AN4038 datasheet(29/39 Pages) STMICROELECTRONICS

поискавой системы для электроныых деталей

AN4038 датащи(PDF) 29 Page - STMicroelectronics

номер детали	AN4038

подробное описание детали	Guidelines to optimize proximity detection with STM8TL5xxx capacitive sensors

PDF	39 Pages

Scroll/Zoom	100%

производитель	STMICROELECTRONICS [STMicroelectronics]

домашняя страница	http://www.st.com

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29 / 39 page

AN4038

Proximity sensor design

Doc ID 022686 Rev 1

29/39

Figure 28.

Detection area and detection distance versus ground surrounding

Surrounding the electrode plate can improve the directivity of the proximity detection, but

clearly reduces the detection range.

In conclusion, a ground backplane or ground surrounding close to the sensor plates

drastically reduces the detection distance. It is strongly advised to keep the ground

backplane or ground surrounding at a distance from the sensor. This helps maintain

proximity sensitivity of the application.

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