When you design an analog, lowpass, antialiasing filter, you would expect its gain amplitude to continuously decrease beyond the filter's cutoff frequency. For the most part, this assumption is a safe ...

I’ve blogged how I trying to assemble a group of filter fanatics. I that post I mentioned that I had a great article coming from Chris Paul, an engineer at Motorola. Well it took a while, but we ...

I was concocting a rather silly low-pass filter design, when I remembered that Messrs Sallen and Key did it better in the 1950s, and decided to use their two-pole design to implement a Butterworth ...

(Refer to the circuits of Figures 6-10, 6-11, B-1, and B-2, normalized to 1 ohm at ...

There comes a time in every electronic designer’s life when, whether they know it or not, they need an analog filter in their design. If you’re coming from a digital background, where everything is ...

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 ...

Researchers developed a two-stage random forest framework that classifies faults in Sallen–Key and Chebyshev analog filter ...

How can we not have Nick review a synth made by PWM (Paul Whittington Music)? The Malevolent is an analog 2 oscillator synth with a Sallen-Key filter (same as MS20), two envelopes, single LFO, post ...

Active high pass filters pass signals from high frequencies and reject signals from low frequencies. There are two basic types of products: switched capacitor and continuous. Both are available with ...