Walter Chen

Maxim - Senior Scientist, Applications


Dr. Chen specializes in mixed-signal processing at Maxim Integrated Products

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Blog Post: Key-Switch Controllers Enhance Smart Phones

April 03, 2011

The key pad of most smart phones employs one of two key-scanning methods: conventional or low-EMI. By describing and comparing these methods, the following discussion illustrates a major benefit of the low-EMI method – it eliminates the need for EMI filters.

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