System and method for ESD Protection

  • US 6,445,039 B1
  • Filed: 01/14/2000
  • Issued: 09/03/2002
  • Est. Priority Date: 11/12/1998
  • Status: Expired due to Term
First Claim
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1. An ESD protection system for an integrated circuit that includes a circuit core, a pad ring surrounding the circuit core, and a plurality of bonding pads within the pad ring, the system comprising:

  • a local power supply bus disposed within the circuit core;

    a local ground bus disposed within the circuit core;

    an ESD ground bus disposed within the pad ring;

    a first ESD clamp coupled between said local ground bus and said ESD ground bus for providing a low impedance discharge path between said local ground bus and said ESD ground bus; and

    a second ESD clamp coupled between said local power supply bus and said local ground bus for providing a low impedance discharge path between said local power supply bus and said local ground bus.

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