V23818-N15-L6xx

Pin Configuration

Data Sheet

7

2003-09-10

PMon– / PMon+

The DC voltage that can be measured across pins 19 and 20 is proportional to the laser

monitor diode current through a 200

Ω resistor in its path. This output remains constant

and can be used to monitor correct operation of laser control circuitry, a deviation

indicates faulty behaviour. A schematic and typical behaviour are shown in Figure 7 and

Figure 8. The SFF MSA defines that

V

Infineon OC-48 transceiver has a nominal range of 0.04 to 0.08 V. Leave pins

unconnected if feature is not required.

Figure 7

Power Monitor – Transceiver Internal

Figure 8

Typical Behaviour of Power Monitor Voltage over Temperature

200

Ω

3 k

Ω

3 k

Ω

File: 1311

R

Pin 20

Pin 19

0.00

0.01

0.02

0.03

0.04

0.05

0.06

0.07

0.08

0

1020

3040

5060

70

Temperature (˚C)

File: 1313