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Estimation of inductive and resistive switching noise on power supply network in deep sub-micron CMOS circuits

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3 Author(s)
Shiyou Zhao ; Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA ; Roy, K. ; Cheng-Kok Koh

In this paper, we propose an event-driven simulation based approach to estimate the worst case IR drop and Ldi/dt inductive noise an the power supply network. The switching noise is modeled as a weighted sum of the switching currents and the rates of change of the switching currents, where the weights are respectively the effective resistance and inductance (on the P/G network) experienced by each switching current. Monte Carlo and genetic algorithm are employed to search for the worst case input vector pair(s) that induce the maximum switching noise. The worst case input patterns are used in the SPICE simulation to verify the switching noise waveforms on the power supply network. Experimental results show that the worst case switching noise on the power supply network for ISCAS85 benchmark circuits implemented in TSMC 0.25 μm technology can be as high as 40% of the supply voltage Vdd

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Computer Design, 2000. Proceedings. 2000 International Conference on

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