Part 1 of this series addressed a pitfall to be avoided when using Sallen-Key active filters. Please also see my article Avoid Misuse of Sallen-Key Filters. The key point of that essay was that the op ...

All circuits, analog or digital, have characteristics dependent on the values of their component parts. Invariably, these parts are non-ideal in many ways. Even their most fundamental characteristics, ...

My previous column described the Sallen-Key circuit for a low-pass filter. At times, you will not find a low-pass filter with the specifications you need in an anti-alias circuit, so you might decide ...