• DocumentCode
    1130064
  • Title

    Multirate single-bit ΣΔ modulators

  • Author

    Colodro, Francisco ; Torralba, Antonio

  • Author_Institution
    Dept. de Ingenieria Electron., Univ. de Sevilla, Spain
  • Volume
    49
  • Issue
    9
  • fYear
    2002
  • fDate
    9/1/2002 12:00:00 AM
  • Firstpage
    629
  • Lastpage
    634
  • Abstract
    It has been shown that a multibit ΣΔ modulator can be built replacing the multibit quantizer in the forward path by a single-bit one, operating at a higher frequency, by an increase in the oversampling ratio of the last integrators of the loop. An improved topology is proposed here which obtains similar performances with single-bit feedback, overcoming drawbacks inherent to high resolution digital to analog converters.
  • Keywords
    circuit feedback; low-power electronics; modulators; sigma-delta modulation; ADC; analog-to-digital conversion; digital to analog converters; high resolution DACs; integrators; multirate single-bit ΣΔ modulators; oversampling ratio; sigma-delta modulator; single-bit feedback; Circuit noise; Delta modulation; Digital signal processing; Noise cancellation; Output feedback; Quantization; Transfer functions;
  • fLanguage
    English
  • Journal_Title
    Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    1057-7130
  • Type

    jour

  • DOI
    10.1109/TCSII.2002.807266
  • Filename
    1174085
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1130064