Negative feedback amplifier with electrostatic discharge...

Details Negative feedback amplifier with electrostatic discharge... Negative feedback amplifier with electrostatic discharge...

2005-05-31

2005-05-31

Mottola, Steven J. (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including protection means

C330S110000

Reexamination Certificate

active

06900698

ABSTRACT:
A negative feedback amplifier which alleviates reduction in band width and effectively protects an amplifier from electrostatic discharge (ESD). A node is provided at the midpoint of a feedback resistor connected between an output terminal and an input terminal of an amplifier. Each of ESD protective diodes are connected between the node and respective power terminals. ESD threshold voltage and band width vary in accordance with the resistance of a resistor between the input terminal and the node. Setting the resistance of the resistor at 10 to 100Ω makes it possible to secure the necessary ESD threshold voltage while hardly reducing band width.

REFERENCES:
patent: 6204715 (2001-03-01), Sellnau et al.
patent: 2003/0102923 (2003-06-01), Vickram et al.
patent: 1-162922 (1989-11-01), None
patent: 08-162858 (1996-06-01), None
patent: 2001-110993 (2001-04-01), None

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