Comparison of modeling techniques in circuit variability analysis

Mustafa Berke Yelten*, Paul D. Franzon, Michael B. Steer

*Bu çalışma için yazışmadan sorumlu yazar

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9 Atıf (Scopus)


Three nonlinear reduced-order modeling approaches are compared in a case study of circuit variability analysis for deep submicron complementary metal-oxide-semiconductor technologies where variability of the electrical characteristics of a transistor can be significantly detrimental to circuit performance. The drain currents of 65 nm N-type metal-oxide-semiconductor and P-type metal-oxide-semiconductor transistors are modeled in terms of a few process parameters, terminal voltages, and temperature using Kriging-based surrogate models, neural network-based models, and support vector machine-based models. The models are analyzed with respect to their accuracy, establishment time, size, and evaluation time. It is shown that Kriging-based surrogate models and neural network-based models can be generated with sufficient accuracy that they can be used in circuit variability analysis. Numerical experiments demonstrate that for smaller circuits, Kriging-based surrogate modeling yields results faster than the neural network-based models for the same accuracy whereas for larger circuits, neural network-based models are preferred as, in all metrics, better performance is obtained. Within-die variations for an XOR circuit are analyzed, and it is shown that the nonlinear reduced-order models developed can more effectively capture the within-die variations than the traditional process corner analysis.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)288-302
Sayfa sayısı15
DergiInternational Journal of Numerical Modelling: Electronic Networks, Devices and Fields
Basın numarası3
Yayın durumuYayınlandı - May 2012
Harici olarak yayınlandıEvet

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