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

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 (T) (4) the collector and base of which is connected to the base of the second (5) output T, the third output T (6) the base of which is connected to collector of the second T (5) and the first current output (2) of input DC (1), the first current-stabilising bipole (CB) (7), buffer amplifier (8) the input of which is connected to collector of the third T (6) and the second CB (9); at that, emitters of the first T (4), the second T (5), the third T (6) are connected to bus (10) of power supply. To the scheme there introduced is the first additional T (11) the collector of which is connected to collector of the first T (4); emitter is connected to the first CB (7), and base is connected to potential offset circuit (12).

EFFECT: decreasing absolute U_offset value and its temperature drift.

3 cl, 5 dwg