• DocumentCode
    888004
  • Title

    A monolithic dual tone multifrequency receiver

  • Author

    White, Bertram J. ; Jacobs, Gordon M. ; Landsburg, George F.

  • Volume
    14
  • Issue
    6
  • fYear
    1979
  • Firstpage
    991
  • Lastpage
    997
  • Abstract
    A fully integrated DTMF receiver has been fabricated on a single CMOS chip requiring only three external passive components. The circuit combines precision filters, zero crossing detectors and amplitude detectors with digital logic. Switched capacitor techniques are used to implement high-pass, bandpass, and bandstop filters. The receiver architecture and circuit implementation are described.
  • Keywords
    Band-pass filters; Field effect integrated circuits; High-pass filters; Switched filters; Telephone receivers; band-pass filters; field effect integrated circuits; high-pass filters; switched filters; telephone receivers; Band pass filters; Capacitors; Circuits; Detectors; Frequency; Jacobian matrices; Large scale integration; Silicon; Telephony;
  • fLanguage
    English
  • Journal_Title
    Solid-State Circuits, IEEE Journal of
  • Publisher
    ieee
  • ISSN
    0018-9200
  • Type

    jour

  • DOI
    10.1109/JSSC.1979.1051307
  • Filename
    1051307
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=888004