ultra low current mirror

Discussion in 'The Projects Forum' started by tamchung, Jun 11, 2009.

  1. tamchung

    Thread Starter New Member

    Apr 5, 2009
    Does anyone have any idea how to build this circuit by using MOSFET or any approximate devices ? a current range is 100 μA to 2μA. Most of current mirror circuits that i found on the internet work in the range of mA. Thanks
  2. mik3

    Senior Member

    Feb 4, 2008
    It is not a good idea to build a current mirror from discrete components because the transistors are not very close matched. It is better you use an emitter follower circuit.