A 93dB-ohm 2.5Gb/s CMOS burst-mode optical receiver with internal reset creation

Abstract

This paper presents a 2.5Gb/s burst-mode optical receiver with quick response in a 0.18 mu m CMOS process. A dual-mode transimpedance amplifier is used to achieve a dynamic range of 19dB. The internal reset signal created by the limiting amplifier is more reliable due to the increased net gain compared to prior designs. The receiver achieves 93dB Omega total differential transimpedance gain, 1.56GHz optical bandwidth, and fast response time of less than 10ns. This IC dissipates 146mW from a 1.8V supply.