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A standard CMOS bri...
A standard CMOS bridge-based analog interface for differential capacitive sensors
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- Barile, Gianluca (author)
- University of l'Aquila, Via Gronchi, L'Aquila, Italy
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- Ferri, Giuseppe (author)
- University of l'Aquila, Via Gronchi, L'Aquila, Italy
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- Parente, Francesca Romana (author)
- University of l'Aquila, Via Gronchi, L'Aquila, Italy
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- Stornelli, Vincenzo (author)
- University of l'Aquila, Via Gronchi, L'Aquila, Italy
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- Depari, Alessandro (author)
- University of l'Aquila, Via Gronchi, L'Aquila, Italy
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- Flammini, Alessandra (author)
- University of Brescia, Brescia, Italy
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- Sisinni, Emiliano (author)
- University of Brescia, Brescia, Italy
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(creator_code:org_t)
- IEEE, 2017
- 2017
- English.
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In: PRIME 2017 - 13th Conference on PhD Research in Microelectronics and Electronics, Proceedings. - : IEEE. - 9781509065073 ; , s. 281-284
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- 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).
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Keyword
- analog front-end
- Bridge circuits
- Capacitive sensors
- CMOS technology
Publication and Content Type
- ref (subject category)
- kon (subject category)
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