cxa1897q Sony Electronics, cxa1897q Datasheet - Page 18

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

Application Circuit
Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for
any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same.
2.7k 4.7 /25V
2.7k
47 /25V
47 /25V
4.7 /25V
GND
180
180
10k
10k
10k
10k
42
44
46
47
37
38
39
40
41
43
45
48
PB OUTB2
PB OUTA2
PB FB22
PB FB12
PB INB2
PB INA2
PB INA1
PB INB1
PB FB11
PB FB21
PB OUTA1
PB OUTB1
GND GND GNDGND GND
GND
+
36
1
1k
GND
35
+
2
+
34
3
+
+
GND
33
4
32
+
+
5
CXA1897Q
+
+
31
6
MPX
MPX
GND
GND GND
–6dB
–6dB
+
+
30
7
+
—18—
GND
29
8
12mH
180p
12mH
180p
GND GND
GND
+
28
+
9
GND
27
10
GND
GND
+
+
+
26
11
+
REC OUT2
REC OUT1
D R OUT2
D R OUT1
DECK AB
GND
GND
REC IN2
REC IN1
12
25
GP CAL
FP CAL
SPEED
B EQ
A EQ
19
18
16
15
14
13
24
23
22
20
17
21
2.2 /25V
2.2 /25V
2.2 /25V
2.2 /25V
2.2 /25V
2.2 /25V
10k
10k
10k
27k
10k
10k
22k
820p
10k
22k
820p
GND
27k
4.7 /25V
0.47
4.7 /25V
5.6k
4.7 /25V
4.7 /25V
5.6k
150p
180p
150p
0.47
22k
180p
GND
12mH
NORM/HIGH
12mH
NORM/CrO2
/METAL
GND
GND
120 S/70 S
GND
DECK A
/DECK B
OSC
Bias
PB
PB
GND
CXA1897Q
REC
GND
REC