cxa2568m Sony Electronics, cxa2568m Datasheet - Page 10

• Manufacturer Part Number: cxa2568m
• Description: Rf Amplifier For Cd Players
• Manufacturer: Sony Electronics

Description of Functions
RF Amplifier
These signals are added by the RF summing amplifier and equalized by the RF equalizing amplifier and then
output to Pin 16. When the RF signal is equalized, an equalizing circuit is added to Pin 15.
Focus Error Amplifier
Each signal current from the photodiodes A, B, C and D is I-V converted, and input to Pins 5, 6, 7 and 8.
The operation of (B+D)–(A+C) is performed and the signal is output to Pin 14.
GND
GND
A
B
C
D
A
B
C
D
I-V
I-V
I-V
I-V
I-V
I-V
I-V
I-V
A
B
C
D
A
B
C
D
5
6
7
8
5
6
7
8
23.3k
23.3k
23.3k
23.3k
24k
24k
24k
24k
174k
RF SUMMING AMP
VC
VC
4.2k
—10—
25p
14k
174k
25p
5k
FOCUS
ERROR AMP
VC
RF EQAMP
4.3k
5.7k
25.4k
14
15
16
FE
RFO
REF
V
CC
RFOUT
FEOUT
CXA2568M