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Merging optimization techniques and simulation technologies presents an opportunity for creation of optimal structure, bypassing expensive and time consuming process of model construction and measurement. However simulation process for a complicated circuit may take significantly long time, which grows with increasing of model accuracy. Optimization process may call for simulation (depending on count of varying parameters, and circuit behavior) tens, hundreds or even thousand times. The two design requirements: create project in a reasonable time with a reasonable accuracy, conflict one with each other. In practice the design engineer insist on using the fastest simulation model possible. The trap associated with this approach is discussed in presented paper. An influence of simulation model accuracy on convergence of optimization process and exactness of the final result is discussed.
Date of Conference: 22-24 May 2006