Error suppression techniques for energy-efficient high-resolution SAR ADCs

• 作者: Jiaxin Liu Linxiao Shen Nan Sun Shaolan Li Wenjuan Guo Xiyuan Tang Zhelu Li
• 来源期刊: 半导体学报（英文版）
• 年，卷（期）: 2020,（11）
• 所属期刊栏目: REVIEWS
• 页码范围: 33-42
• 页数: 10页
• 语种: 英文
• DOI: 10.1088/1674-4926/41/11/111403

摘要

The successive approximation register (SAR) is one of the most energy-efficient analog-to-digital converter (ADC) architecture for medium-resolution applications.However,its high energy efficiency quickly diminishes when the target resolution increases.This is because a SAR ADC suffers from several major error source,including the sampling kT/C noise,the comparator noise,and the DAC mismatch.These errors are increasing hard to address in high-resolution SAR ADCs.This paper reviews recent advances on error suppression techniques for SAR ADCs,including the sampling kT/C noise reduction,the noise-shaping (NS) SAR,and the mismatch error shaping (MES).These techniques aim to boost the resolution of SAR ADCs while maintaining their superior energy efficiency.