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Circuit for electrostatic discharge protection

  • US 20050231878A1
  • Filed: 03/22/2002
  • Published: 10/20/2005
  • Est. Priority Date: 03/22/2002
  • Status: Active Grant
First Claim
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1. A circuit providing protection against electrostatic discharge (ESD) for internal elements of an Integrated Circuit (IC), the circuit being connected to a power rail and a ground rail and to an inverter of a clamp preamplifier, said circuit comprises:

  • a PMOSFET resistor with a gate connected to said ground rail, a drain connected to said inverter'"'"'s input node, a source and a bulk connected to said power rail, an NMOSFET capacitor with a gate connected to said inverter'"'"'s input node, a drain, a source and a bulk connected to said ground rail, and a PMOSFET capacitor with a gate connected to said inverter'"'"'s input node, a, drain, a source connected to said ground rail and a bulk connected to said power rail.

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