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. 03, 2013
Filed:
Mar. 11, 2011
Ludmil Nikolov, Chippenham, GB;
Carlos Calisto, Swinden, GB;
Ludmil Nikolov, Chippenham, GB;
Carlos Calisto, Swinden, GB;
Dialog Semiconductor GmbH., Kirchheim/Teck-Nabern, DE;
Abstract
A self-biased reference circuit device () includes a first cascode current mirror (), a second cascode current mirror (), and a startup circuit (). The first cascode current mirror () is capable to generate a first bias voltage () and a second bias voltage () in response to a first current and to generate a second current in response to the first and second bias voltages. The second cascode current mirror () is capable to generate a third bias voltage () in response to the second current, to generate a fourth bias voltage () in response to a third current, and to generate the first current in response to the third and fourth bias voltages. The startup circuit includes a first switch () and a second switch (). The first switch () is capable to connect the first bias voltage () and fourth bias voltage () during startup. The second switch () is capable to connect the third bias voltage () and an inner drain-source connection () in the output stage of the first cascode current mirror () during startup.