Photodiode circuit with improved response time

Details Photodiode circuit with improved response time Photodiode circuit with improved response time

2007-05-22

2007-05-22

Allen, Stephone B. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S214100, C327S321000

Reexamination Certificate

active

11084584

ABSTRACT:
A circuit has a voltage source, a node, a photodetector electrically coupled between the voltage source and the node, a resistor electrically coupled between the node and ground, and a voltage clamp electrically connected to the node, the voltage clamp configured to maintain a reverse bias of the photodetector above a predetermined level.

REFERENCES:
patent: 3601625 (1971-08-01), Redwine et al.
patent: 4005342 (1977-01-01), Davis
patent: 4131928 (1978-12-01), Davis et al.
patent: 5809102 (1998-09-01), Nakashiba
patent: 5945877 (1999-08-01), Elango et al.
patent: 6078204 (2000-06-01), Cooper et al.
patent: 6667607 (2003-12-01), Kawamura et al.
patent: 2004/0195494 (2004-10-01), Kok et al.
Catalog, Photodiode Characteristics and Applications, UDT Sensors, Inc., 5-14 (2003).
Data Sheet, Surface Mount Silicon PIN Photodiode QSB34, Fairchild Semiconductor Corporation, 3 (Oct. 19, 2004).

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