chapter  12
34 Pages

Switched-Capacitor Filters

The accuracy of the absolute value of integrated passive devices (R and C) is very poor. As a consequence, the frequency response accuracy of integrated active-RC filters is poor and they are not feasible when high-accuracy performance is needed. A possible solution for the implementation of analog filters with accurate frequency response was given by the switched-capacitor (SC) technique in the late 1970s.