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Employ key-switch controllers in smartphones

Posted: 29 Oct 2012     Print Version  Bookmark and Share

Keywords:key-scan  smartphone  key pads 

This application note by Maxim Integrated describes and compares two key-scan methods commonly used in smartphone key pads. It shows the benefit of eliminating the use of EMI filters for the low EMI method. The capacitive loading allowance associated with the ESD protection diode is also estimated.

View the PDF document for more information.

Originally published by Maxim Integrated at as "Using Key-Switch Controllers in Smartphones".

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