The common-base differential amplifier and applications revisited

Maundy B. J., Ozoguz S., Elwakil A. S., Gift S. J. G.

MICROELECTRONICS JOURNAL, vol.63, pp.8-19, 2017 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 63
  • Publication Date: 2017
  • Doi Number: 10.1016/j.mejo.2017.02.014
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.8-19
  • Istanbul Technical University Affiliated: Yes


In this paper, the common-base (or-gate) differential amplifier is revisited and presented. A variant of the same amplifier is also presented and both are analyzed using standard two-port network analysis. Their high frequency behavior, differences in biasing details and noise analysis are also compared and contrasted. New differential input-output filters are derived for the common-base (or-gate) differential amplifier as well as a new low impedance Norton amplifier. Simulations using Spectre in a 90 nm UMC CMOS process of several of the filters as well as experiments conducted using discrete transistors confirm the theoretical results.