Energy-efficient DAC switching technique for single-ended SAR ADCs

A novel energy-efficient digital-to-analog converter (DAC) switching technique applicable to single-ended successive approximation register (SAR) analog-to-digital converter (ADC) is presented. The proposed DAC switching technique facilitates the ADC to digitize an input signal in the entire amplitu...

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Bibliographic Details
Published in:International journal of electronics and communications 2020-09, Vol.124, p.153334, Article 153334
Main Authors: Jajodia, Babita, Mahanta, Anil, Ahamed, Shaik Rafi
Format: Article
Language:English
Subjects:
Analog-to-Digital-Converter (ADC)
Digital-to-Analog-Converter (DAC)
Single-ended Successive Approximation Register (SAR)
Switching Technique
Wireless Body Area Networks (WBAN)
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Summary:A novel energy-efficient digital-to-analog converter (DAC) switching technique applicable to single-ended successive approximation register (SAR) analog-to-digital converter (ADC) is presented. The proposed DAC switching technique facilitates the ADC to digitize an input signal in the entire amplitude range of [0, Vref] using only a single reference voltage of Vref2. The proposed DAC switching technique achieves 92.3% savings in switching energy as compared to the traditional DAC switching method in single-ended SAR ADCs. The performance of the proposed DAC switching technique and its comparison with previous reported works have been validated through behavioral simulations.
ISSN:1434-8411
DOI:10.1016/j.aeue.2020.153334