A new topology for a transimpedance amplifier with postfabrication bandwidth adjustment

Centurelli, Francesco; Germani, L.; Luzzi, R.; Tommasino, Pasquale; Trifiletti, Alessandro

doi:10.1002/(sici)1098-2760(20000405)25:1<47::aid-mop14>3.0.co;2-a

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A bandwidth‐compensated transimpedance amplifier for multigigabit optical receivers

Centurelli

Luzzi

Scotti

et al. 2001

Micro & Optical Tech Letters

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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.

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