FIELD: radio equipment.
SUBSTANCE: invention relates to radio engineering, as well as measurement equipment, and can be used, for example, as spectrum limiters connected at the input of analogue-to-digital converters for various purposes. Disclosed active RC-filter comprises first (6), second (7) and additional (13) multi-differential operational amplifiers (MOA), capacitors and resistors interconnected so as to obtain at its outputs a full set of characteristics of AFC, LPF, HPF, BPF, BRF filter, as well as to provide independent adjustment of Q-factor poles AFC, in which transmission coefficient and frequency of pole AFC, depending on other parameters of elements, remain constant.
EFFECT: technical result consists in simplification of adjustment and adjustment of frequency selection devices based on the proposed universal ARC-filter.
10 cl, 17 dwg, 1 tbl
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