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Low-Power Analog Techniques, Sensors for Mobile Devices, and Energy Efficient Amplifiers pp 131–153Cite as

Advanced Capacitive Sensing for Mobile Devices

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Abstract

This chapter presents an overview of the technology behind capacitive sensing in mobile devices and beyond. Capacitive-sensing systems handle signals from the pF range down to aF. Examples to illustrate this include “single-pixel” buttons, sliders, touch screens, and “kilo-pixel” fingerprint readers.

Challenges and solutions for sensors, architectures, algorithms, and circuit technology are discussed.

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Notes

  1. 1.

    Source: Cypress Semiconductor.

  2. 2.

    © System Plus Consulting, France.

References

  1. Steininger JM. Understanding wide-band MOS transistors. IEEE. 1990.

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  2. Baxter LK. Capacitive sensors: design and applications. Wiley; 1996.

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  3. Klein HW. Noise Immunity of Touchscreen Devices. Cypress White Paper, Feb 2013. www.cypress.com/file/120641/download. “Getting Started with CapSense”, 2017, Cypress Application Note AN64846.

  4. Maltoni D, et al. Handbook of fingerprint recognition. Springer Professional Computing; 2003.

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Acknowledgments

The authors would like to thank V. Bharathan, V. Bihday, O. Hoshtanar, O. Kapshii, A. Maharyta, and D. Starr for their various contributions to this chapter.

Author information

Authors and Affiliations

  1. Cypress Semiconductor, San Jose, CA, USA

    Hans W. Klein, O. Karpin, I. Kravets, I. Kolych & R. Ogirko

  2. Cypress Semiconductor, Cork, Ireland

    D. MacSweeney, D. O’Keefe & P. Walsh

Authors
  1. Hans W. Klein
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  2. O. Karpin
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  3. I. Kravets
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  4. I. Kolych
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  5. D. MacSweeney
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  6. R. Ogirko
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  7. D. O’Keefe
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  8. P. Walsh
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Corresponding author

Correspondence to Hans W. Klein .

Editor information

Editors and Affiliations

  1. Delft University of Technology, Delft, Zuid-Holland, The Netherlands

    Kofi A. A. Makinwa

  2. University of Milano-Bicocca, Milan, Italy

    Andrea Baschirotto

  3. Eindhoven University of Technology, Eindhoven, Noord-Brabant, The Netherlands

    Pieter Harpe

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Cite this chapter

Klein, H.W. et al. (2019). Advanced Capacitive Sensing for Mobile Devices. In: Makinwa, K., Baschirotto, A., Harpe, P. (eds) Low-Power Analog Techniques, Sensors for Mobile Devices, and Energy Efficient Amplifiers . Springer, Cham. https://doi.org/10.1007/978-3-319-97870-3_7

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  • DOI: https://doi.org/10.1007/978-3-319-97870-3_7

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-97869-7

  • Online ISBN: 978-3-319-97870-3

  • eBook Packages: EngineeringEngineering (R0)

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