HIGHLY LINEAR BUFFER

摘要

Techniques relating to buffer circuits. In one embodiment, a circuit includes a first transistor configured as a source follower and a feed-forward path coupled to the gate terminal of the first transistor and the drain terminal of the first transistor. In this embodiment, the feed-forward path includes circuitry configured to decouple the feed-forward path from a DC component of an input signal to the gate terminal of the first transistor. In this embodiment, the circuitry is configured to reduce a drain-source voltage of the first transistor based on the input signal. In some embodiment, the feed-forward path includes a second transistor configured as a source follower and the source terminal of the second transistor is coupled to the drain terminal of the first transistor. In various embodiments, reducing the drain-source voltage may improve linearity of the first transistor.

主权项

1. A circuit, comprising:
a first transistor having a first terminal, a second terminal, and a control terminal; and a feed-forward path coupled to the control terminal and the first terminal, wherein the feed-forward path includes circuitry configured to: decouple the feed-forward path from a DC component of an input signal to the control terminal; and reduce a voltage between the first and second terminals based on the input signal; wherein the second terminal is coupled to an output of the circuit.