• DocumentCode
    1318397
  • Title

    Improved common-mode feedback circuit suitable for operational transconductance amplifiers with tuning

  • Author

    Wu, Po-Han ; Schaumann, R.

  • Author_Institution
    Dept. of Electr. & Comput. Eng., Portland State Univ., OR, USA
  • Volume
    27
  • Issue
    2
  • fYear
    1991
  • Firstpage
    117
  • Lastpage
    118
  • Abstract
    A simple modification is proposed for a popular common-mode feedback circuit used in operational amplifiers, such that it can be used in an operational transconductance amplifier (OTA) without leading to significant DC offset caused by the unavoidable tuning of the OTA. Simulation results show that the improved circuit has nearly zero DC offset for the whole tuning range.
  • Keywords
    feedback; linear network analysis; operational amplifiers; tuning; OTA; common-mode feedback circuit; operational transconductance amplifiers; tuning; zero DC offset;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el:19910078
  • Filename
    83154
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1318397