K. Schumacher

TL;DR: Using voltage inverter switches, exact analog sampled-data equivalents of Rs, Ls and Cs, as well as unit elements, can be designed with MOS capacitors and switches, which allows low power switched capacitor filters without operational amplifiers and with a frequency capability approaching the megahertz range.

TL;DR: In this article, analog sampled-data switched capacitor MOS filters whose parameters are obtained directly from classical continuous doubly-terminated LC ladder filter design are discussed, which reduces the number of opamps and yields a basically passive circuit.