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Tolerance Design of Active RC Filters

An engineering technique for the tolerance design of active RC filters using advanced OrCAD PSpice tools is considered. The implementation of the tolerance synthesis method based on sensitivity analysis is substantiated. The issues of the operability margin formation and the measuring of performance parameters, their sensitivity to variations in the element parameters are discussed. The variance balance allocation allows for significant differences in the availability of discrete resistors and capacitors with the required tolerances. Variations in the operational amplifier parameters are also taken into account.