Optimization methods of comparators design

Hanliang Chen; Shaojuan Feng; Yian Ge; Yingxiu Yao

doi:10.1117/12.2652779

10 November 2022 Optimization methods of comparators design

Hanliang Chen, Shaojuan Feng, Yian Ge, Yingxiu Yao

Proceedings Volume 12331, International Conference on Mechanisms and Robotics (ICMAR 2022); 1233122 (2022) https://doi.org/10.1117/12.2652779
Event: International Conference on Mechanisms and Robotics (ICMAR 2022), 2022, Zhuhai, China

Abstract

This paper introduces four different designs of the comparator in recent years. The edge-pursuit comparator (EPC), which is a new energy-efficient ring oscillator collapse-based comparator, can automatically scale comparison energy according to its input difference and eliminating unnecessary energy. To reduce the energy consumption, the pre-amplifier output node of a dynamic bias comparator (DBC) partially discharge by adding a tail capacitor. The novel two-stage dynamic comparator with a transconductance-enhanced latching stage efficiently decreases the delay and energy consumption. Furthermore, an improvement of the traditional comparator for precise application is introduced. The new comparator applies PMOS transistors at the input of the preamplifier and the latch stage, and both are controlled by a special clock generator which lets the new comparator achieve optimum delay and with no excess power consumption. This paper describes each comparator in detail and compares different features of them.

Citation Download Citation

Hanliang Chen, Shaojuan Feng, Yian Ge, and Yingxiu Yao "Optimization methods of comparators design", Proc. SPIE 12331, International Conference on Mechanisms and Robotics (ICMAR 2022), 1233122 (10 November 2022); https://doi.org/10.1117/12.2652779

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