Patent ID: 7053699

Claim:
A current output stage having an input and an output, the current output stage composing: a first transistor including a gate connected to the input of the current output stage, a drain connected to the output of the current output stage, and a source; a second transistor including a gate connected to the input of the current output stage, a source connected to the source of the first transistor, and a drain; a third transistor including a source connected to the drain of the second transistor, a gate, and a drain; a first current mirror including an input connected to the drain of the third transistor, and an output; and a second current mirror including an input connected to the output of the first current mirror, and an output connected to the input of the current output stage; wherein the third transistor is part of a voltage follower circuit that causes a voltage at the source of the third transistor to follow a voltage at the output of the current output stage.