Title :
A 3-V CMOS optical preamplifier with DC photocurrent rejection
Author :
Phang, K. ; Johns, D.A.
Author_Institution :
Dept. of Electr. Eng. & Comput. Eng., Toronto Univ., Ont., Canada
Abstract :
This paper describes a CMOS optical preamplifier suitable for free-space, infrared wireless communications. The design is differential for improved power supply noise rejection, and an active cancellation scheme is used for eliminating dc photocurrents that are generated by ambient light. Making use of a 0.35-μm CMOS process, the preamplifier provides a transimpedance gain of 20 kΩ over a bandwidth from 1 MHz to 100 MHz and achieves 60 dB attenuation at dc
Keywords :
CMOS analogue integrated circuits; optical receivers; preamplifiers; 0.35 micron; 1 to 100 MHz; 3 V; CMOS optical preamplifier; DC photocurrent rejection; active cancellation; attenuation; bandwidth; differential design; free-space infrared wireless communication; optical receiver; power supply noise rejection; transimpedance gain; Active noise reduction; Noise cancellation; Noise generators; Optical attenuators; Optical fiber communication; Optical noise; Photoconductivity; Power supplies; Preamplifiers; Wireless communication;
Conference_Titel :
Circuits and Systems, 1998. ISCAS '98. Proceedings of the 1998 IEEE International Symposium on
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-4455-3
DOI :
10.1109/ISCAS.1998.704422
