App note: EMC design considerations


Ever wonder why your project acts funny and sometimes causes unexpected outcome then one of these reasons are interference and how they inject into or emit from your designs. Learn more about EMC from Atmel’s design consideration notes.

The electromagnetic environment is getting tougher. High-frequency radio transmitters,  like mobile telephones, are found everywhere. More and more systems are using switching power supplies in the power circuit, and the overall number of electronic appliances is increasing every year.
Electronic circuits are becoming more and more sensitive.
Power supply voltages are decreasing, reducing the noise margin of input pins. Circuit geometries get smaller and smaller, reducing the amount of energy required to change a logic level, and at the same time reducing the amount of noise required to alter the logic values of signals.

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