Pin Description
Pin
No.
Symbol
I/O
Equivalent circuit
1 AGCVTH —
50µ
147
1
13.4k
10µ
CXA2550M/N
Description
Reference level variable pin for RF
level control.
The reference level can be varied by
the external resistor.
2 LD
O
10k
2
1k
APC amplifier output pin.
3 PD
8µ
I
147
3
20µ
55k
APC amplifier input pin.
10k
4 PD1
I
5 PD2
I
10k
Inversion input pin for RF I-V
amplifiers.
4
Connect these pins to the
5
photodiodes A + C and B + D
100µ
respectively. The current is supplied.
6 VEE
—
6
VEE
VEE pin.
–2–