Patent ID: 6680651
Filing Date: 2004-01-20
Classification: H03F

Abstract:
A current mirror comprising:a current source for supplying a reference current, the current source having a first terminal connected to a first reference voltage and a second terminal; a reference transistor having a control electrode, a first current carrying electrode connected to the second terminal of the current source, and a second current carrying electrode connected to a second reference voltage; an output transistor having a control electrode, a first current carrying electrode connected to an output terminal to which a mirrored current flows, and a second current carrying electrode connected to the second reference voltage; and a proportional-to-absolute temperature (PTAT) voltage generator comprising at most four transistors connected between the control electrode of the reference transistor and the control electrode of the output transistor, for increasing the voltage of the control electrode of the reference transistor to a predetermined voltage and supplying the increased voltage to the control electrode of the output transistor.