A 99.43% Energy Saving Switching Scheme with Asymmetric Binary Search Algorithm for SAR ADCs

被引：0
作者：
Weiyue Qu
Zhaofeng Zhang
Niansong Mei
机构：
[1] University of Chinese Academy of Sciences,School of Microelectronics
[2] Chinese Academy of Sciences,Shanghai Advanced Research Institute
来源：
Circuits, Systems, and Signal Processing | 2020年 / 39卷
关键词：
SAR ADCs; Switching scheme; Asymmetric binary search algorithm; Low-energy;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this paper, a low-energy switching scheme based on the asymmetric binary search algorithm for successive approximation register (SAR) analog-to-digital converters (ADCs) is proposed. To reduce switching energy and area, the proposed scheme uses the single-side switching method and the least significant bit (LSB) capacitor is split into two one-half unit capacitors. Using the series capacitance scheme, the capacitance mismatch caused by process deviation is effectively improved. Compared with the conventional switching method, the switching energy of this scheme is decreased by 99.43% and the area is saved by 87.2%. MATLAB simulation results show that this scheme also has a low nonlinearity that the maximum differential nonlinearity is only 0.37 LSB and the maximum integral nonlinearity is only 0.43 LSB.
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页码：4695 / 4704
页数：9
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