DIFFERENTIAL AMPLIFIER WITH PARAPHASE OUTPUT Russian patent published in 2011 - IPC H03F3/45 

FIELD: electricity.

SUBSTANCE: differential amplifier with paraphase output includes input differential cascade (1) with the first (2) and the second (3) outputs, the first (4) bipole of collector load, which is connected between the first (2) output of input differential cascade and the first (5) power source; the second (6) bipole of collector load, which is connected between the second (3) output of input differential cascade and the first (5) power source, the second (7) power source connected to emitter circuit of input differential cascade (1). The first (2) output of input differential cascade (1) is connected to input of the first (8) non-inverting current repeater, the second (3) output of input differential cascade (1) is connected to the input of the second (9) non-inverting current repeater; output of the first (10) additional inverting current amplifier is connected to the second (3) output of input differential cascade (1), and its input is connected to output of the first (8) non-inverting current repeater; output of the second (11) additional inverting current amplifier is connected to the first (2) output of input differential cascade (1), and its input is connected to output of the second (9) non-inverting current repeater; at that, common emitter outputs of the first (10) and the second (11) additional inverting current amplifiers are connected to the second 7 power source.

EFFECT: increasing limit values of amplification coefficient as to DA voltage at low-voltage power supply.

5 cl, 16 dwg