2.5 Gbit/s CMOS transimpedance amplifier for optical communication applications

A 2.5 Gbit/s transimpedance amplifier is realised using a 0.6 /spl mu/m CMOS technology. By exploiting a regulated cascode configuration as the input stage, the amplifier achieves significant bandwidth improvement. The measured results demonstrate 2.2 GHz bandwidth for 0.5 pF photodiode capacitance with 55.3 dB/spl Omega/ transimpedance gain.