Ambient light cancellation in photoplethysmogram application using alternating sampling and charge redistribution technique

Jongpal Kim; Takhyung Lee; Jihoon Kim; Hyoungho Ko

doi:10.1109/EMBC.2015.7319867

Ambient light cancellation in photoplethysmogram application using alternating sampling and charge redistribution technique

Jongpal Kim, Takhyung Lee, Jihoon Kim, Hyoungho Ko

Electronic and Electrical Engineering

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

13 Scopus citations

Abstract

To overcome a large DC offset, ambient light interference, and optical path variation, a robust PPG readout chip is fabricated using 0.13-μm CMOS process. Against the large DC offset, a saturation detection and current feedback method can compensate a current of up to 30 μA. To be robust against optical path variation, an automatic emitting light compensation method is adopted. To remove the ambient light interference, we propose an alternating sampling and charge redistribution technique, in which no additional power is consumed, and only three differential switches and one capacitor are required. The PPG readout channel consumes 26 μW and has a input referred current noise of 260 pArms.

Original language	English
Title of host publication	2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	6441-6444
Number of pages	4
ISBN (Electronic)	9781424492718
DOIs	https://doi.org/10.1109/EMBC.2015.7319867
State	Published - 4 Nov 2015
Event	37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2015 - Milan, Italy Duration: 25 Aug 2015 → 29 Aug 2015

Publication series

Name	Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS
Volume	2015-November
ISSN (Print)	1557-170X

Conference

Conference	37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2015
Country/Territory	Italy
City	Milan
Period	25/08/15 → 29/08/15

Bibliographical note

Publisher Copyright:
© 2015 IEEE.

Access to Document

10.1109/EMBC.2015.7319867

Cite this

Kim, J., Lee, T., Kim, J., & Ko, H. (2015). Ambient light cancellation in photoplethysmogram application using alternating sampling and charge redistribution technique. In 2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2015 (pp. 6441-6444). Article 7319867 (Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS; Vol. 2015-November). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/EMBC.2015.7319867

Kim, Jongpal ; Lee, Takhyung ; Kim, Jihoon et al. / Ambient light cancellation in photoplethysmogram application using alternating sampling and charge redistribution technique. 2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2015. Institute of Electrical and Electronics Engineers Inc., 2015. pp. 6441-6444 (Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS).

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title = "Ambient light cancellation in photoplethysmogram application using alternating sampling and charge redistribution technique",

abstract = "To overcome a large DC offset, ambient light interference, and optical path variation, a robust PPG readout chip is fabricated using 0.13-μm CMOS process. Against the large DC offset, a saturation detection and current feedback method can compensate a current of up to 30 μA. To be robust against optical path variation, an automatic emitting light compensation method is adopted. To remove the ambient light interference, we propose an alternating sampling and charge redistribution technique, in which no additional power is consumed, and only three differential switches and one capacitor are required. The PPG readout channel consumes 26 μW and has a input referred current noise of 260 pArms.",

author = "Jongpal Kim and Takhyung Lee and Jihoon Kim and Hyoungho Ko",

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Kim, J, Lee, T, Kim, J & Ko, H 2015, Ambient light cancellation in photoplethysmogram application using alternating sampling and charge redistribution technique. in 2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2015., 7319867, Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS, vol. 2015-November, Institute of Electrical and Electronics Engineers Inc., pp. 6441-6444, 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2015, Milan, Italy, 25/08/15. https://doi.org/10.1109/EMBC.2015.7319867

Ambient light cancellation in photoplethysmogram application using alternating sampling and charge redistribution technique. / Kim, Jongpal; Lee, Takhyung; Kim, Jihoon et al.
2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2015. Institute of Electrical and Electronics Engineers Inc., 2015. p. 6441-6444 7319867 (Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS; Vol. 2015-November).

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

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PY - 2015/11/4

Y1 - 2015/11/4

N2 - To overcome a large DC offset, ambient light interference, and optical path variation, a robust PPG readout chip is fabricated using 0.13-μm CMOS process. Against the large DC offset, a saturation detection and current feedback method can compensate a current of up to 30 μA. To be robust against optical path variation, an automatic emitting light compensation method is adopted. To remove the ambient light interference, we propose an alternating sampling and charge redistribution technique, in which no additional power is consumed, and only three differential switches and one capacitor are required. The PPG readout channel consumes 26 μW and has a input referred current noise of 260 pArms.

AB - To overcome a large DC offset, ambient light interference, and optical path variation, a robust PPG readout chip is fabricated using 0.13-μm CMOS process. Against the large DC offset, a saturation detection and current feedback method can compensate a current of up to 30 μA. To be robust against optical path variation, an automatic emitting light compensation method is adopted. To remove the ambient light interference, we propose an alternating sampling and charge redistribution technique, in which no additional power is consumed, and only three differential switches and one capacitor are required. The PPG readout channel consumes 26 μW and has a input referred current noise of 260 pArms.

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Kim J, Lee T, Kim J, Ko H. Ambient light cancellation in photoplethysmogram application using alternating sampling and charge redistribution technique. In 2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2015. Institute of Electrical and Electronics Engineers Inc. 2015. p. 6441-6444. 7319867. (Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS). doi: 10.1109/EMBC.2015.7319867

Ambient light cancellation in photoplethysmogram application using alternating sampling and charge redistribution technique

Abstract

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