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Current source self-biasing circuit and method

  • US 6,924,693 B1
  • Filed: 08/12/2002
  • Issued: 08/02/2005
  • Est. Priority Date: 08/12/2002
  • Status: Expired due to Term
First Claim
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1. 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.

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