Patent ID: 6924693

Claim:
A current source self-biasing circuit, comprising: a current mirror circuit configured to sense a first current being presented at a first node and provide a second current to a second node; a current controlling transistor having a current carrying terminal coupled to the first node and configured to modify current in response to a gating voltage; a first resistive load coupled to receive current passed drain-to-source through the current controlling transistor, the first resistive load coupled to a third node; and a second resistive load configured to receive the second current, the second resistive load comprising a nonlinear current density device, the nonlinear current density device having a gate and a source region, the gate and source region being separated by a dielectric capable of conducting a tunneling current, the source region being coupled to the third node, the gate coupled to the second node in order to receive the second current, a drain region of the nonlinear current density device being coupled to the source region via the third node.