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Nyquist AD Converters, Sensor Interfaces, and Robustness pp 129–147Cite as

Energy-Efficient Capacitive Sensor Interfaces

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Abstract

Capacitive sensor systems are potentially highly energy efficient. In practice, however, their energy consumption is typically dominated by that of the interface circuit that digitizes the sensor capacitance. Energy-efficient capacitive sensor interfaces are therefore a prerequisite for the successful application of capacitive sensors in energy-constrained applications, such as battery-powered devices and wireless sensor nodes. This chapter derives lower bounds on the energy consumption of capacitive sensor interfaces. A comparison of these bounds with the state-of-the-art suggests that there is significant room for improvement. Several approaches to improving energy efficiency are discussed and illustrated by two design examples.

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Authors and Affiliations

  1. Electronic Instrumentation Laboratory, DIMES, Delft University of Technology, Mekelweg 4, 2628 CD, Delft, The Netherlands

    Michiel A. P. Pertijs & Zhichao Tan

Authors
  1. Michiel A. P. Pertijs
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  2. Zhichao Tan
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Correspondence to Michiel A. P. Pertijs .

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Editors and Affiliations

  1. , Electrical Engineering, Eindhoven University of Technology, Building/room: Pt 5.08, Eindhoven, 5600, Netherlands

    Arthur H.M. van Roermund

  2. , Department of Physics, University of Milan-Bicocca, Milan, Italy

    Andrea Baschirotto

  3. , Dept. Elektrotechniek, K.U.Leuven, Kardinaal Mercierlaan 94, HEVERLEE, B-3001, Belgium

    Michiel Steyaert

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Pertijs, M.A.P., Tan, Z. (2013). Energy-Efficient Capacitive Sensor Interfaces. In: van Roermund, A., Baschirotto, A., Steyaert, M. (eds) Nyquist AD Converters, Sensor Interfaces, and Robustness. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-4587-6_8

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  • DOI: https://doi.org/10.1007/978-1-4614-4587-6_8

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  • Publisher Name: Springer, New York, NY

  • Print ISBN: 978-1-4614-4586-9

  • Online ISBN: 978-1-4614-4587-6

  • eBook Packages: EngineeringEngineering (R0)

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