Push-pull amplifier with quiescent current adjuster

摘要

A push-pull amplifier has an input node and a series connection of two resistors. The series connection comprises a first terminal, a second terminal, and a third terminal. A first resistor of the two resistors is connected between the first terminal and the second terminal. A second resistor is connected between the second and third terminals. The input node is connected to the second terminal. A first controllable current source is connected to the first terminal of the series connection for sourcing a first current to the series connection. A second controllable current source is connected to the third terminal of the series connection for sinking a second current from the series connection. A first transistor and a second transistor are connected in push-pull configuration, wherein a control input of the first transistor is connected to the first terminal of the series connection and a control input of the second transistor is connected to the third terminal of the series connection.

主权项

1. A push-pull amplifier comprising:
an input node; a series connection of two resistors, the series connection comprising a first terminal, a second terminal, and a third terminal, wherein a first resistor of the two resistors is connected between the first terminal and the second terminal, wherein a second resistor of the two resistors is connected between the second terminal and the third terminal, and wherein the input node is connected to the second terminal; a first controllable current source connected between the first terminal of the series connection and a first supply potential node for sourcing a first current to the series connection; a second controllable current source connected between the third terminal of the series connection and a second supply potential node for sinking a second current from the series connection, wherein the first and second supply potential nodes are different; a first transistor and a second transistor in push-pull configuration, wherein a control input of the first transistor is connected to the first terminal of the series connection and a control input of the second transistor is connected to the third terminal of the series connection, wherein the first supply potential node is configured to couple to a first supply potential, and the second supply potential node is configured to couple to a second, different supply potential.