Body Biasing Techniques for Dynamic Comparators: A Systematic Survey

Spinogatti, Valerio; Della Sala, Riccardo; Bocciarelli, Cristian; Centurelli, Francesco; Trifiletti, Alessandro

doi:10.3390/electronics13040711

Open AccessArticle

Body Biasing Techniques for Dynamic Comparators: A Systematic Survey

by

Valerio Spinogatti

,

Riccardo Della Sala

^*

,

Cristian Bocciarelli

,

Francesco Centurelli

and

Alessandro Trifiletti

Department of Information Engineering, Electronics and Telecommunications (DIET), Sapienza University of Rome, 00184 Rome, Italy

^*

Author to whom correspondence should be addressed.

Electronics 2024, 13(4), 711; https://doi.org/10.3390/electronics13040711

Submission received: 21 December 2023 / Revised: 4 February 2024 / Accepted: 7 February 2024 / Published: 9 February 2024

(This article belongs to the Special Issue Feature Papers in Circuit and Signal Processing)

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Abstract

Forward body biasing (FBB) has often been exploited in the literature for improving the performance of both analog and digital building blocks. Recent works have explored the application of FBB variants to mixed-signal electronics and in particular to dynamic comparators, where these techniques can help to relax the trade-off between speed and power consumption at medium and low supply voltages. However, the literature lacks a structured analysis of the solutions that have been developed and of the trade-offs that affect them. This work attempts to fill the gap by providing a survey of the application of FBB techniques to dynamic comparators. The analysis focuses on the two most popular dynamic comparator topologies, the Strong Arm latch and Elzakker’s comparator. Several FBB variants are examined from a theoretical point of view. Moreover, the benefits and the limitations of the different approaches are assessed in terms of the main figures of merit through a systematic campaign of simulations in a 55 nm CMOS technology.

Keywords: comparators; forward body bias; high speed; latch; IoT

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MDPI and ACS Style

Spinogatti, V.; Della Sala, R.; Bocciarelli, C.; Centurelli, F.; Trifiletti, A. Body Biasing Techniques for Dynamic Comparators: A Systematic Survey. Electronics 2024, 13, 711. https://doi.org/10.3390/electronics13040711

AMA Style

Spinogatti V, Della Sala R, Bocciarelli C, Centurelli F, Trifiletti A. Body Biasing Techniques for Dynamic Comparators: A Systematic Survey. Electronics. 2024; 13(4):711. https://doi.org/10.3390/electronics13040711

Chicago/Turabian Style

Spinogatti, Valerio, Riccardo Della Sala, Cristian Bocciarelli, Francesco Centurelli, and Alessandro Trifiletti. 2024. "Body Biasing Techniques for Dynamic Comparators: A Systematic Survey" Electronics 13, no. 4: 711. https://doi.org/10.3390/electronics13040711

APA Style

Spinogatti, V., Della Sala, R., Bocciarelli, C., Centurelli, F., & Trifiletti, A. (2024). Body Biasing Techniques for Dynamic Comparators: A Systematic Survey. Electronics, 13(4), 711. https://doi.org/10.3390/electronics13040711

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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Body Biasing Techniques for Dynamic Comparators: A Systematic Survey

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