an8806sb Panasonic Corporation of North America, an8806sb Datasheet - Page 6

• Manufacturer Part Number: an8806sb
• Description: Three-beam Method Head Amplifier Ic For Cd Player
• Manufacturer: Panasonic Corporation of North America

AN8806SB
• RFAmplifier
• Focus Error Amplifier
FEOUT is 96k , when resistance between FE and FEOUT is 20k .
57.6k , when resistance between RF–and RFOUT is 12k .
Operational Description
As shown in Figure 1, RF signals are generated by three-beam method pick-up. Equivalent resistance to RFOUT (Pin7) is
As shown in Figure 2, the operation result of (A+ C) – (B + D) is outputted to FEOUT (Pin27). Equivalent resistance to
A
D
A
D
V
C
B
C
B
C
R
RF (T)
29
=48k
36
35
36
35
(The values shown below are design values when supply voltage V
10k
R
–
+
–
+
–
+
–
+
–
+
RF
48k
48k
48k
48k
Figure 2 : Focus Error Amplifier
Figure 1 : RF Amplifier
VCBA
B+D
10k
10k
A+C
f
C
2
= 30kHz
6
–
+
–
+
R
RF
12k
ICs for CD/CD-ROM Player
7
20k
CC
= 5V.)
28
–
+
20k
R
FE
Light level
Dark leve
27