Next Article in Journal
Spatio-Temporal Constrained Human Trajectory Generation from the PIR Motion Detector Sensor Network Data: A Geometric Algebra Approach
Previous Article in Journal
Characterization of N-Acylhomoserine Lactones Produced by Bacteria Isolated from Industrial Cooling Water Systems
Article Menu

Export Article

Open AccessArticle
Sensors 2016, 16(1), 46; doi:10.3390/s16010046

Low-Power Photoplethysmogram Acquisition Integrated Circuit with Robust Light Interference Compensation

1
Samsung Electronics Inc., Suwon 16678, Korea
2
Chungnam National University, Daejeon 34134, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Vittorio M. N. Passaro
Received: 10 November 2015 / Revised: 19 December 2015 / Accepted: 24 December 2015 / Published: 31 December 2015
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [2611 KB, uploaded 31 December 2015]   |  

Abstract

To overcome light interference, including a large DC offset and ambient light variation, a robust photoplethysmogram (PPG) readout chip is fabricated using a 0.13-μm complementary metal–oxide–semiconductor (CMOS) process. Against the large DC offset, a saturation detection and current feedback circuit is proposed to compensate for an offset current of up to 30 μA. For robustness against optical path variation, an automatic emitted light compensation method is adopted. To prevent ambient light interference, an alternating sampling and charge redistribution technique is also proposed. In the proposed technique, no additional power is consumed, and only three differential switches and one capacitor are required. The PPG readout channel consumes 26.4 μW and has an input referred current noise of 260 pArms. View Full-Text
Keywords: photoplethysmogram; transimpedance amplifier; ambient light cancellation; automatic offset compensation; automatic emitted light compensation photoplethysmogram; transimpedance amplifier; ambient light cancellation; automatic offset compensation; automatic emitted light compensation
Figures

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Kim, J.; Kim, J.; Ko, H. Low-Power Photoplethysmogram Acquisition Integrated Circuit with Robust Light Interference Compensation. Sensors 2016, 16, 46.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top