• DocumentCode
    1987269
  • Title

    The inconvenient truth about alias rejection in continuous time ΔΣ converters

  • Author

    Pavan, Shanthi

  • Author_Institution
    Indian Inst. of Technol. - Madras, Chennai, India
  • fYear
    2011
  • fDate
    15-18 May 2011
  • Firstpage
    526
  • Lastpage
    529
  • Abstract
    Continuous-time Delta Sigma Modulators (CTDSM) have "Implicit Anti-Aliasing" is a commonly heard refrain in the data-converter design community. We show that this is not the case when a switched capacitor (SC) feedback DAC is used, thereby nullifying one of the principal advantages of continuous-time operation. We give an intuitive understanding of this phenomenon, and propose a power efficient circuit technique to improve alias rejection.
  • Keywords
    delta-sigma modulation; switched capacitor networks; alias rejection; continuous time ΔΣ converters; continuous-time delta sigma modulators; implicit anti-aliasing; switched capacitor feedback DAC; Capacitors; Clocks; Frequency modulation; Jitter; Switches; Thyristors;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Circuits and Systems (ISCAS), 2011 IEEE International Symposium on
  • Conference_Location
    Rio de Janeiro
  • ISSN
    0271-4302
  • Print_ISBN
    978-1-4244-9473-6
  • Electronic_ISBN
    0271-4302
  • Type

    conf

  • DOI
    10.1109/ISCAS.2011.5937618
  • Filename
    5937618
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1987269