cxa1897q Sony Electronics, cxa1897q Datasheet - Page 2

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

Block Diagram
DOLBY NR
ON/OFF/HI
D L OUT1
D PB IN1
GND
AMS
OUT
Vcc
AGC IN
Vcc
MPX
AMS GAIN
D REC IN1
D IREF
TC
AGC
OUT
RFC
10
11
12
4
1
2
3
5
6
7
8
9
10k
GND GND
13
48
GND
+
+
14
47
+
PB
15
46
I R E F
I R E F
REC
GND
P B E Q
16
45
+
C T L
R E C
E Q
17
44
R/P HEAD
DECK B
18
—2—
43
PB HEAD
+
A G C
DECK A
42
19
+
R E C
R E C E Q
E Q
41
20
C T L
GND GND
GND
M U T E
40
21
+
REC
PB
39
22
38
23
+
GND
+
GND GND
37
24
+
GND
10k
36
35
34
33
32
30
29
28
27
26
25
31
AGC
D REC IN2
TC
VG
OUT
IREF
MPX
D PB IN2
REC
DOLBY NR
REC/PB
D L OUT2
AGC TC
AGC IN
MUTE
CXA1897Q