Differential common base TIA with 56 dB Ohm gain and 45 GHz bandwidth in 130 nm SiGe
Paper in proceedings, 2017

We report a fully differential transimpedance amplifier (TIA) using common base and cascode topology designed with very low input impedance, suitable for integration with photodetectors in optical receiver systems. The on-wafer measurements show a 45 GHz bandwidth and 32 Gbps data transmission with 2.6 pJ/bit energy efficiency. The TIA has a differential gain of 56 dB Ohm and an Input referred noise current density of 30.6 pA/√Hz with a power consumption of 82 mW.

Common Base


Silicon Germanium

Optical Interconnects

Differential amplifier



Stavros Giannakopoulos

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

Zhongxia Simon He

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

Izzat Darwazeh

University College London (UCL)

Herbert Zirath

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

Microwave Conference (APMC), 2017 IEEE Asia Pacific


2017 IEEE Asia Pacific Microwave Conference, APMC 2017
Kuala Lumpur, Malaysia,

Areas of Advance

Information and Communication Technology


Kollberg Laboratory

Driving Forces

Sustainable development

Subject Categories


Communication Systems

Other Electrical Engineering, Electronic Engineering, Information Engineering



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