Patent ID: 7164317

Claim:
A class AB amplifier circuit, comprising: a folded cascode circuit including a split cascode, wherein the split cascode includes: a first cascode transistor including a source and a gate, wherein the first cascode transistor is arranged to receive a first cascode bias voltage at the gate of the first cascode transistor; and a second cascode transistor including a gate, and further including a source that is coupled to the source of the first cascode transistor, wherein the second cascode transistor is arranged to receive a second cascode bias voltage at the gate of the second cascode transistor, and wherein the class AB amplifier circuit is arranged such that at least one of the first cascode bias voltage or the second cascode bias voltage is based, in part, on at least one of a current associated with a high-side driver transistor or a current associated with a low-side driver transistor.