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

fYear

2005

fDate

8-12 Jan. 2005

Firstpage

357

Lastpage

358

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics, 2005. ICCE. 2005 Digest of Technical Papers. International Conference on

Print_ISBN

0-7803-8838-0

Type

conf

DOI

10.1109/ICCE.2005.1429865

Filename

1429865