A 0.65μW 70nV/rtHz capacitively-coupled chopper instrumentation amplifier for bio-potential sensing in 28-nm CMOS

Yuli Jiang; Wenfei Zuo; Jiawei Zheng; Lin Cheng

doi:10.1109/ICTA50426.2020.9332043

A 0.65μW 70nV/rtHz capacitively-coupled chopper instrumentation amplifier for bio-potential sensing in 28-nm CMOS

Yuli Jiang, Wenfei Zuo, Jiawei Zheng, Lin Cheng

Research output: Chapter in Book/Conference Proceeding/Report › Conference Paper published in a book › peer-review

4 Citations (Scopus)

Abstract

A low-power low-noise capacitively-coupled chopper instrumentation amplifier (CCIA) using stacked transconductance amplifiers (OTAs) for bio-potential sensing is presented. It utilizes stacked OTAs as the first stage for noise and power efficiency optimization. A DC servo loop is added to eliminate the DC electrode offset, and pseudo-resistors are designed to realize high-pass filters with ultra-low cut-off frequency without using large capacitors. The CCIA was designed in a 2Snm CMOS process, occupying a chip area of 0.15mm2. It consumes 0.65\muA current under 1-V supply. Simulation results indicate that the input-referred noise is 70nV/rtHz and the noise efficiency factor is 2.7.

Original language	English
Title of host publication	Proceedings of 2020 IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2020
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	47-48
Number of pages	2
ISBN (Electronic)	9781728180328
DOIs	https://doi.org/10.1109/ICTA50426.2020.9332043
Publication status	Published - 23 Nov 2020
Externally published	Yes
Event	3rd IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2020 - Virtual, Nanjing, China Duration: 23 Nov 2020 → 25 Nov 2020

Publication series

Name	Proceedings of 2020 IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2020

Conference

Conference	3rd IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2020
Country/Territory	China
City	Virtual, Nanjing
Period	23/11/20 → 25/11/20

Bibliographical note

Publisher Copyright:
© 2020 IEEE.

Keywords

bio-potential sensing
chopping
DC servo loop(DSL)
instrumentation amplifier(L4)
low power
noise efficiency
pseudo-resistor (PR)
stacking

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10.1109/ICTA50426.2020.9332043

Cite this

Jiang, Y., Zuo, W., Zheng, J., & Cheng, L. (2020). A 0.65μW 70nV/rtHz capacitively-coupled chopper instrumentation amplifier for bio-potential sensing in 28-nm CMOS. In Proceedings of 2020 IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2020 (pp. 47-48). Article 9332043 (Proceedings of 2020 IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2020). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICTA50426.2020.9332043

Jiang, Yuli ; Zuo, Wenfei ; Zheng, Jiawei et al. / A 0.65μW 70nV/rtHz capacitively-coupled chopper instrumentation amplifier for bio-potential sensing in 28-nm CMOS. Proceedings of 2020 IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2020. Institute of Electrical and Electronics Engineers Inc., 2020. pp. 47-48 (Proceedings of 2020 IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2020).

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title = "A 0.65μW 70nV/rtHz capacitively-coupled chopper instrumentation amplifier for bio-potential sensing in 28-nm CMOS",

abstract = "A low-power low-noise capacitively-coupled chopper instrumentation amplifier (CCIA) using stacked transconductance amplifiers (OTAs) for bio-potential sensing is presented. It utilizes stacked OTAs as the first stage for noise and power efficiency optimization. A DC servo loop is added to eliminate the DC electrode offset, and pseudo-resistors are designed to realize high-pass filters with ultra-low cut-off frequency without using large capacitors. The CCIA was designed in a 2Snm CMOS process, occupying a chip area of 0.15mm2. It consumes 0.65\textbackslash{}muA current under 1-V supply. Simulation results indicate that the input-referred noise is 70nV/rtHz and the noise efficiency factor is 2.7.",

keywords = "bio-potential sensing, chopping, DC servo loop(DSL), instrumentation amplifier(L4), low power, noise efficiency, pseudo-resistor (PR), stacking",

author = "Yuli Jiang and Wenfei Zuo and Jiawei Zheng and Lin Cheng",

note = "Publisher Copyright: {\textcopyright} 2020 IEEE.; 3rd IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2020 ; Conference date: 23-11-2020 Through 25-11-2020",

year = "2020",

month = nov,

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doi = "10.1109/ICTA50426.2020.9332043",

language = "English",

series = "Proceedings of 2020 IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2020",

