Seyed Sepehr Mirfakhraei, Yves Audet
, Ahmad Hassan et Mohamad Sawan
Article de revue (2021)
 Document en libre accès dans PolyPublie |
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Abstract
A novel galvanic isolated amplifier based on CMOS integrated Hall sensors is presented in this paper. Two serially connected Hall-effect sensors are integrated along with their instrumentation amplifiers using the TSMC 65nm process. A printed-circuit board is employed to validate the proposed isolation amplifier by assembling the chip with chopper modulator, coil driver, miniature coil, variable gain amplifier, and anti-aliasing filter. Because of the miniaturized size of isolation components, this approach can be packaged in chip for industrial applications. This solution replaces the need of bulky/frequency dependent current transformers, complex isolation amplifiers with embedded analog to digital converters, and allows proposed sensors to be used in voltage and current sensing applications. The introduced prototype achieves an input referred offset of 1 mV, 50 dB full-scale signal-to-noise ratio in a 10 kHz bandwidth, and spurious-free dynamic range of 53 dB, while satisfying continuous isolation working voltage of 550 V.
Mots clés
Isolated amplifier; current/voltage sensing; galvanic isolation; chopper amplifier; magnetic coil; CMOS Hall sensor
| Sujet(s): | 2500 Génie électrique et électronique > 2500 Génie électrique et électronique |
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| Département: | Département de génie électrique |
| Centre de recherche: | Polystim - Laboratoire de neurotechnologie |
| Organismes subventionnaires: | CRSNG/NSERC, MITACS, CMC Microsystems |
| URL de PolyPublie: | https://publications.polymtl.ca/48033/ |
| Titre de la revue: | IEEE Transactions on Circuits and Systems I-Regular Papers (vol. 68, no 4) |
| Maison d'édition: | IEEE |
| DOI: | 10.1109/tcsi.2021.3052476 |
| URL officielle: | https://doi.org/10.1109/tcsi.2021.3052476 |
| Date du dépôt: | 18 avr. 2023 15:00 |
| Dernière modification: | 30 sept. 2024 07:31 |
| Citer en APA 7: | Mirfakhraei, S. S., Audet, Y., Hassan, A., & Sawan, M. (2021). A Galvanic Isolated Amplifier Based on CMOS Integrated Hall-Effect Sensors. IEEE Transactions on Circuits and Systems I-Regular Papers, 68(4), 1388-1397. https://doi.org/10.1109/tcsi.2021.3052476 |
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