Design of an Inverter-Base, Active-Feedback, Low-Power Transimpedance Amplifier Operating at 10 Gbps

Abstract

In this paper, a low-power structure as an inverter-base circuit is reported for broadband applications. The focus in this study is in obtaining a low-power structure. By applying cascoded structure to an inverter as a feedforward network in the structure, the DC current and hence the power dissipation are decreased. Also, by adding a two-stage active feedback, which yields no miller capacitance, to the cascoded inverter, the structure of the TIA is completed. Simulation results in HSPICE using 90[Formula: see text]nm CMOS technology parameters show 41[Formula: see text]dB[Formula: see text] transimpedance gain, 6.5[Formula: see text]GHz frequency bandwidth and 2.7[Formula: see text][Formula: see text]Arms input referred noise, which consumes only 1.67[Formula: see text]mw power at 1[Formula: see text]V supply. Results and analysis indicate that the proposed TIA is suitable to work as a low-power 10 Gbps transimpedance amplifier in an optical receiver.