Switch-back based on charge equalization switching technique for SAR ADC

IEICE Electronics Express

Weiru Gu¹  Fan Ye¹  Junyan Ren¹ 

[1] State Key Laboratory of ASIC and System, Fudan University

关键词: analog-to-digital converter;    charge equalization;    common mode voltage;    switch-back;    successive-approximation-register;   

DOI  :  10.1587/elex.12.20150036

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(4)A switch-back based on charge equalization switching technique for successive-approximation-register (SAR) analog-to-digital converters (ADCs) is proposed. With the proposed switching technique the average switching energy is reduced by 96.86% as compared with the conventional method. This switching scheme can also reduce the total capacitance about 75% with the comparison of the conventional architecture. With the proposed switching scheme the common mode voltage shifts only by 1LSB during all conversion steps, so the dynamic offset of comparator becomes negligible in this case.

【 授权许可】

Unknown