Method and apparatus for sequencing power in a photodetector...

Details Method and apparatus for sequencing power in a photodetector... Method and apparatus for sequencing power in a photodetector...

2001-09-24

2004-11-09

Porta, David (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S2140LS

Reexamination Certificate

active

06815655

ABSTRACT:

TECHNICAL FIELD
This disclosure relates generally to photodetector circuits, and in particular but not exclusively, relates to power-up and power-down circuits for use with photodetector circuits.
BACKGROUND
Photodetector circuits are widely used in optical receiver applications. One type of photodetector is implemented with a photodiode and a trans-impedance pre-amplifier. In operation, the photodiode is reverse biased, with light causing the photodiode to generate a reverse current that is amplified by the pre-amplifier. The pre-amplifier typically includes a gain resistor that is connected between the input and output leads of the pre-amplifier.
Such photodetector circuits used in fiber optic applications are relatively expensive. In powering these photodetector circuits, care should be taken to prevent forward biasing of the photodiode because the photodiode can be damaged when it conducts relatively large currents.


REFERENCES:
patent: 3758796 (1973-09-01), Years
patent: 4266237 (1981-05-01), Hendrickson
patent: 4567363 (1986-01-01), Goodnough
patent: 5886252 (1999-03-01), Lennert et al.
patent: 6359517 (2002-03-01), Colaco

Affiliated with

Also associated with

Rating

Method and apparatus for sequencing power in a photodetector... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for sequencing power in a photodetector..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for sequencing power in a photodetector... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3308586