Patent ID: 7551003
Filing Date: 2009-06-23
Classification: G05F

Abstract:
1. A current mirror circuit comprising: a first transistor that has an emitter connected to a power line, an input current of the current mirror circuit flowing through the first transistor; a second transistor that has an emitter connected to the power line and a base connected to a base of the first transistor, an output current of the current mirror circuit flowing through the second transistor; a resistor that has a first end connected between the bases of the first and second transistors and a second end connected to the power line; a third transistor that has an emitter connected to the base of the first transistor and a base connected to a collector of the first transistor, the third transistor supplying a base current to each of the first and second transistors; and a current compensation circuit that adds a compensation current to the input current flowing through the first transistor, wherein