A 1.8 V, 10 Gbps fully integrated CMOS optical receiver analog front end

Abstract

A fully integrated 10 Gbps optical receiver analog front-end, includes a trans-impedance amplifier (TIA) and a limiting amplifier (LA), is fabricated using a 0.18 mum CMOS technology. The receiver front-end provides a conversion gain up to 85 dBOmega and -3 dB bandwidth of 7.6 GHz. The sensitivity of the optical receiver is - 13 dBm at a bit-error rate of 10(-12) with 2(31)-1 pseudo-random bits. 3-D symmetric transformers are utilized in the AFE design for bandwidth enhancement.