Energy‐efficient high‐accuracy switching method for SAR ADCs | Zendy

Rahimi E. | Zendy; Yavari M. | Zendy

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Energy‐efficient high‐accuracy switching method for SAR ADCs

Author(s) -

Rahimi E.,

Yavari M.

Publication year - 2014

Publication title -

electronics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.375

H-Index - 146

eISSN - 1350-911X

pISSN - 0013-5194

DOI - 10.1049/el.2013.3451

Subject(s) - energy (signal processing) , electronic engineering , computer science , successive approximation adc , materials science , electrical engineering , engineering , physics , voltage , capacitor , quantum mechanics

A new tri‐level switching method for successive approximation register (SAR) analogue‐to‐digital converters (ADCs) is presented. The proposed switching method enhances the efficiency of digital‐to‐analogue converter switching energy by 93.7% and achieves a 75% reduction in the total capacitor size, compared with the conventional SAR ADC. In addition, the accuracy of the proposed SAR ADC has no dependency on the accuracy of the mid‐level reference voltage ( V cm ) except in the least significant bit, and the common‐mode voltage at the input of the comparator will remain approximately unchanged. Analytical calculations and behavioural simulation results are provided to demonstrate the effectiveness of the proposed switching scheme.

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