Converting a simple analog Butterworth filter into a digital filter

1. How do you convert an analog filter to a digital filter?
2. Is Butterworth filter digital?
3. What is the difference of analog to digital filters?

How do you convert an analog filter to a digital filter?

The procedure consists of three main parts: first the state-space of the analog filter is computed based on diagram or netlist of the analog circuit, then a conversion from analog domain to digital domain is used. Finally the digital filter is delivered in system function form.

Is Butterworth filter digital?

Butterworth filters are one of the most commonly used digital filters in motion analysis. They are fast and simple to use. Since they are frequency-based, the effect of filtering can be easily understood and predicted.

What is the difference of analog to digital filters?

Analog filtering involves physical hardware that alters analog signals before they are passed off to other components to be processed. Digital filtering involves passing analog data to a processor that then runs code to digitally filter the data.