A 40Gb/s Transimpedance Amplifier Using Modified Regulated Cascode for Optical Fiber Communication


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This paper describes the design of a 40 Gb/s transimpedance amplifier (TIA) for high-density optical fiber communication system. This TIA incorporates modified regulated cascode (RGC), three order intersecting active feedback and passive feedback. Consuming a DC power of 14.5 mW, the single-ended circuit provides a transimpedance gain of 49.5 dB and a -3dB bandwidth up to 40 GHz in IBM 90-nm CMOS technology with a 1.2 V supply. Simulation results show the equivalent input noise current integrated from 1 MHz to 30 GHz is about 6.6 Arms



Edited by:

Wei Deng and Qi Luo




Y. M. Chen et al., "A 40Gb/s Transimpedance Amplifier Using Modified Regulated Cascode for Optical Fiber Communication", Applied Mechanics and Materials, Vols. 236-237, pp. 958-963, 2012

Online since:

November 2012




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