In the paper, sensivity properties of all-pole canonical low-pass Gm-C filters are investigated. The two most important representatives of this class are leap-frog and inverse follow-the-leader structures. We present a general structure of all-pole cononical low-pass filter of arbitrary order as well as its matrix description. The formulas for sensivity functions are also given. The comparison of sensivity properties for canonical structures up to 10th order is performed for Butterworth, Chebyshev and Bessel filters. Design guidelines that follow from the presented results are also discussed.
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