High voltage input pad system

Details High voltage input pad system High voltage input pad system

1998-05-08

2000-03-14

Leja, Ronald W.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

H02H 900

Patent

active

060381167

ABSTRACT:
A high voltage input pad and method for accepting electrostatic discharge (ESD) surges without damage to an input semiconductor amplifier. The protection system includes a metal gate transistor, and n-well resistors which provide ESD protection. Protection is further provided against large voltages coupled to an amplifier by connecting an input bipolar junction transistor to the negative input connection of the amplifier. Negative surges are directed to ground with an anode grounded diode connected at its cathode to the negative input connection of the amplifier.

REFERENCES:
patent: 4605980 (1986-08-01), Hartranft et al.
patent: 5545909 (1996-08-01), Williams et al.
patent: 5764464 (1998-06-01), Botker et al.

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