Low noise electrostatic discharge protection circuit for mixed s

Details Low noise electrostatic discharge protection circuit for mixed s Low noise electrostatic discharge protection circuit for mixed s

1998-07-31

2000-08-15

Jackson, Stephen W.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Transient responsive

361 56, 361 58, 361118, H02H 300

Patent

active

061045888

ABSTRACT:
An electrostatic discharge (ESD) protection circuit includes circuitry for providing protection against ESD events which occur either within an ESD pad ring (intra-ring) or between different ESD pad rings (inter-ring). Self-triggering voltage clamp circuits or back-to-back diode circuits can be used to properly interconnect the positive polarity rails and the negative polarity rails of the ESD pad rings. Self-triggering voltage clamp circuits are advantageous in that they provide improved ac signal isolation (i.e. reduced noise coupling between the ESD pad rings, and thus reduced noise coupling from the digital I/O pads to the analog I/O pads).

REFERENCES:
patent: 5301084 (1994-04-01), Miller

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