FIELD: radio engineering.
SUBSTANCE: invention relates to radio engineering. To achieve the effect, a filter is proposed that contains an input (1) and an output (2), an input field-effect transistor (3), a current source (5), and the output of the device (2) is connected to the source of the input field-effect transistor (3), the first connected in series ( 7) and the second (8) resistors, the first (9) capacitor, and the output of the device (2) is connected to the common node of the first (7) and second (8) frequency-setting resistors connected in series through the second (10) frequency-setting capacitor. The output of the device (2) is connected to the source of the input field-effect transistor (3) through the first (11) additional resistor, and the reference current source (5) is made on an additional field-effect transistor (12), the gate of which is connected to the second (6) power supply bus, and the source is connected to the second (6) power supply bus through the second (13) additional resistor.
EFFECT: creation of an anti-aliasing low-pass filter, in which the static voltage at the output of the low-pass filter is minimized at zero voltage at its input.
6 cl, 15 dwg
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