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A CMOS variable-gain transimpedance amplifier for infrared wireless data communications

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3 Author(s)
R. Y. Chen ; Electron. Eng. Dept., Nat. Yunlin Univ. of Sci. & Technol., Taiwan ; Tsung-Shuen Hung ; Chih-Yuan Hung

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.

Published in:

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

Date of Conference:

8-12 Jan. 2005