DIFFERENTIAL AMPLIFIER WITH NONLINEAR PARALLEL CHANNEL Russian patent published in 2006 - IPC H03F3/45 

FIELD: radio engineering for use in micro-electronic amplifiers and transformers of analog signals.

SUBSTANCE: differential amplifier (dwg.2) contains input differential cascade 1 on input transistors 2,3, emitters of which are connected to supporting current source 4 and through voltage repeater 6 - to bases of output transistors 11,12, emitters of which are connected to collectors of input transistors 2,3, bases of which are connected to bases of appropriate auxiliary transistors 9,10, emitters of which through provided additional transistors 18,19 are connected to current outputs 14,15 of output transistors 11,12, bases of transistors 18,19 are connected to collectors of transistors 2,3, while collectors of transistors 18,19 and 9,10 perform functions of appropriate current outputs (20,21 and 22,23) of parallel channel, providing amplification of large amplitudes of input signal.

EFFECT: decreased zone of non-sensitivity of pass characteristic while maintaining statistical precision at high level.

4 cl, 10 dwg