FTLF1322S2GTR FINISAR [Finisar Corporation.], FTLF1322S2GTR Datasheet - Page 6

• Manufacturer Part Number: FTLF1322S2GTR
• Description: OC-12 SR-1/STM I-4 or OC-12 IR-1/STM S-4.1 2x10 SFF Transceiver
• Manufacturer: FINISAR [Finisar Corporation.]

FTLF1322S2xTR 2x10 Pin SFF Product Specification – October 2006
VIII. Analog Diagnostics Functions
Transmitter
Monitor photodiode current monitor
Laser bias current monitor
Notes:
© Finisar Corporation October, 2006 RevD
1. Pins 19 and 20 provide an analog voltage output proportional to the monitor photodiode current,
2. Pins 17 and 18 provide an analog voltage output proportional to the laser bias current, per the
3.
per the following formula: I
equivalent circuit.
following formula: I
circuit.
Parameter
Bmon+
Bmon-
BIAS
Analog monitoring function connections.
Laser
3 KΩ
3 KΩ
= .V(Bmon+ - Bmon-) / 10Ω. The figure below shows the equivalent
BIAS
Vcc
Symbol
Bmon+,
Pmon+,
Bmon-
Pmon-
10 Ω
= .V(Pmon+ - Pmon-) / 200Ω. The figure below shows the
Ibias
(T
op
= -40 to 85 °C, V
Min
0
0
Imon
200 Ω
Vcc
Typ
3 KΩ
3 KΩ
Photodidoe
CC
Monitor
= 3.00 to 3.60 Volts)
Pmon+
Pmon-
Max
Vcc
Vcc
F i n i s a r
Unit
V
V
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