Edge pursuit comparator with application in a 74.1dB SNDR, 20KS/s 15b SAR ADC

Minseob Shim; Seokhyeon Jeong; Paul Myers; Suyoung Bang; Junhua Shen; Chulwoo Kim; Dennis Sylvester; David Blaauw; Wanyeong Jung

doi:10.1109/ASPDAC.2018.8297327

Edge pursuit comparator with application in a 74.1dB SNDR, 20KS/s 15b SAR ADC

Minseob Shim, Seokhyeon Jeong, Paul Myers, Suyoung Bang, Junhua Shen, Chulwoo Kim, Dennis Sylvester, David Blaauw, Wanyeong Jung

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

This paper presents a new energy-efficient ring oscillator collapse-based comparator, which is called edge-pursuit comparator (EPC) and demonstrated it in a 15-bit SAR ADC. The comparator automatically adjusts the performance according to its input difference without any control, eliminating unnecessary energy spent on coarse comparisons. The employed SAR ADC supplements a 10-bit differential main CDAC with a 5-bit common-mode CDAC which uses common to differential gain tuning to improves linearity by reducing the effect of switch parasitic capacitance. A test chip fabricated in 40nm CMOS shows 74.12 dB SNDR and 173.4 dB FOMs. The comparator consumes 104 nW with the full ADC consuming 1.17 μW.

Original language	English
Title of host publication	ASP-DAC 2018 - 23rd Asia and South Pacific Design Automation Conference, Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	295-296
Number of pages	2
ISBN (Electronic)	9781509006021
DOIs	https://doi.org/10.1109/ASPDAC.2018.8297327
Publication status	Published - 2018 Feb 20
Event	23rd Asia and South Pacific Design Automation Conference, ASP-DAC 2018 - Jeju, Korea, Republic of Duration: 2018 Jan 22 → 2018 Jan 25

Publication series

Name	Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC
Volume	2018-January

Other

Other	23rd Asia and South Pacific Design Automation Conference, ASP-DAC 2018
Country/Territory	Korea, Republic of
City	Jeju
Period	18/1/22 → 18/1/25

Bibliographical note

Funding Information:
The authors thank TSMC University Shuttle Program for chip fabrication and Analog Devices for partial financial support.

Publisher Copyright:
© 2018 IEEE.

ASJC Scopus subject areas

Electrical and Electronic Engineering
Computer Science Applications
Computer Graphics and Computer-Aided Design

Access to Document

10.1109/ASPDAC.2018.8297327

Cite this

Shim, M., Jeong, S., Myers, P., Bang, S., Shen, J., Kim, C., Sylvester, D., Blaauw, D., & Jung, W. (2018). Edge pursuit comparator with application in a 74.1dB SNDR, 20KS/s 15b SAR ADC. In ASP-DAC 2018 - 23rd Asia and South Pacific Design Automation Conference, Proceedings (pp. 295-296). (Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC; Vol. 2018-January). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ASPDAC.2018.8297327

Edge pursuit comparator with application in a 74.1dB SNDR, 20KS/s 15b SAR ADC. / Shim, Minseob; Jeong, Seokhyeon; Myers, Paul et al.
ASP-DAC 2018 - 23rd Asia and South Pacific Design Automation Conference, Proceedings. Institute of Electrical and Electronics Engineers Inc., 2018. p. 295-296 (Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC; Vol. 2018-January).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Shim, M, Jeong, S, Myers, P, Bang, S, Shen, J, Kim, C, Sylvester, D, Blaauw, D & Jung, W 2018, Edge pursuit comparator with application in a 74.1dB SNDR, 20KS/s 15b SAR ADC. in ASP-DAC 2018 - 23rd Asia and South Pacific Design Automation Conference, Proceedings. Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC, vol. 2018-January, Institute of Electrical and Electronics Engineers Inc., pp. 295-296, 23rd Asia and South Pacific Design Automation Conference, ASP-DAC 2018, Jeju, Korea, Republic of, 18/1/22. https://doi.org/10.1109/ASPDAC.2018.8297327

Shim M, Jeong S, Myers P, Bang S, Shen J, Kim C et al. Edge pursuit comparator with application in a 74.1dB SNDR, 20KS/s 15b SAR ADC. In ASP-DAC 2018 - 23rd Asia and South Pacific Design Automation Conference, Proceedings. Institute of Electrical and Electronics Engineers Inc. 2018. p. 295-296. (Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC). doi: 10.1109/ASPDAC.2018.8297327

Shim, Minseob ; Jeong, Seokhyeon ; Myers, Paul et al. / Edge pursuit comparator with application in a 74.1dB SNDR, 20KS/s 15b SAR ADC. ASP-DAC 2018 - 23rd Asia and South Pacific Design Automation Conference, Proceedings. Institute of Electrical and Electronics Engineers Inc., 2018. pp. 295-296 (Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC).

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abstract = "This paper presents a new energy-efficient ring oscillator collapse-based comparator, which is called edge-pursuit comparator (EPC) and demonstrated it in a 15-bit SAR ADC. The comparator automatically adjusts the performance according to its input difference without any control, eliminating unnecessary energy spent on coarse comparisons. The employed SAR ADC supplements a 10-bit differential main CDAC with a 5-bit common-mode CDAC which uses common to differential gain tuning to improves linearity by reducing the effect of switch parasitic capacitance. A test chip fabricated in 40nm CMOS shows 74.12 dB SNDR and 173.4 dB FOMs. The comparator consumes 104 nW with the full ADC consuming 1.17 μW.",

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Edge pursuit comparator with application in a 74.1dB SNDR, 20KS/s 15b SAR ADC

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ASJC Scopus subject areas

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