Patent ID: 7463014

Claim:
current supply, comprising: a current mirror input stage adapted to be connected to a constant current source providing a reference current the current mirror input stage including, a first transistor having first and second terminals and a control terminal, and a control transistor connected between the control terminal of the first transistor and the second terminal of the first transistor; a current mirror output stage substantially mirroring the reference current of the current mirror input stage, the current mirror output stage including a second transistor having first and second terminals and a control terminal, the control terminal being connected to the control terminal of the first transistor and the first terminal being connected to the first terminal of the first transistor; a dummy current mirror output stage substantially mirroring the reference current of the current mirror input stage, the dummy current mirror output stage including, a model load, and a third transistor having first and second terminals and a control terminal, the control terminal being connected to the control terminal of the first transistor, the first terminal being connected to the first terminal of the first transistor, and the second terminal being connected to the model load; and a difference amplifier having a first input connected to the second terminal of the first transistor, a second input connected to the second terminal of the third transistor, and an output connected to a control terminal of the control transistor.