Low-Voltage CMOS Variable Preamplifier for Fiber-Based Gigabit Ethernet

摘要

In this paper we present a low-voltage preamplifier destined for optical-fiber communication front-ends in the standard Gigabit Ethernet. Designed in a low-cost 0.35 μm CMOS technology, the circuit can work with a single 1.8 V supply voltage, consumes only 6.2 mW and exhibits a tunable transimpedance from 50 to 65 dBΩ with bit rates up to 1.5 Gb/s.