resistor
and capacitor for
determining AGC
attack/recovery time
constants.
Low: 120µs EQ
High: 70µs EQ
Low: NORMAL TAPE,
Medium: Cro
High: METAL TAPE,
Description
120µs EQ
70µs EQ
70µs EQ
CXA1998AQ
2
TAPE,