Patent ID: 6426614
Filing Date: 2002-07-30
Classification: G05F

Abstract:
A current mirror having an output current, comprising:a biasing network that generates a substantially constant voltage on a first biasing network output; a control signal having a first state and a second state; a first transistor having a control terminal, a first current-carrying terminal, and a second current-carrying terminal, wherein the first current-carrying terminal generates the output current of the current mirror, and the second current-carrying terminal is coupled to a first potential; a control switch coupled between the first biasing network output and the control terminal of the first transistor, and also coupled to the control signal, wherein the control switch couples the first biasing network output to the control terminal of the first transistor when the control signal is in the first state; and a first boot-strapping circuit coupled between the control terminal of the first transistor and a second potential, and also coupled to the control signal, wherein the first boot-strapping circuit injects the second potential onto the control terminal of the first transistor when the control signal transitions from the second state to the first state in order to decrease the turn-on time of the first transistor.