FIELD: measuring equipment.
SUBSTANCE: invention relates to measurement equipment and can be used as spectrum limiters or broadband selective amplifiers connected at the input of analogue-to-digital converters for various purposes. Low-sensitive second-order ARC filter based on two multi-differential operational amplifiers comprises capacitors and resistors, the interaction circuit of which provides independent adjustment of the Q-factor of the AFC pole, at which transmission coefficient and frequency of AFC pole, which depend on other parameters of elements, remain constant.
EFFECT: technical result consists in production of complete set of AFC filters LPF, HPF, BPF, SF at its outputs.
7 cl, 1 tbl, 14 dwg
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