TWO-STAGE DIFFERENTIAL OPERATIONAL AMPLIFIER WITH HIGHER GAIN Russian patent published in 2017 - IPC H03F3/45 

FIELD: radio engineering, communication.

SUBSTANCE: two-stage differential operational amplifier with higher gain includes an input differential stage, the first output transistor, the collector of which is connected to the input of the current mirror, a power supply unit, the second output transistor, the first auxiliary transistor, the second auxiliary transistor, the third auxiliary transistor, the first supplemental voltage follower, the fourth auxiliary transistor and the second supplementary voltage follower.

EFFECT: increased voltage gain while maintaining the high thermal and radiation stability of the zero bias voltage.

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