• DocumentCode
    1521629
  • Title

    Digital frequency and Q tuning technique for low-voltage active filters

  • Author

    Huang, H. ; Lee, E.K.F.

  • Author_Institution
    Dept. of Electr. Eng. & Comput. Eng., Iowa State Univ., Ames, IA, USA
  • Volume
    35
  • Issue
    8
  • fYear
    1999
  • fDate
    4/15/1999 12:00:00 AM
  • Firstpage
    635
  • Lastpage
    636
  • Abstract
    A digital frequency and Q tuning technique is proposed for low-voltage (1 V) active RC biquad filters that uses programmable capacitor arrays (PCAs). The proposed technique does not require any peak detectors, which are difficult to implement at low voltages. Instead, it uses a small number of analogue comparators, a digital comparator and binary counters to adjust the PCAs
  • Keywords
    Q-factor; RC circuits; biquadratic filters; circuit tuning; low-power electronics; programmable filters; 1 V; Q tuning; analogue comparator; binary counter; digital comparator; digital tuning; frequency tuning; low-voltage active RC biquad filter; programmable capacitor array;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el:19990441
  • Filename
    771001