FIELD: radio engineering and communications.
SUBSTANCE: invention can be used as precision device for amplification of signals. Bipolar-field operational amplifier on basis of "bent" cascode includes input differential cascade (1), first (3) power supply bus, first (7) output transistor, first (8) current resistor, second (9) power supply bus, second (11) output transistor, second (12) current resistor, dynamic load circuit (13), matched with first (3) power supply bus, input (14) is connected to collector of first (7) output transistor, as well as first (17) forward-biased p-n-junction, second (18) forward-biased p-n-junction, first (19) and second (20) additional resistors.
EFFECT: reduction of static current consumed by operational amplifier from supply sources (without load), and reduction of zero offset voltage.
3 cl, 8 dwg
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