FIELD: physics.
SUBSTANCE: invention relates to means of limiting the spectrum of a signal source, for example, during its further processing by analogue-to-digital converters of various modifications. Filter includes the first and the second operational amplifiers, the parameters adjustment of which is determined by the possibility of changing resistances of the resistors included into the declared filter circuit.
EFFECT: providing independent adjustment of such parameters of amplitude-frequency characteristic as pole frequency, pole attenuation, as well as transfer coefficient in pass band, as well as expansion of dynamic range by increasing amplitude of undistorted output sinusoidal signal of filter.
3 cl, 7 dwg
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