• DocumentCode
    2981050
  • Title

    A quadrature data-dependent DEM algorithm to improve image rejection of a complex /spl Sigma//spl Delta/ modulator

  • Author

    Breems, Lucien J. ; Dijkmans, E.C. ; Huijsing, J.H.

  • Author_Institution
    Philips Res. Lab., Eindhoven, Netherlands
  • fYear
    2001
  • fDate
    7-7 Feb. 2001
  • Firstpage
    48
  • Lastpage
    49
  • Abstract
    A data-dependent DEM algorithm is controlled by the quadrature bitstreams of a complex /spl Sigma//spl Delta/ modulator. The quadrature feedback paths of the modulator are dynamically matched, without increasing the in-band noise. Test chips with an initial 20% mismatch have a typical image rejection ratio of 61 dB with DEM.
  • Keywords
    sigma-delta modulation; complex sigma-delta modulator; data dependent DEM algorithm; dynamic element matching; image rejection ratio; in-band noise; oversampling ADC; quadrature bitstream; quadrature feedback path; Choppers; Demodulation; Equations; Feedback; Frequency; Impedance; Interference; Quantization; Resistors; Switches;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Solid-State Circuits Conference, 2001. Digest of Technical Papers. ISSCC. 2001 IEEE International
  • Conference_Location
    San Francisco, CA, USA
  • ISSN
    0193-6530
  • Print_ISBN
    0-7803-6608-5
  • Type

    conf

  • DOI
    10.1109/ISSCC.2001.912540
  • Filename
    912540
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2981050