Abstract: A current mirror 100 includes a current mirroring transistor 103 having a selected aspect ratio for conducting a mirrored current of a selected mirroring ratio with respect to a reference current. A plurality of reference current transistors 201 are disposed in parallel with current mirroring transistor 103, each of the reference current transistors 201 having a current path coupled to a source 105 of the reference current and a selected aspect ratio. A switch 207 is coupled to a control terminal of a selected reference current transistor 201a, for selectively turning on and turning off a selected reference current transistor 201a to adjust the mirroring ratio.