BIPOLAR-FIELD DIFFERENTIAL OPERATIONAL AMPLIFIER Russian patent published in 2017 - IPC H03F3/45 

FIELD: electricity.

SUBSTANCE: proposed bipolar-field differential operational amplifier, which comprises an input differential stage (1) with a first (2) and second (3) antiphase current outputs, the first (4) current input, the first (5) a field effect transistor, the first (6) a power line, the first (7) auxiliary current stabilizing two-pole, the first (8) current stabilizing two-pole, a second (9) power bus, a second (10) current stabilizing two-pole, the first (11) of the output transistor current mirror (12), second (13) output transistor, a buffer amplifier (14), the first (15) and second (16) auxiliary transistors. The first (17) and the second (18) additional transistors are introduced into the scheme, the second (19) auxiliary current stabilizing two-pole, third (20) auxiliary current stabilizing two-pole.

EFFECT: increase in the open voltage gain of the operational amplifier, while maintaining high levels of stability on the bias voltage zero.

2 cl, 12 dwg