Pre-charge solution for low-power, area-efficient SAR ADC

IEICE Electronics Express

Sahar Sarafi³  Javad Abbaszadeh Bargoshadi¹  Abu Khari Bin Aain³  Amin Chegini² 

[1] Department of Electrical Engineering, Islamic Azad University of Urmia;Department of Electronic Engineering, Urmia University of Urmia;Faculty of Electrical Engineering, Universiti Teknologi Malaysia

关键词: SAR ADC;    switching algorithm;   

DOI  :  10.1587/elex.12.20150546

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(7)In this paper, a new method is proposed to reduce the power consumption and occupied area of successive-approximation register analog to digital converters (SAR ADCs). The proposed solution is based on pre-charged capacitor array consisting of identical unit capacitors. According to the new method, switching operations to determine the least significant bits are replaced by adding pre-charged capacitors to the main capacitor array. This method is applicable for binary-weighted capacitor arrays with different switching schemes. With the presented method, switching energy and the number of unit capacitors are reduced by at least 50%.

【 授权许可】

Unknown