HYBRID DIFFERENTIAL AMPLIFIER Russian patent published in 2014 - IPC H03F3/45 

FIELD: radio engineering, communication.

SUBSTANCE: hybrid differential amplifier comprises a first (1) input transistor, the base of which is connected to the non-inverting input (2) of the device, the collector is connected to a first (3) power supply bus, and the emitter is connected to emitter of a second (4) input transistor, wherein the base of the second (4) input transistor is connected to the inverting input (5) of the device, and the collector is connected to the output (6) of the device and is connected to a second (7) power supply bus through a load circuit (8). The first (1) input transistor used is a first (1) junction field-effect transistor, the gate of which corresponds to the base, the source to the emitter and the drain to the collector of a bipolar transistor, and the load circuit (8) comprises a second (9) junction field-effect transistor, the gate of which is connected to the second (7) power supply bus, the drain is connected to the collector of the second (4) input transistor, and the source is connected to second (7) power supply bus through an additional p-n junction (10), identical to the emitter-base junction of the second (4) input transistor.

EFFECT: reducing the systematic component of the zero bias voltage and temperature and radiation drift thereof.

2 cl, 11 dwg