Ya, W;
Demosthenous, A;
Donaldson, N;
Liu, X;
(2018)
A capacitance-to-digits readout circuit for integrated humidity sensors for monitoring the in-package humidity of ultra-small medical implants.
In:
2018 IEEE International Symposium on Circuits and Systems (ISCAS).
IEEE
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Abstract
There remains a need for satisfactory integrated sensors that can monitor humidity inside small active implanted devices in which delicate electronics are operating. This paper describes a simple capacitance-to-digits readout circuit for a capacitive humidity sensor for ultra-small medical implants. The proposed readout circuit provides a larger dynamic range than conventional capacitance readout circuits by removing the parasitic capacitance from the measured capacitive input. The circuit was designed in XFAB's 0.6-μm CMOS technology and provides 1 % resolution in measuring relative humidity.
| Type: | Proceedings paper |
|---|---|
| Title: | A capacitance-to-digits readout circuit for integrated humidity sensors for monitoring the in-package humidity of ultra-small medical implants |
| Event: | IEEE International Symposium on Circuits and Systems (ISCAS), 27-30 May 2018, Florence, Italy |
| Location: | Florence, Italy |
| ISBN-13: | 978-1-5386-4881-0 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/ISCAS.2018.8351269 |
| 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. |
| Keywords: | Capacitance-to-digits readout circuit, capacitanceto-time converter, hermeticity, humidity sensor, implant package |
| 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 UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10058963 |
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