FIELD: radio engineering.
SUBSTANCE: invention relates to the field of radio engineering. To achieve the effect, an operational amplifier based on a push-pull "kinked" cascode and complementary field-effect transistors with a control pn-junction is proposed, in which the source of the first (4) input field-effect transistor is connected to the gate of the third (6) input field-effect transistor and through the first (16) auxiliary resistor connected to the source of the third (6) input FET, the source of the second (5) input FET is connected to the gate of the fourth (7) input FET and through the second (17) auxiliary resistor is connected to the combined sources of the first (6) and second (7) input field effect transistors.
EFFECT: creation of conditions under which the input capacitance in the op-amp is halved, and small values of the systematic component of the zero bias voltage are realized.
4 cl, 7 dwg
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