Analysis and comparison of optimization method for comparator design

Zhipeng Fan; Zeheng Yang; Fei Zhang

doi:10.1117/12.2652768

10 November 2022 Analysis and comparison of optimization method for comparator design

Zhipeng Fan, Zeheng Yang, Fei Zhang

Proceedings Volume 12331, International Conference on Mechanisms and Robotics (ICMAR 2022); 123311Y (2022) https://doi.org/10.1117/12.2652768
Event: International Conference on Mechanisms and Robotics (ICMAR 2022), 2022, Zhuhai, China

Abstract

The comparator is essential in analog-to-digital converters (ADC). This paper analyzes different improvements in the designs of comparators. In order to improve the energy efficiency, the dynamic bias comparator was developed, and it also reduces the input-referred noise. A floating reservoir design was then adopted to solve some weaknesses of the dynamic bias comparator and further increases energy efficiency. On-chip inductors and charge pumps were also implemented to perfect the performance of the comparator. These two changes improve delay performance, and the first one reduces power consumption simultaneously. The last update was an energy-efficient ring oscillator collapse-based comparator. It adjusts the performance of the comparator without any external control and then makes the energy consumption achieve a minimum value without energy scaling. At the same time, this comparator has a wider resolution tuning capability.

Citation Download Citation

Zhipeng Fan, Zeheng Yang, and Fei Zhang "Analysis and comparison of optimization method for comparator design", Proc. SPIE 12331, International Conference on Mechanisms and Robotics (ICMAR 2022), 123311Y (10 November 2022); https://doi.org/10.1117/12.2652768

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KEYWORDS

Capacitors

Energy efficiency

Transistors

Capacitance

Signal to noise ratio

Amplifiers

Oscillators

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