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Study of modified noise-shaper architectures for oversampled sigma-delta DACs
Linköping University, Department of Electrical Engineering, Electronics System. Linköping University, The Institute of Technology.
Linköping University, Department of Electrical Engineering, Electronics System. Linköping University, The Institute of Technology.
2010 (English)In: NORCHIP, 2010, IEEE , 2010, 1-4 p.Conference paper, Published paper (Other academic)
Abstract [en]

In this paper, modified low-complex, hybrid architectures for digital, oversampled sigma-delta digital-to-analog converters (ΣΔDACs) are explored in terms of signal-to-noise ratio (SNR) and subDAC complexity. The studied techniques illustrate the trade-off in terms of noise-shaper and DAC implementation complexity and loss in SNR. It is found that a fair amount of improvement in SNR is achieved by maintaining low-complexity of noise shaper. The complexity of the subDAC is yet a parameter, directly related to the number of output bits from the noise shaper. Two different architectures are investigated with respect to subDAC complexity and noise shaper complexity. It is shown that the required number of DAC unit elements (DUE) can be reduced to half.

Place, publisher, year, edition, pages
IEEE , 2010. 1-4 p.
Keyword [en]
#x03A3; #x0394;DAC;DAC unit elements;digital-to-analog converters;hybrid architectures;noise shaper architectures;oversampled sigma-delta DAC;signal-to-noise ratio;subDAC complexity;digital-analogue conversion;sigma-delta modulation;
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:liu:diva-70624DOI: 10.1109/NORCHIP.2010.5669461ISBN: 978-1-4244-8972-5 (print)OAI: oai:DiVA.org:liu-70624DiVA: diva2:440977
Conference
NORCHIP 2010, 28th Norchip Conference, 15 - 16 November 2010, Tampere, Finland
Available from: 2011-09-14 Created: 2011-09-14 Last updated: 2011-10-13

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Afzal, NadeemWikner, Jacob

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf