Patent ID: 6407620
Filing Date: 2002-06-18
Classification: G05F

Abstract:
A current mirror circuit comprising:a first current mirror circuit and a second current mirror circuit, and further comprising; a first transistor of a first conductive type, wherein a collector is connected to a reference current source and a base is commonly connected; a second transistor of the first type, wherein an emitter and a base of the second transistor of the first conductive type are respectively connected between the base and the collector of said first transistor, and a terminal on said first reference current side of the current mirror circuit is connected to a collector of said second transistor; third and fourth transistors of the first conductive type, wherein a collector of said third transistor of the first conductive type, which has a base commonly connected to the base of said first transistor, is connected to an emitter of said fourth transistor of the first conductive type, and an emitter of said first transistor is connected to an emitter of said third transistor; a fifth transistor, said fifth transistor of a second type, wherein a base of said fifth transistor of a second conductive type is connected to the collector of said first transistor, an emitter of said fifth transistor is connected to a base of said fourth transistor and a terminal on an output side of said first current mirror circuit, wherein a collector of said fifth transistor is connected to a terminal of a reference current side of said second current mirror circuit, and a terminal on an output side of said second current mirror circuit is connected to a collector of said fourth transistor, whereby an output current is obtained from the connection point.