Implementation of Sallen-Key and Multi-Feedback (MFB) Architecture for Higher Order Butterworth Filters
نویسنده
چکیده
Filter design specifications can be manifest in all manner of necessity, whether they are high-pass, low-pass, band-pass, or stop-band filters. In addition, the parameters for such filters are defined for a very specific application. A design for a lowpass filter with a pass-band of 2k Hz and a stop-band of 4k will be discussed. The further properties of the filter are to allow for a 48 dB drop between the pass-band and the stopband, which results in the need to implement an 8 order filter. This paper will compare two very different filter architectures to meet these requirements: Sallen-Key and MultiFeedback (MFB).
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