• DocumentCode
    2832420
  • Title

    Intermodulation in sigma-delta D/A converters

  • Author

    Karema, Teppo ; Ritoniemi, Tapani ; Tenhunen, Hannu

  • Author_Institution
    Signal Process. Lab., Tampere Univ. of Technol., Finland
  • fYear
    1991
  • fDate
    11-14 Jun 1991
  • Firstpage
    1625
  • Abstract
    A novel model for the quantization noise modulation to the baseband is proposed and analyzed. It is shown that the quantization noise intermodulation is independent of the input signal level for practical oversampling ratios. The intermodulation is caused by the nonlinearities of the sample and hold device in the 1-bit D/A. Useful equations for estimating the modulating quantization noise in the baseband from measurable parameters are presented. Several circuit considerations are discussed to reduce the unwanted effects of the nonlinearities
  • Keywords
    delta modulation; digital-analogue conversion; intermodulation; modulators; random noise; 1 bit; baseband noise; intermodulation; oversampling ratios; quantization noise modulation; sample and hold device nonlinearities; sigma-delta D/A converters; Baseband; Circuit noise; Delta-sigma modulation; Filters; Noise level; Noise shaping; Quantization; Signal processing; Signal to noise ratio; Voltage;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Circuits and Systems, 1991., IEEE International Sympoisum on
  • Print_ISBN
    0-7803-0050-5
  • Type

    conf

  • DOI
    10.1109/ISCAS.1991.176694
  • Filename
    176694