• DocumentCode
    18346
  • Title

    Accuracy-enhanced switched-capacitor stages using low-gain opamps

  • Author

    Zhang, Ye ; Chen, Chun-Hung ; Temes, Gabor C.

  • Author_Institution
    Dept. of Electr. & Comput. Sci., Oregon State Univ., Corvallis, OR, USA
  • Volume
    49
  • Issue
    1
  • fYear
    2013
  • fDate
    January 3 2013
  • Firstpage
    22
  • Lastpage
    23
  • Abstract
    A charge compensation technique is proposed for switched capacitor stages with low-gain opamps. It cancels the error charge flow during the operation phase, thus enhancing the accuracy. A capacitive T-network can be employed to implement the resulting large capacitor ratio. A switched-capacitor integrator and a sample-and-hold stage were designed and simulated to verify the proposed technique.
  • Keywords
    charge compensation; integrating circuits; operational amplifiers; sample and hold circuits; switched capacitor networks; accuracy-enhanced switched-capacitor stage; capacitive T-network; capacitor ratio; charge compensation technique; error charge flow; low-gain opamp; operation phase; sample-and-hold stage; switched-capacitor integrator;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el.2012.3827
  • Filename
    6415425
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=18346