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

FIELD: radio engineering.

SUBSTANCE: differential operating amplifier includes input differential cascade (1) with the first (2) and the second (3) current outputs; current mirror (4) the input of which is connected to the first (2) current output of input differential cascade (1), and output is connected to the base of input transistor (T) (5) of buffer amplifier (6), and current-stabilising bipole (CB) (7). To the scheme there introduced is the first (8) and the second (9) additional T the emitters of which are connected to the first CB (7), bases are additional inputs (10) and (11) of the device, collector of the first (8) additional T is connected to the output of current mirror (4), and emitter of input T (5) of buffer amplifier (6) is connected to the second (12) additional CB.

EFFECT: decreasing absolute U_offset value and its temperature and radiation drift.

6 cl, 11 dwg