Electrostatic discharge protection oscillation circuit in LSI

Details Electrostatic discharge protection oscillation circuit in LSI Electrostatic discharge protection oscillation circuit in LSI

2011-05-10

2011-05-10

Chang, Joseph (Department: 2817)

Oscillators

Solid state active element oscillator

Transistors

C331S158000, C331S062000

Reexamination Certificate

active

07940138

ABSTRACT:
An oscillation circuit according to the present invention comprises a solid-state oscillator, an amplifier for feedback-controlling the solid-state oscillator, and ESD protecting circuits respectively connected to the input and output sides of the amplifier, wherein the ESD protecting circuit on the input side of the amplifier comprises an ESD protecting element whose constituent is a diode having a P-type diffusion layer and an N-type diffusion layer, and the ESD protecting circuit on the output side of the amplifier comprises an ESD protecting element whose constituent is an MOS transistor.

REFERENCES:
patent: 5929715 (1999-07-01), Nakamiya et al.
patent: 6147564 (2000-11-01), Nakamiya et al.
patent: 6320473 (2001-11-01), Leuschner
patent: 6933797 (2005-08-01), Miyahara et al.
patent: 7195958 (2007-03-01), Huang et al.
patent: 2002/0070817 (2002-06-01), Nakamiya et al.
patent: 2006/0214740 (2006-09-01), Sheng
patent: 2007/0133137 (2007-06-01), Dornbusch
patent: 09-148845 (1997-06-01), None

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