Tuesday, 16 July 2013

Noise Reduction Techniques for Microcontroller-Based Systems

With today’s advancements in semiconductor technology and the push toward faster microcontroller units (MCUs) and peripherals, new product designs are faced with an increasing threat from electromagnetic interference (EMI). Earlier, the issue of emission and interference was referred to as EMI or RFI (for radio frequency interference). It is now referred to in more positive terms by replacing interference"withcompatability." Electromagnetic compatibility (EMC) encompasses both emission and
susceptibility for a given system. Although this application note focuses primarily on emission, some of the guidelines presented throughout this document will affect susceptibility as well. EMI can, and often does, cause delays in the product development schedule. Early and continuous attention to the effects of EMC/EMI will give the product the best possible chance for minimum cost and schedule delays, while lack of attention in this area will almost certainly translate to added cost and schedule delay.

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