New grounded-capacitor realizations of a third-order low-pass butterworth characteristic using the DVCCS/DVCVS

Two new configurations employing the differential voltage-controlled current/voltage source (DVCCS/DVCVS) are proposed for the realization of either an inverting or a noninverting third-order low-pass Butterworth transfer function. Both structures use a minimum of passive components which are of equal value with the capacitors being grounded. The sensitivities of the network parameters are low.