Input and output noise reduction circuit

Details Input and output noise reduction circuit Input and output noise reduction circuit

1997-03-27

1999-03-02

Gaffin, Jeffrey

Electricity: electrical systems and devices

Safety and protection of systems and devices

Transient responsive

361 56, 361127, H02H 300

Patent

active

058779302

ABSTRACT:
A circuit for limiting voltage transient excursions on a power supply node is disclosed. The circuit includes a first field effect transistor dispose to provide a capacitance and having source and drain electrodes coupled to said external supply node path and having a gate electrode and first and second clamp transistors. A resistance is coupled between the gate electrode of said first transistor and the internal supply return node and to gate electrodes of the clamp transistors. The circuit also include process resistances between internal and external supply connection to provide a charge transfer path between external and internal supply nodes and external and internal return nodes.

REFERENCES:
patent: 4454529 (1984-06-01), Philofsky
patent: 4947228 (1990-08-01), Gabara

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