A 4-channel 2.5Gb/s/channel 66dB/spl Omega/ inductorless transimpedance amplifier [optical receiver applications]

We present a fully differential transimpedance amplifier array with 4 parallel channels achieving an aggregate bandwidth of 10 Gb/s in 0.18 /spl mu/m digital CMOS technology. This array is intended to be bundled with an existing silicon-only photodetector to demonstrate the feasibility of monolithic silicon-based photo-detection in the GHz range. The presented transimpedance amplifier drives a load of up to 0.6 pF and handles photodiode capacitance of up to 1 pF.