Abstract
A 2.3GHz transimpedance preamplifier designed in a TSMC 0.18/spl mu/m CMOS technology for optical communication is presented. A wide-swing cascode (WSC) topology provides high transimpedance gain, wide bandwidth, large output voltage swing, low input impedance and low power consumption. The SpectreS simulations show a transimpedance gain of 1.12K/spl Omega/ (61dB/spl Omega/), 3-dB bandwidth of 2.3GHz, low input impedance (<50/spl Omega/), dynamic range of 66dB, 650mV output voltage swing and 2.3mW power consumption with 1.5V voltage supply.
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