• DocumentCode
    2158610
  • Title

    A fully-digital beat-frequency based ADC achieving 39dB SNDR for a 1.6mVpp input signal

  • Author

    Bongjin Kim ; Weichao Xu ; Kim, Chul Han

  • Author_Institution
    Univ. of Minnesota, Minneapolis, MN, USA
  • fYear
    2013
  • fDate
    22-25 Sept. 2013
  • Firstpage
    1
  • Lastpage
    4
  • Abstract
    A fully-digital VCO-based ADC featuring a novel beat frequency detection scheme is demonstrated in 65nm LP CMOS. The proposed beat frequency based ADC is unique compared to previous VCO-based ADCs in that it is highly effective in measuring extremely small changes (e.g., 0.01%) in the VCO frequency within a short sampling time (e.g., 100 VCO periods). Direct amplifier-less A-to-D conversion of a 1.6mVpp differential input signal with 39dB SNDR and 6.2 ENOB was experimentally verified.
  • Keywords
    CMOS integrated circuits; analogue-digital conversion; voltage-controlled oscillators; ADC; ENOB; LP CMOS; SNDR; direct amplifier-less A-to-D conversion; fully-digital VCO; fully-digital beat-frequency; CMOS integrated circuits; Frequency measurement; Semiconductor device measurement; Sensors; Signal resolution; Voltage measurement; Voltage-controlled oscillators;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Custom Integrated Circuits Conference (CICC), 2013 IEEE
  • Conference_Location
    San Jose, CA
  • Type

    conf

  • DOI
    10.1109/CICC.2013.6658553
  • Filename
    6658553
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2158610