Patent ID: 7113044
Filing Date: 2006-09-26
Classification: G05F

Abstract:
1. A current mirror circuit comprising: (a) an error amplifier amplifying a voltage difference between drains of first and second transistors of a first current mirror, wherein a drain current of the first transistor is provided as an input current to the current mirror circuit; (b) an output of the error amplifier coupled to gates of the first and second transistors; (c) a compensation capacitor coupled between a gate and drain of the first transistor; (d) a cascode transistor having a source coupled to a drain of the second transistor; and (e) a second current mirror having an input receiving a drain current of the cascode transistor and including an output transistor which provides a current that is proportional to the input current as a bias current for the error amplifier to provide an output current of the current mirror circuit and to provide stable operation thereof.