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System for providing an integrated circuit with a unique identification

  • US 6,161,213 A
  • Filed: 02/17/1999
  • Issued: 12/12/2000
  • Est. Priority Date: 02/17/1999
  • Status: Expired due to Term
First Claim
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1. An apparatus (ICID) installed on an integrated circuit (IC) for generating an identification number (ID) identifying the IC in which it is installed, the apparatus comprising:

  • a plurality of identification cells formed within said IC, each having an output that is a substantial function of random parametric variations in said IC; and

    measurement means for monitoring the output of said plurality of identification cells and for generating said ID in response thereto, wherein said ID is also a substantial function of random parametric variations in said cells.

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