you can simulate FIR, IIR filters and other digital signal processing application, passing from the continuous frequency domain of the Laplace transform to the discrete time domain of the Z transform. For example apply the Z-transform to the difference equation of a digital filter and find the transfer function H(z). In PSpice the quickest way to implement this simulation is with a Laplace part, where specify the numerator and denominator of H(z), replacing z with exp(s*T), and a PARAM part that defines the relationship between the sampling frequency and the sampling period. I’ve uploaded a IIR second order filter example.
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