Variable resolution SAR ADC architecture with 99.6% reduction in switching energy over conventional scheme

IEICE Electronics Express

Zhangming Zhu¹  Yutao Wang¹  Jiaojiao Yao¹  Yintang Yang¹ 

[1] School of Microelectronics, Xidian University

关键词: SAR ADC;    switching scheme;    EMCS;    monotonic;    energy efficiency;   

DOI  :  10.1587/elex.12.20150099

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(6)A novel energy-efficient switching method for variable resolution successive approximation register (SAR) analogue-to-digital converters (ADCs) is presented. The proposed switching scheme achieves switching energy inspired by the early reset merged capacitor switching algorithm (EMCS) and monotonic capacitor switching procedure. Besides, the dummy capacitors are used to further reduce power consumption and area. When sized for the same static linearity as the conventional SAR ADC, the proposed method enhances the efficiency of switching energy by 99.6% and reduces the total area by 93.75%. Furthermore, the proposed scheme can achieve a variable resolution for SAR ADCs.

【 授权许可】

Unknown