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Characterization of CMOS-MEMS resonant pressure sensors

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10.1109/JSEN.2017.2747140
 
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hdl:2117/107770

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Banerji, Saoni
Fernández Martínez, Daniel
Madrenas Boadas, JordiMés informacióMés informacióMés informació
Document typeArticle
Defense date2017-08-30
Rights accessOpen Access
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
Abstract
IEEE Comprehensive characterization results of a CMOS-MEMS resonant pressure sensor are presented. We have extensively evaluated the key performance parameters of our device in terms of quality factor (Q) variations under variable conditions of temperature and pressure, characterized by Knudsen number (Kn). The fundamental frequency of the reported device is 104.3 kHz. Over the full-scale pressure range of 0.1 to 100 kPa and a temperature range of –10 °C to 85 °C, Q from 450 to 62.6 have been obtained. Besides, static variations of the device capacitance have been measured and analyzed with temperature to evaluate the spring softening and the pull-in effects. A nonlinearity analysis has been performed to assess the device stability. Furthermore, a statistical mismatch analysis has been carried out to determine the deviation of resonance with etching time and ascertain maximum device yield. With our in-house BEOL metal-layer release, this sensor can be monolithically embedded in the same substrate as standard CMOS integrated circuits, resulting in a significant cost and area reduction.
CitationBanerji, S., Fernández, D., Madrenas, J. Characterization of CMOS-MEMS resonant pressure sensors. "IEEE sensors journal", 30 Agost 2017, vol. 17, núm. 20, p. 6653-6661 
URIhttp://hdl.handle.net/2117/107770
DOI10.1109/JSEN.2017.2747140
ISSN1530-437X
Publisher versionhttp://ieeexplore.ieee.org/document/8022865/
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  • AHA - Advanced Hardware Architectures Group - Articles de revista [34]
  • Departament d'Enginyeria Electrònica - Articles de revista [1.531]
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