Daily Archives: January 12, 2016


We have so far stuck to the simplest cases of filters, often single-pole; is a band pass/stop filter two poles? Technically yes, but the term usually expresses the idea that both poles affect the same pass/stop frequency together, doubling the rate of attenuation. In other words, where a single pole […]

Cooking with Op-Amps, part 11: Sallen-Key Filters!