DIFFERENTIAL OPERATING AMPLIFIER Russian patent published in 2011 - IPC H03F3/45 H03F3/34 

FIELD: radio engineering.

SUBSTANCE: differential operating amplifier includes input differential cascade (DC) (1) with the first (2) and the second (3) current outputs; the first output transistor (4) the collector and base of which is connected to the base of the second (5) output transistor, the third output transistor (6) the base of which is connected to collector of the second (5) output transistor and the first (2) current output DC (1), the first current-stabilising bipole (CB) (7), buffer amplifier (8) the input of which is connected to collector of the third (6) output transistor and the second CB (9); at that, emitters of the first (4), the second (5), the third (6) output transistors are connected to bus (10) of power supply. To the diagram there introduced is the first (11) and the second (12) additional transistors the emitters of which are connected to the first CB (7), and bases are the first (13) and the second (14) additional inputs of device; at that, collector of the first (11) additional transistor is connected to base of the second (5) output transistor.

EFFECT: decreasing absolute U_offset value and its temperature drift.

2 cl, 8 dwg