On the testability of SC filters based on allpass sections
J.M. Canive, Antonio Petraglia · 2002
A methodology for testing switched-capacitor filters implemented by the parallel connection of allpass sections is presented. Mostly based on the analysis of frequency responses of second-order notch filters, the proposed approach enables clear fault detection and accurate estimation of the actually implemented parameter values. Simulation results are included to verify the functionality of the testing procedure.