Neshatvar, N;
Langlois, P;
Demosthenous, A;
(2016)
An Improved Wideband CMOS Current Driver for Bioimpedance Applications.
In:
2016 IEEE International Symposium on Circuits and Systems (ISCAS).
(pp. pp. 2447-2450).
IEEE
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Abstract
A wideband, CMOS current driver for bioimpedance measurement applications has been designed employing nonlinear feedback. With the introduction of phase compensation, the circuit is able to operate at frequencies higher than the pole frequency of the output transconductor with minimum phase delay. Moreover, it isolates the poles required for stability from the high frequency characteristics of the output transconductor. The circuit has been simulated in a 0.35-μm CMOS technology and operates from ±2.5 V power supplies. Simulations show that for a 1 mAp-p output current, the phase delay is less than 1° for frequencies up to 3 MHz, rising to 1.5° at 5 MHz. Dual frequency currents to the load are demonstrated.
| Type: | Proceedings paper |
|---|---|
| Title: | An Improved Wideband CMOS Current Driver for Bioimpedance Applications |
| Event: | 2016 IEEE International Symposium on Circuits and Systems (ISCAS) |
| Location: | Montreal, Canada |
| Dates: | 22 May 2016 - 25 May 2016 |
| ISBN: | 97814799-53417 |
| ISBN-13: | 97814799-53424 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/ISCAS.2016.7539087 |
| Publisher version: | http://doi.org/10.1109/ISCAS.2016.7539087 |
| Language: | English |
| Additional information: | © 2016 IEEE. This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Technology, Engineering, Electrical & Electronic, Engineering |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices 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/1537699 |
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