Title :
A CMOS variable-gain transimpedance amplifier for infrared wireless data communications
Author :
Chen, Roger Yubtzuan ; Hung, Tsung-Shuen ; Hung, Chih-Yuan
Author_Institution :
Electron. Eng. Dept., Nat. Yunlin Univ. of Sci. & Technol., Taiwan
Abstract :
A CMOS infrared wireless optical receiver front-end is presented. A stable variable-gain fully differential transimpedance feedback amplifier is designed employing a current-mode amplifier as the feedforward gain element. For a more than three times variation of the transimpedance gain, from 0.3 kΩ to 1 kΩ, the variable-gain transimpedance amplifier achieves desirable gain-bandwidth independence.
Keywords :
CMOS analogue integrated circuits; current-mode circuits; electric impedance; feedback amplifiers; feedforward; infrared detectors; network analysis; optical receivers; CMOS amplifier; CMOS optical receiver front-end; current-mode amplifier; differential amplifier; feedback amplifier; feedforward; gain-bandwidth independence; infrared wireless data communications; transimpedance gain; variable-gain amplifier; variable-gain transimpedance amplifier; Bandwidth; Data communication; Differential amplifiers; Dynamic range; Feedback amplifiers; Optical amplifiers; Optical fiber communication; Optical receivers; Radiofrequency amplifiers; Wireless communication;
Conference_Titel :
Consumer Electronics, 2005. ICCE. 2005 Digest of Technical Papers. International Conference on
Print_ISBN :
0-7803-8838-0
DOI :
10.1109/ICCE.2005.1429865
