Patent ID: 8026757
Filing Date: 2011-09-27
Classification: G05F

Abstract:
1. A method, comprising: controlling a current mirror circuit having a first current mirror including first and second mirror transistors sharing a common control terminal, said first mirror transistor having a conduction terminal for receiving, during a first operating condition, a first reference current, and said second mirror transistor having a respective conduction terminal for providing, during said first operating condition, a mirrored current based on said first reference current, the controlling including: connecting said control terminal to said conduction terminal of said first mirror transistor during said first operating condition, disconnecting said control terminal from said conduction terminal of said first mirror transistor during a second operating condition, different from said first operating condition; and connecting said control terminal to a reference voltage, during said second operating condition, by connecting said control terminal to a mirrored branch of a second current mirror having a reference branch for receiving a second reference current; said second reference current having a value that is smaller than a value of said first reference current.