Abstract

Owing to the ever-increasing clock frequency in digital circuits and systems, simultaneous switching noise (SSN), caused by fast rise/fall pulse edges in combination with parasitic inductance in the power supply distribution network, is becoming a severe problem in many high-speed digital system designs. It is quantitatively shown that the influence of SSN, which is negligible when the rise/fall time is long (> 5 ns), becomes a critical factor, limiting system performance in the sub-nanosecond rise time region. Based on theoretical analyses and computational simulations in respect to various packaging techniques, technical solutions and design guidelines for reducing SSN are summarised.

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