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Advanced Capacitive Sensing for Mobile Devices

  • Hans W. KleinEmail author
  • O. Karpin
  • I. Kravets
  • I. Kolych
  • D. MacSweeney
  • R. Ogirko
  • D. O’Keefe
  • P. Walsh
Chapter

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.

Notes

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.

References

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    Steininger JM. Understanding wide-band MOS transistors. IEEE. 1990.Google Scholar
  2. 2.
    Baxter LK. Capacitive sensors: design and applications. Wiley; 1996.Google Scholar
  3. 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. 4.
    Maltoni D, et al. Handbook of fingerprint recognition. Springer Professional Computing; 2003.Google Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Hans W. Klein
    • 1
    Email author
  • O. Karpin
    • 1
  • I. Kravets
    • 1
  • I. Kolych
    • 1
  • D. MacSweeney
    • 2
  • R. Ogirko
    • 1
  • D. O’Keefe
    • 2
  • P. Walsh
    • 2
  1. 1.Cypress SemiconductorSan JoseUSA
  2. 2.Cypress SemiconductorCorkIreland

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