Li, J;
Wu, Y;
Bayford, R;
Jiang, D;
Demosthenous, A;
(2022)
A Low Power, Low THD Current Driver with Discrete Common-Mode Feedback for EIT Applications.
In:
Proceedings of the 29th IEEE International Conference on Electronics, Circuits and Systems (ICECS) 2022.
(pp. pp. 1-4).
Institute of Electrical and Electronics Engineers (IEEE)
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Abstract
A low THD sinusoidal current driver for electrical impedance tomography (EIT) applications is proposed and analyzed in this paper. A discrete common-mode feedback method is proposed to increase the accuracy of the output current amplitude and output impedance. The current driver is designed in 65 nm technology under 3.3 V supply with a chip area of 0.0843 mm2. The maximum output current amplitude is 1.2 mA. In simulations the current driver achieves an average THD of 0.098% at 1 mA output current amplitude and 500 kHz output current frequency. The simulated output impedance is higher than 4 MΩ at a load impedance lower than 3.5 kΩ. The current consumption of the circuit is 1.47 mA and provides a current efficiency of 81.6%.
| Type: | Proceedings paper |
|---|---|
| Title: | A Low Power, Low THD Current Driver with Discrete Common-Mode Feedback for EIT Applications |
| Event: | ICECS 2022 - 29th IEEE International Conference on Electronics, Circuits and Systems |
| Location: | Glasgow, Scotland |
| Dates: | 24th-26th October 2022 |
| ISBN-13: | 9781665488235 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/ICECS202256217.2022.9971123 |
| Publisher version: | https://doi.org/10.1109/ICECS202256217.2022.997112... |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions. |
| 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/10164296 |
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