USING AN OSCILLOSCOPE TO MAKE POWER SUPPLY NOISE MEASUREMENTS

摘要

The aim, as with any other electronic product, is of course to achieve the highest customer and user satisfaction at the lowest possible production cost. Today's electronics feature higher-speed switching, faster slew rates, more active pins per package and smaller signal swings. Increased switching speeds and signal slew rates and the increased number of active pins result in more switching noise being induced in power supplies. At the same time, circuits are becoming more susceptible to power supply noise with reduced signal amplitudes translating to reduced noise margins.