Energy-efficient hybrid capacitor switching scheme for SAR ADC

A novel low-energy hybrid capacitor switching scheme for a low-power successive approximation register (SAR) analogue-to-digital converter (ADC) is presented. The proposed switching scheme combines a new switch method and the monotonic technique. The new switch method can achieve no switching energy...

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Bibliographic Details
Published inElectronics letters Vol. 50; no. 1; pp. 22 - 23
Main Authors Xie, Liangbo, Wen, Guangjun, Liu, Jiaxin, Wang, Yao
Format Journal Article
LanguageEnglish
Published Stevenage The Institution of Engineering and Technology 02.01.2014
Institution of Engineering and Technology
John Wiley & Sons, Inc
Subjects
analogue‐digital conversion
Applied sciences
Approximation
average switching energy
capacitor switching
Circuit properties
Circuits and systems
Electric, optical and optoelectronic circuits
Electronic circuits
Electronics
energy saving
Exact sciences and technology
low energy‐efficient hybrid capacitor switching scheme
low‐energy monotonic procedure
low‐power successive approximation register analogue‐to‐digital converter
SAR ADC
Signal convertors
low-energy monotonic procedure
low energy-efficient hybrid capacitor switching scheme
SAR ADC
analogue-digital conversion
capacitor switching
energy saving
low-power successive approximation register analogue-to-digital converter
average switching energy
Waveform
Energy consumption
AD conversion
Selector switch
Capacitor
Multilevel system
Switching
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Summary:A novel low-energy hybrid capacitor switching scheme for a low-power successive approximation register (SAR) analogue-to-digital converter (ADC) is presented. The proposed switching scheme combines a new switch method and the monotonic technique. The new switch method can achieve no switching energy consumption in the first three comparison cycles. Furthermore, a low-energy monotonic procedure is performed for the rest of the comparisons. The average switching energy is reduced by 98.83% compared with the conventional architecture, resulting in the most energy-efficient switching scheme among the existing switching techniques. Besides the significant energy saving, the proposed switching scheme also achieves a 75% reduction of the capacitors over the conventional scheme.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0013-5194
1350-911X
1350-911X
DOI:10.1049/el.2013.2794