Kassanos, P;
Constantinou, L;
Triantis, IF;
Demosthenous, A;
(2014)
An Integrated Analog Readout for Multi-Frequency Bioimpedance Measurements.
IEEE SENSORS JOURNAL
, 14
(8)
10.1109/JSEN.2014.2315963.
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Abstract
Bioimpedance spectroscopy is used in a wide range of biomedical applications. This paper presents an integrated analog readout, which employs synchronous detection to perform galvanostatic multi-channel, multi-frequency bioimpedance measurements. The circuit was fabricated in a 0.35-μm CMOS technology and occupies an area of 1.52 mm2. The effect of random dc offsets is investigated, along with the use of chopping to minimize them. Impedance measurements of a known RC load and skin (using commercially available electrodes) demonstrate the operation of the system over a frequency range up to 1 MHz. The circuit operates from a ±2.5 V power supply and has a power consumption of 3.4-mW per channel.
| Type: | Article |
|---|---|
| Title: | An Integrated Analog Readout for Multi-Frequency Bioimpedance Measurements |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/JSEN.2014.2315963 |
| Publisher version: | http://dx.doi.org/10.1109/JSEN.2014.2315963 |
| Additional information: | © 2014 IEEE. This work is licensed under a Creative Commons Attribution 3.0 License. For more information, see http://creativecommons.org/licenses/by/3.0/ |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1447814 |
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