Using a capacitive-peaking (C-peaking) technique to increase the bandwidth of a transimpedance amplifier has been proposed. An analytical model for determining the peaking capacitance in the Butterworth-type transimpedance amplifier design has been derived, Based on this approach, we can design a larger bandwidth of a transimpedance amplifier. The low-frequency transimpedance gain in our fabricated amplifier is 0.95 K Omega, and the 3-dB bandwidth of the transimpedance amplifier is enhanced from 1.1 to 2.3 GHz without sacrificing its low-frequency gain by this C-peaking technique.
