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A low energy switching scheme for SAR ADC with MSB-splitting DAC structure

  • Fufeng Wang
  • Jianhui WuEmail author
Mixed Signal Letter
  • 35 Downloads

Abstract

A high energy-efficiency tri-level switching scheme for successive approximation register converters (SAR ADCs) is presented. The most significant bit-splitting digital to analogue converter and the least significant bit-down technique are combined in this work. The proposed scheme achieves 99.76% saving in switching energy and 75% area reduction compared with the traditional scheme. Besides large switching energy saving, the common mode voltage keeps constant except the LSB conversion, which reduces the dynamic offset of the comparator.

Keywords

SAR ADC Switching scheme MSB-splitting capacitor LSB-down technique 

Notes

Acknowledgements

This work was supported by the Fundamental Research Funds for the Central Universities under the Project Number of 2242018K30006.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.National ASIC Research CenterSoutheast UniversityNanjingChina
  2. 2.Jiangsu Provincial Key Laboratory of Sensor Network TechnologySoutheast UniversityNanjingChina

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