A numerical solution to an analog problem

To derive a solution for an analog circuit problem, it is often useful to develop a model. This approach is generally accepted as developing an analytical model. However, finding the analytical solution is not always practical or possible as a result of higher-degree polynomials that require further resolution, or because of the time needed to develop the solution completely. In these situations, a discrete finite approach may be necessary. This application note develops a methodology to approximate a function with an RC network. This methodology can be easily expanded to match any function and generate a discrete solution.

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