Peak Noise Prediction in Loosely Coupled Interconnect

| Interconnect in VLSI circuits is best modeled as a lossy transmission line in high speed integrated circuits. Analytical expressions for the coupling noise between adjacent interconnect are presented to estimate the peak noise voltage on a quiet line based on the assumption that these interconnections are loosely coupled, where the e ect of the coupling noise on the waveform of an active line is small. These closed form expressions are also applied to the condition of a varying load impedance. The estimated error of the peak noise amplitude at the near end of the quiet line is less than 15% under high loss and non-matching load conditions.