cxa1897q Sony Electronics, cxa1897q Datasheet - Page 9

• Manufacturer Part Number: cxa1897q
• Description: Dolby B Type Noise Reduction System With Recording/playback Equalizer
• Manufacturer: Sony Electronics

Pin
No.
36 GND
43 PB INA1
42 PB INA2
44 PB INB1
41 PB INB2
45 PB FB11
40 PB FB12
46 PB FB21
39 PB FB22
47 PB OUTA1
38 PB OUTA2 2.8V
48 PB OUTB1
37 PB OUTB2
Symbol
DC
voltage
0.0V
0.0V
1.4V
2.8V
I/O I/O
—
—
—
O
I
resistance
147
105k
70k
50k
—
—
43
42
44
41
GND
Vcc
46
39
47
38
48
37
GND
GND
147
70k
10k
Vcc
Vcc
Vcc
147
500
500
147
36
GND
6
Equivalent circuit
3
Vcc
6
—9—
10k
6
3
7k
GND
ON/OFF
GND
5k
2k
3
2
4
GND
50k
ON/OFF
GND
2
2
Vcc
4
1k
1k
2k
RFS
RFS
5k
210k
210k
147
RFS
5p
GND
Vcc
GND pin.
Connects the capacitors which
determine the 120µs, 70µs or
other time constant of the
playback equalizer.
Playback equalizer output pin.
The pin selected by the deck
AB switching has a low output
resistance; the other pin has a
50k output resistance.
45
40
Playback equalizer input
pin.
Playback equalizer
negative feedback pin.
Description
CXA1897Q