DIFFERENTIAL OPERATIONAL AMPLIFIER WITH PARAPHASE OUTPUT Russian patent published in 2012 - IPC H03F3/45 

FIELD: radio engineering.

SUBSTANCE: differential operational amplifier with a paraphrase output comprises an input differential cascade, the first and second output transistors, the first and second additional transistors, the first and second correcting capacitors, the first and second dipoles of a collector load, from the first to the fourth current-stabilising dipoles.

EFFECT: expansion of a working frequencies range 2-3 times for conventional applications of a DA -operation in circuits with common negative feedback.

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