Gain enhancement technique for a wideband transimpedance amplifier with common gate feedforward in optical communication

Abstract

This paper presents a gain enhancement technique for a Common-Gate Feedforward Transimpedance Amplifier (CGFW TIA). The proposed CGFW TIA achieves gain improvement through a current injection technique and an additional feedback path. It is designed using a 0.18-μm CMOS technology. Post-layout simulation results show that the proposed CGFW TIA improves the transimpedance gain by 1.76 times without an increase in power consumption compared to conventional designs.