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January 2019
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33 Reads
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5 Citations
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.
... Due to their low cost, low power and robustness, capacitive touch sensors are often used to realize user interface functions such as buttons, sliders, and wheels [4]. Since capacitive sensors do not consume static power, the power consumption of a capacitive sensing system will be limited by that of the readout circuitry, typically a capacitance-to-digital-converter (CDC), [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. ...
January 2019
