A Review of Improved CMOS Dynamic Comparators

This paper reviews some CMOS dynamic comparators that achieving high performances on different features. Based on conventional structures, a comparator with a dynamic floating inverter amplifier optimize their circuit by a floating reservoir capacitor, which achieves the best energy efficiency while...

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Bibliographic Details
Published in2022 IEEE International Conference on Electrical Engineering, Big Data and Algorithms (EEBDA) pp. 734 - 741
Main Authors Li, Zhuoling, Ma, Yuan, Xie, Zan
Format Conference Proceeding
LanguageEnglish
Published IEEE 25.02.2022
Subjects
Capacitors
CMOS dynamic comparators
delay
energy
Energy efficiency
Heuristic algorithms
Reservoirs
review
Sensitivity
Tail
Voltage
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Summary:This paper reviews some CMOS dynamic comparators that achieving high performances on different features. Based on conventional structures, a comparator with a dynamic floating inverter amplifier optimize their circuit by a floating reservoir capacitor, which achieves the best energy efficiency while is insensitive to common-mode voltage. The optimization of the Elzakker's comparators increases the pre-amplifier stage's structures by adding a tail capacitor and a tail transistor. And three-stage comparator with extra parallel feedback is discussed, decreasing delay significantly. The classic comparator comprises a differential input stage, two regenerative flip-flops, and an S-R latch is also mentioned.
DOI:10.1109/EEBDA53927.2022.9745016