A bandwidth-compensated transimpedance amplifier for multigigabit optical receivers

In this paper, a transimpedance amplifier with an automatic bandwidth compensation circuit is presented. The proposed topology includes a transimpedance amplifier which features a bandwidth control input, and a replica bias circuit to sense the active device dc parameter variations. A Monte Carlo an...

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Bibliographic Details
Published in:Microwave and optical technology letters 2001-07, Vol.30 (2), p.79-81
Main Authors: Centurelli, F., Luzzi, R., Scotti, G., Trifiletti, A.
Format: Article
Language:English
Subjects:
bandwidth compensation
transimpedance amplifier
yield improvement
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Summary:In this paper, a transimpedance amplifier with an automatic bandwidth compensation circuit is presented. The proposed topology includes a transimpedance amplifier which features a bandwidth control input, and a replica bias circuit to sense the active device dc parameter variations. A Monte Carlo analysis shows a 140 MHz bandwidth variation around 8.1 GHz when a ±50% variation is considered for the transconductance and threshold voltage of the HEMT devices. The same simulation shows a 490 MHz bandwidth variation if the compensation circuit is removed. © 2001 John Wiley & Sons, Inc. Microwave Opt Technol Lett 30: 79–81, 2001.
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.1226