A CMOS infrared wireless optical receiver front-end with a variable-gain fully-differential transimpedance amplifier

A CMOS infrared wireless optical receiver front-end with a variable-gain fully-differential transimpedance amplifier

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. More than a triple variation of the transimpedance gain, from 0.3 k/spl Omega/...

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Veröffentlicht in:IEEE transactions on consumer electronics 2005-05, Vol.51 (2), p.424-429
Hauptverfasser: Chen, R.Y., Tsung-Shuen Hung, Chih-Yuan Hung
Format: Artikel
Sprache:eng
Schlagworte:
Amplification
Amplifiers
Bandwidth
CMOS
Electronics
Feedback amplifiers
Gain
Infrared
Optical amplifiers
Optical feedback
Optical receivers
Photodiodes
Power amplifiers
Preamplifiers
Receivers
Semiconductor optical amplifiers
Stimulated emission
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Zusammenfassung: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. More than a triple variation of the transimpedance gain, from 0.3 k/spl Omega/ to 1 k/spl Omega/, the variable-gain transimpedance amplifier achieves desirable gain-bandwidth independence. For an infrared wireless optical receiver front-end employing the transimpedance amplifier, the optical preamplifier achieves a transimpedance gain of 66 dB/spl Omega/ and a bandwidth of 114 MHz with a 5 pF photodiode capacitance, and a power consumption of 17.4 mW.
ISSN:0098-3063
1558-4127
DOI:10.1109/TCE.2005.1467982