Patent ID: 7893756

Claim:
A device for providing a precision current, comprising: a first operational amplifier configured to output a gate voltage based on a reference voltage based on a reference current and an input voltage; a plurality of path transistors having a corresponding plurality of gates connected to the first operational amplifier to receive the gate voltage, each path transistor being connected to a first enable transistor configured to selectively connect the path transistor to a reference path and a second enable transistor configured to selectively connect the path transistor to an output path, the first and second enable transistors being separately enabled by first and second enable signals, respectively, wherein at least one path transistor of the plurality of path transistors is connected to the reference path through a corresponding first enable transistor to provide the reference current, and wherein at least one other path transistor of the plurality of path transistors is connected to the output path through a corresponding second enable transistor to provide the precision current based on the reference current.