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Jiang, Y, Zuo, W, Zheng, J & Cheng, L 2020, A 0.65μW 70nV/rtHz capacitively-coupled chopper instrumentation amplifier for bio-potential sensing in 28-nm CMOS. in Proceedings of 2020 IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2020., 9332043, Proceedings of 2020 IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2020, Institute of Electrical and Electronics Engineers Inc., pp. 47-48, 3rd IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2020, Virtual, Nanjing, China, 23/11/20. https://doi.org/10.1109/ICTA50426.2020.9332043

A 0.65μW 70nV/rtHz capacitively-coupled chopper instrumentation amplifier for bio-potential sensing in 28-nm CMOS. / Jiang, Yuli; Zuo, Wenfei; Zheng, Jiawei et al.
Proceedings of 2020 IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2020. Institute of Electrical and Electronics Engineers Inc., 2020. p. 47-48 9332043 (Proceedings of 2020 IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2020).

Research output: Chapter in Book/Conference Proceeding/Report › Conference Paper published in a book › peer-review

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AU - Jiang, Yuli

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AU - Zheng, Jiawei

AU - Cheng, Lin

PY - 2020/11/23

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N2 - A low-power low-noise capacitively-coupled chopper instrumentation amplifier (CCIA) using stacked transconductance amplifiers (OTAs) for bio-potential sensing is presented. It utilizes stacked OTAs as the first stage for noise and power efficiency optimization. A DC servo loop is added to eliminate the DC electrode offset, and pseudo-resistors are designed to realize high-pass filters with ultra-low cut-off frequency without using large capacitors. The CCIA was designed in a 2Snm CMOS process, occupying a chip area of 0.15mm2. It consumes 0.65\muA current under 1-V supply. Simulation results indicate that the input-referred noise is 70nV/rtHz and the noise efficiency factor is 2.7.

AB - A low-power low-noise capacitively-coupled chopper instrumentation amplifier (CCIA) using stacked transconductance amplifiers (OTAs) for bio-potential sensing is presented. It utilizes stacked OTAs as the first stage for noise and power efficiency optimization. A DC servo loop is added to eliminate the DC electrode offset, and pseudo-resistors are designed to realize high-pass filters with ultra-low cut-off frequency without using large capacitors. The CCIA was designed in a 2Snm CMOS process, occupying a chip area of 0.15mm2. It consumes 0.65\muA current under 1-V supply. Simulation results indicate that the input-referred noise is 70nV/rtHz and the noise efficiency factor is 2.7.

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KW - DC servo loop(DSL)

KW - instrumentation amplifier(L4)

KW - low power

KW - noise efficiency

KW - pseudo-resistor (PR)

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BT - Proceedings of 2020 IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2020

PB - Institute of Electrical and Electronics Engineers Inc.

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ER -

Jiang Y, Zuo W, Zheng J, Cheng L. A 0.65μW 70nV/rtHz capacitively-coupled chopper instrumentation amplifier for bio-potential sensing in 28-nm CMOS. In Proceedings of 2020 IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2020. Institute of Electrical and Electronics Engineers Inc. 2020. p. 47-48. 9332043. (Proceedings of 2020 IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2020). doi: 10.1109/ICTA50426.2020.9332043

A 0.65μW 70nV/rtHz capacitively-coupled chopper instrumentation amplifier for bio-potential sensing in 28-nm CMOS

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Keywords

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