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:
Dec. 06, 2016
Filed:
Sep. 03, 2013
Applicant:
Conexant Systems, Inc., Irvine, CA (US);
Inventors:
Christian Larsen, Irvine, CA (US);
Lorenzo Crespi, Costa Mesa, CA (US);
Assignee:
CONEXANT SYSTEMS, INC., Irvine, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 17/18 (2006.01); H01L 27/02 (2006.01); H03F 1/30 (2006.01); H03F 3/181 (2006.01); H03G 3/34 (2006.01); H03K 17/687 (2006.01); H03K 17/16 (2006.01);
U.S. Cl.
CPC ...
H03K 17/161 (2013.01); H01L 27/0281 (2013.01); H03F 1/305 (2013.01); H03F 3/181 (2013.01); H03G 3/348 (2013.01); H03K 17/6871 (2013.01); H03F 2200/03 (2013.01); H03F 2200/249 (2013.01); H03F 2200/411 (2013.01); H03F 2200/414 (2013.01); H03F 2200/417 (2013.01); H03K 2217/0018 (2013.01);
Abstract
A grounding switch is described which operates properly even in the presence of negative voltages on a signal line. The grounding switch uses isolated field effect transistors that have their substrates tied to different voltages. The isolated field effect transistor has a gate voltage and substrate voltage which can be pulled down to a negative voltage when the signal line has a negative voltage allowing the switch to remain open even with a negative voltage.