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. 09, 2003
Filed:
Jul. 08, 2002
Applicant:
Inventor:
Troy Gilliland, New Castle, WA (US);
Assignee:
Impinj, Inc., Seattle, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 1/10 ;
U.S. Cl.
CPC ...
G05F 1/10 ;
Abstract
A switch element of a charge pump circuit includes (1) an NMOS transistor controlled by a first clock signal coupled between a first node and a first fixed voltage level, (2) a first PMOS well transistor controlled by a second clock signal coupled between the first node and a voltage output node, and (3) a second PMOS well transistor controlled by the first node and coupled between a voltage input node and the voltage output node. The wells of both the first and second PMOS well transistors are coupled to the voltage output node to provide reverse isolation.