Patent ID: 8384480

Claim:
A differential amplifier comprising: a first current path that is connected between a first power-supply and a second power-supply, and outputs one of differential output signals; and a second current path that is connected between the first power-supply and the second power-supply, and outputs the other of the differential output signals, wherein the first current path includes: a first transistor that is selectively interconnected between the first power-supply and a first output terminal that outputs one of the differential output signals, and has a control terminal receiving one of the differential input signals; a second transistor that is connected between the second power-supply and the first output terminal, and has a control terminal receiving the other of the differential input signals; and a first switch circuit; and the second current path includes: a third transistor that is selectively interconnected between the second power-supply and a second output terminal that outputs the other of the differential output signals, and has a control terminal receiving one of the differential input signals; a fourth transistor that is connected between the first power-supply and the second output terminal, and has a control terminal receiving the other of the differential input signals; and a second switch circuit, and one of the first and second switch circuits is connected to the first power-supply and the other of the first and second switch circuits is connected to the second power-supply.