The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 28, 2005
Filed:
Sep. 22, 2003
Minoru Okamoto, Osaka, JP;
Minoru Okamoto, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A semiconductor integrated circuit including a digital circuit and an analog circuit which are integrated on a single semiconductor chip comprises a first electrostatic destruction protection circuit, connected to a digital circuit, for protecting the digital circuit from destruction caused by ESD therein by an influence of an input digital signal and a second electrostatic destruction protection circuit, connected to an analog circuit, for protecting the analog circuit from destruction caused by ESD therein by an influence of an input analog signal. A first grounding conductor connected to the first electrostatic destruction protection circuit and a second grounding conductor connected to the second electrostatic destruction protection circuit are connected to each other outside the semiconductor integrated circuit.