Multiple parameter tunable active integrator filters

This article treats periodically switched active integrator networks, the parameters of which are controlled by external switching functions. In order to be able to calculate the zero-input response or the impulse response of this kind of networks, conditions for a closed solvability of the network equations are derived. The same conditions lead to an equivalent time-invariant reference network model and to a one-to-one correspondence between the network parameters and the switching functions. The results are relevant to the design of switched-capacitor system, too.