From Silicon Labs
Electromagnetic interference (EMI), once the exclusive concern of equipment designers working with high-speed signals, is no longer limited to a narrow class of high-end applications. The high-speed clocking signals required to drive these ICs, however, generate more EMI and, as a consequence, more challenges for designers of consumer, enterprise, communications and embedded equipment. Rather than attempt to tune existing EMI levels to within acceptable limits, the most effective strategy for ensuring compliance is to employ design techniques that reduce the introduction of EMI in the first place.
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