Advantages of the shield function

AN2967

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Doc ID 15601 Rev 1

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Advantages of the shield function

Some STM8T and STM8TS capacitive sensors have a built-in shielding function. The

advantages of the shield include:

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The sensing antenna (pad) is separated from the sealed electronics.

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The designer can shield the sensing wire from unwanted influences such as ground

planes, metal objects and other traces on the PCB. The shield also counters

environmental interference such as water flowing into a water pipe or people passing

past the sensing wire.

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The shield enhances proximity detection when it is used with battery (DC) applications.

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An integrated driven shield allows to achieve high performance at virtually no additional

cost.