Operational Transconductance Amplifiers (OTAs)

  • Heimo Uhrmann
  • Robert Kolm
  • Horst Zimmermann
Part of the Springer Series in Advanced Microelectronics book series (MICROELECTR., volume 45)


This chapter describes operational transconductance amplifiers (OTAs) and their linearization for use in g m -C filters. Super-source-follower and digitally programmable OTAs are detailed. The common-mode feedback used in these OTAs and a buffer amplifier are described. A OTA implemented in 120 nm CMOS is introduced inclusive measured results.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Heimo Uhrmann
    • 1
  • Robert Kolm
    • 1
  • Horst Zimmermann
    • 1
  1. 1.EMCEVienna University of TechnologyViennaAustria

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