Patent ID: 6906587

Claim:
An amplifier circuit comprising: a first pair of transistors and a second pair of transistors, wherein each of the first pair of transistors and the second pair of transistors includes a first terminal, a second terminal, and a control terminal, wherein the first terminal of each of the first pair of transistors is coupled to a voltage source, and wherein the second terminal of each of the first pair of transistors is coupled to the first terminal of a respective one of the second pair of transistors; a load coupled between the second terminals of the first pair of transistors; and a current source, coupled between a voltage reference and the second terminal of each of the second pair of transistors; wherein the current source is configured to generate a current; and wherein the amplifier circuit is operable to: route the current from a first one of the first pair of transistors to a first one of the second pair of transistors, and route the current from a second one of the first pair of transistors to a second one of the second pair of transistors.