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Gain enhancement and input parasitic compensation in MMIC transimpedance amplifiers for optical receivers
Author(s) -
Orengo Giancarlo,
Limiti Ernesto,
Acciari Gianluca,
Giannini Franco
Publication year - 1998
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/(sici)1098-2760(19980420)17:6<377::aid-mop11>3.0.co;2-y
Subject(s) - transimpedance amplifier , parasitic capacitance , monolithic microwave integrated circuit , amplifier , photodiode , bandwidth (computing) , electrical engineering , gain–bandwidth product , optical amplifier , electronic engineering , gigabit , optoelectronics , engineering , capacitance , operational amplifier , physics , optics , telecommunications , laser , electrode , quantum mechanics
A technology‐independent design solution, based on inductive peaking and feedback techniques, is described and applied to the design of GaAs integrated amplifiers for optical receivers. Transimpedance and gain peaking amplifiers are cascaded to increase the gain and to reduce the effect of the photodetector diode parasitic capacitance on the transimpedance bandwidth. A monolithic test vehicle of the methodology has been realized: measured performances include a transimpedance gain of 65 dBQ and a bandwidth of 3.4 GHz from quasi‐dc for the unloaded amplifier. The estimated bandwidth, using a low‐cost 1 pF input photodiode, is 1.9 GHz, fulfilling the system needs for 2.5 Gbit/s optical links. © 1998 John Wiley & Sons, Inc. Microwave Opt Technol Lett 17: 377–383, 1998.