CLASS "AB" NON-INVERTING CURRENT AMPLIFIER Russian patent published in 2022 - IPC H03F3/45 

FIELD: analog microelectronics.

SUBSTANCE: present invention relates to the field of analog microelectronics and can be used in various analog and analog-to-digital devices - operational amplifiers, voltage stabilizers, normalizing converters, etc. As a result, the claimed device, unlike the prototype, operates in the "AB" class mode. A non-inverting current amplifier of class "AB" contains a current input (1) and a current output (2) of the device, an output transistor three-terminal circuit (3) with low-resistance (4) and high-resistance (5) inputs, as well as a high-resistance output (6) connected to a current output (2) of the device, the first (7) bus of the power supply, a current-stabilizing two-terminal circuit (8), the first output of which is connected to the first (7) bus of the power supply, the input current source (9) connected to the current input (1) of the device, the circuit load (10), connected between the current output (2) of the device and the second (11) bus of the power source, the potential bias circuit (12) connected to the high-resistance input (5) of the output transistor three-pole (3). An additional transistor three-pole (13) with low-resistance (14) and high-resistance (15) inputs, as well as a high-resistance output (16), which is matched with the first (7) power supply bus, is introduced into the circuit. The current input (1) of the device is connected to the second output of the current-stabilizing two-terminal network (8) through an additional resistor (17) and connected to the high-resistance input (15) of the additional transistor three-terminal network (13), and the low-resistance input (14) of the additional three-terminal network (13) is connected to the low-resistance (4) input of the output transistor three-terminal network (3).

EFFECT: increasing the speed of the device by creating conditions under which the maximum possible output current Iout.max of the proposed device exceeds 5-10 times the static current I8 of the current-stabilizing two-pole 8.

8 cl, 11 dwg