High-gain transimpedance amplifier in InP-based HBT technology forthe receiver in 40-Gb/s optical-fiber TDM links

摘要

A monolithic integrated transimpedance amplifier for the receivernin a 40-Gb/s optical-fiber TDM system has been fabricated in annInP-based HBT technology. Despite its high gain (transimpedance of 2nkΩ in the limiting mode, 10 kΩ in the linear mode) thencomplete amplifier was realized on a single chip. Clear output eyendiagrams were measured up to 43 Gb/s under realistic driving conditions.nThe voltage swing of 0.6 Vpp at the differential 50 Ωnoutput does not change within the demanded input dynamic range of 6 dB.nAt the upper input current level even 48 Gb/s were achieved. The powernconsumption is approximately 600 mW at a single supply voltage of -5.5 V