HIGH-SPEED OP-AMPLIFIER OUTPUT STAGE Russian patent published in 2023 - IPC H03F3/24 

FIELD: microelectronics

SUBSTANCE: high-speed output stage of an operational amplifier is proposed, containing an input (1) and an output (2) of the device, an input transistor (3), the first (4) power supply bus, the first (5) output transistor, the second (6) output transistor, the second (7) power supply bus, potential displacement circuit (8), reference current source (9). At the same time, an additional transistor (10) is introduced into the circuit, the base of which is connected to the input (1) of the device, the collector is connected to the second (7) bus of the power source, and the emitter is connected to the first (4) bus of the power source through a current-stabilizing two-pole (11) and connected to the base of the second (6) output transistor through an additional capacitor (12).

EFFECT: high slew rate for both positive and negative input voltages.

1 cl, 13 dwg