Items Tagged with 'wave'

ARTICLES

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Intra-Pair Skew: Wave Propagation in Screened Single Pair

In this article, it is demonstrated that intra-pair skew cannot be properly defined on a screened single pair, as the signal launched in a single wire does not propagate as such along the pair due to inter-wire coupling.


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Target Impedance Is Not Enough

Target impedance has become a standard tool when designing a power distribution network (PDN). It establishes a limit to the highest impedance the power rail on the die should see looking into the PDN. If the PDN impedance stays below this limit, even the worst-case transient current from the die will generate an acceptably low rail voltage noise.


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Target Impedance Limitations and Rogue Wave Assessments on PDN Performance

A common design technique for power distribution networks (PDN) is the determination of the peak distribution bus impedance that will assure that the voltage excursions on the power rail will be maintained within allowable limits, generally referred to as the target impedance. In theory, the allowable target impedance is determined by dividing the tolerable voltage excursion by the maximum change in load current.


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