N. Ula (USA) and S.M.R. Hasan (UAE)
Simulation, Optimization, broad-band amplifier, inductivepeaking, optical transceiver.
This paper describes the simulation and optimization of a
low noise CMOS current feedback transimpedance
amplifier using a low-cost Agilent 0.5m 3M2P CMOS
process technology. The bandwidth of the amplifier was
extended using the inductive peaking technique, and,
simulation results indicated a 3db bandwidth of 3.5 GHz
with a transimpedance gain of 60dB ohms. The dynamic
range of the amplifier was high enough to enable an output
voltage swing of around 400mV for a test input current of
100A. The output noise voltage spectral density was
12nV/sqrt(Hz) (with a peak of 25nV/sqrt(Hz)), while, the
input referred noise current spectral density was below
20pA/sqrt(Hz) within the amplifier frequency band.