CASCODE DIFFERENTIAL OPERATIONAL AMPLIFIER Russian patent published in 2018 - IPC H03F3/00 

FIELD: electricity.

SUBSTANCE: cascode differential operational amplifier includes: input differential cascade with an overall emitter chain, consistent with the first bus of power supply, the first, second, third, fourth additional transistors, bases of the first and the second additional transistors are connected to the first current output if differential input cascode, bases of the third and fourth additional transistors are connected to the second current output of differential input stage, the combined first and second emitters of additional transistors are connected with the emitter of the second output transistor, combined emitters of the third and fourth additional transistors are connected to the emitter of the first output transistor, headers of the second and third additional transistors are connected with the first current output of input differential cascade, and collectors of the first and fourth additional transistors are connected to the second current output of the differential input cascade.

EFFECT: increase of the open gain on the voltage of operational amplifier.

2 cl, 11 dwg