An Energy-Efficient Low Frequency-Dependence Switching Technique for SAR ADCs

Author

Sanyal, Amit ; Nan Sun

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Texas at Austin, Austin, TX, USA

Volume

61

Issue

5

fYear

2014

fDate

May-14

Firstpage

294

Lastpage

298

Abstract

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.

Keywords

analogue-digital conversion; low-power electronics; switching circuits; SAR ADC; SAR analog-to-digital converters; SPICE simulations; energy-efficient switching scheme; low frequency-dependence switching technique; successive approximation register ADC; switching energy; CMOS integrated circuits; Capacitance; Capacitors; Logic gates; Noise; Solid state circuits; Switches; Analog-to-digital converter (ADC); digital-to-analog converter (DAC); successive approximation register (SAR); switching energy;

fLanguage

English

Journal_Title

Circuits and Systems II: Express Briefs, IEEE Transactions on

Publisher

ieee

ISSN

1549-7747

Type

jour

DOI

10.1109/TCSII.2014.2304890

Filename

6750043