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

被引：0
|
作者：
Wang, Hao [1 ]
Zhu, Zhangming [1 ]
机构：
[1] Xidian Univ, Sch Microelect, Xian, Peoples R China
来源：
IEICE ELECTRONICS EXPRESS | 2015年 / 12卷 / 04期
基金：
中国国家自然科学基金;
关键词：
SAR ADC; DAC; switching scheme; multi-reference; energy-efficient; area-efficient;
D O I：
10.1587/elex.12.20141182
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A novel multi-reference capacitor switching scheme for ultralow power successive approximation register (SAR) ADCs is proposed. By using 5 references, the proposed switching scheme only dissipates 10.6 CVREF2 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.
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页数：5
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