Energy-efficient and area-efficient switching scheme based on multi-reference for SAR ADC

IEICE Electronics Express

Zhangming Zhu¹  Hao Wang¹ 

[1] School of Microelectronics, Xidian University

关键词: SAR ADC;    DAC;    switching scheme;    multi-reference;    energy-efficient;    area-efficient;   

DOI  :  10.1587/elex.12.20141182

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(6)Cited-By(2)A novel multi-reference capacitor switching scheme for ultra-low power successive approximation register (SAR) ADCs is proposed. By using 5 references, the proposed switching scheme only dissipates 10.6 CV2REF average energy and requires 256 unit capacitors, which are reduced by 99.2% and 87.5%, compared to the conventional structure. Besides, the common-mode voltage of the comparator input is approximately constant, which relaxes the required comparator’s performance. Behavioral simulation results demonstrate the superiority of the proposed switching scheme.

【 授权许可】

Unknown