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Locally-Stable Macromodels of Integrated Digital Devices for Multimedia Applications

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4 Author(s)
Stievano, I.S. ; Dipt. di Elettron., Politec. di Torino, Turin ; Siviero, C. ; Maio, I.A. ; Canavero, F.G.

This paper addresses the development of accurate and efficient behavioral models of digital integrated circuits for the assessment of high-speed systems. Device models are based on suitable parametric expressions estimated from port transient responses and are effective at system level, where the quality of functional signals and the impact of supply noise need to be simulated. A potential limitation of some state-of-the-art modeling techniques resides in hidden instabilities manifesting themselves in the use of models, without being evident in the building phase of the same models. This contribution compares three recently-proposed model structures, and selects the local-linear state-space modeling technique as an optimal candidate for the signal integrity assessment of data links. In fact, this technique combines a simple verification of the local stability of models with a limited model size and an easy implementation in commercial simulation tools. An application of the proposed methodology to a real problem involving commercial devices and a data-link of a wireless device demonstrates the validity of this approach.

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Advanced Packaging, IEEE Transactions on  (Volume:31 ,  Issue: 4 )