Elements of Sensitivity Theory

Abstract

The topic of network and filter sensitivity became relevant with the advent of inductorless, and in particular active-RC, filters. This is because the previously used passive LCR ladder filters have an extraordinary quality of being relatively insensitive to variations in component value caused by temperature and other ambient influences, as well as to initial tolerance of component values. Thus, neither sensitivity to ambient change nor filter stability in the sense of stray circuit oscillations was ever a serious – if any – issue with passive LCR filters.