An energy-efficient low frequency-dependence switching technique for SAR ADCs

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44 Scopus citations


This brief presents a highly energy-efficient switching scheme for successive approximation register (SAR) analog-to-digital converters that achieves a 95% reduction in switching energy over the conventional SAR. The switching energy has been calculated by taking into account both the power drawn from reference and the power consumed by the switches themselves. The frequency dependence of the switching energy has been studied and the proposed technique presents ways to maintain high energy efficiency over the entire frequency range of operation. The results have been verified through behavioral and SPICE simulations.

Original languageEnglish (US)
Article number6750043
Pages (from-to)294-298
Number of pages5
JournalIEEE Transactions on Circuits and Systems II: Express Briefs
Issue number5
StatePublished - May 2014
Externally publishedYes


  • Analog-to-digital converter (ADC)
  • digital-to-analog converter (DAC)
  • successive approximation register (SAR)
  • switching energy

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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