• DocumentCode
    272912
  • Title

    Slew rate enhancement based on use of squaring circuits

  • Author

    Valero, M.R. ; Thoutam, S. ; Ramírez-Angulo, J. ; Lopez-Martín, A. ; Carvajal, R.G.

  • Author_Institution
    Group of Electron. Design-I3A, Univ. of Zaragoza, Zaragoza, Spain
  • Volume
    51
  • Issue
    3
  • fYear
    2015
  • fDate
    2 5 2015
  • Firstpage
    219
  • Lastpage
    220
  • Abstract
    A squaring circuit is introduced that boosts the tail current source of an opamp to improve its slew rate. It operates as a differential voltage magnitude detector, which generates opamp tail currents proportional to the magnitude (square) of the opamp´s differential input voltage. Experimental results from a fabricated test chip verify current and slew rate enhancement between 900 and 1400% with respect to its initial value with <;20% static current increase.
  • Keywords
    constant current sources; detector circuits; operational amplifiers; SC; current source; differential input voltage magnitude detector; op-amp; slew rate enhancement; squaring circuit;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el.2014.3975
  • Filename
    7029792
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=272912