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A standard CMOS bridge-based analog interface for differential capacitive sensors
University of l'Aquila, Via Gronchi, L'Aquila, Italy.
University of l'Aquila, Via Gronchi, L'Aquila, Italy.
University of l'Aquila, Via Gronchi, L'Aquila, Italy.
University of l'Aquila, Via Gronchi, L'Aquila, Italy.
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2017 (English)In: PRIME 2017 - 13th Conference on PhD Research in Microelectronics and Electronics, Proceedings, IEEE, 2017, p. 281-284, article id 7974162Conference paper, Published paper (Refereed)
Abstract [en]

This work describes an analog electronic interface, based on a modified De Sauty AC bridge, performing a differential capacitive sensor estimation. A suitable feedback loop tunes a Voltage Controlled Resistor to balance the bridge. The electronic circuit has been designed in a standard integrated CMOS technology (AMS 0.35μm) with a low supply voltage (±1.5 V) and a reduced power consumption (lower than 4mW). PSpice simulation results show a very good agreement with theoretical expectations. The output voltage accuracy shows a 0.03V maximum absolute error for a range of ±50% of sensor variations from its baseline value. Very small baseline values are allowed (tens of μF). 

Place, publisher, year, edition, pages
IEEE, 2017. p. 281-284, article id 7974162
Keywords [en]
analog front-end, Bridge circuits, Capacitive sensors, CMOS technology
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:miun:diva-33337DOI: 10.1109/PRIME.2017.7974162Scopus ID: 2-s2.0-85027552257ISBN: 9781509065073 OAI: oai:DiVA.org:miun-33337DiVA, id: diva2:1192298
Conference
13th Conference on Ph.D. Research in Microelectronics and Electronics, PRIME 2017, Naxos, Italy, 12 June 2017 through 15 June 2017
Available from: 2018-03-22 Created: 2018-03-22 Last updated: 2018-03-22Bibliographically approved

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Sisinni, Emiliano

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CiteExportLink to record
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Citation style
  • apa
  • ieee
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  • vancouver
  • Other style
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  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
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  • asciidoc
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