Current-input ADC measures voltages


Posted on Feb 8, 2013

A practical realization of a spread-spectrum technique lowers a µP`s clock-related EMI by approximately 4 dB without the drawbacks associated with modulation (Figure 1). The spread-spectrum technique is a popular method to reduce µP-clock-related EMI (Reference 1). Using this method, the µP`s clock frequency constantly shifts around and creates a moving target for quasipeak EMI detection. Although this method dramatically reduces measured EMI, it has a few drawbacks.






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