CXA2555Q
Pin Description
Pin
Symbol
No.
I/O
O
Equivalent circuit
Description
10k
1k
1
1
LD
APC amplifier output.
55k
2
PD
I
APC amplifier input.
2
8k
10k
147
20k
20k
3
4
10k
147
16k
16k
3
4
PD1
PD2
I
I
Input of RF summing amplifier
and focus error amplifier.
174k
164k
7
GND
Ground.
147
147
147
5
6
8
Tracking error amplifier input for
Pins 5 and 6; tracking error
amplifier output for Pin 8;
tracking error amplifier low-
frequency gain setting for Pin
12; tracking error amplifier
output for Pin 13.
5
6
8
12
13
E
F
TE1
TE C
TE
I
I
O
I
147
147
160k
13
VCA
36.7k
O
12
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