A Single-Ended SAR ADC With Fully Differential DAC Switching Scheme for IoT Applications

• Published in: IEEE transactions on circuits and systems. II, Express briefs Vol. 71; no. 11; pp. 4713 - 4717
• Main Authors: Du, Kaixuan, Liu, Maoqiang, Wang, Zhixuan, Li, Heyi, Bao, Yuanxin, Shen, Linxiao, Ye, Le
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.11.2024; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Analog-to-digital converter (ADC); Capacitors; common-mode voltage; Complexity theory; Digital to analog converters; Electric potential; Figure of merit; Power demand; Sampling; single-ended; successive approximation register (SAR); Switches; Switching circuits; switching scheme; Timing; Voltage

This brief introduces a single-ended SAR ADC with a novel fully differential DAC switching scheme. This scheme achieves fully differential switching by smartly sampling the single-ended input and pre-switching before the conversion phase, maintaining a constant DAC output common-mode voltage during...