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. 20, 2011
Filed:
Jul. 09, 2008
Applicants:
Heiji Ikoma, Nara, JP;
Junji Nakatsuka, Osake, JP;
Inventors:
Heiji Ikoma, Nara, JP;
Junji Nakatsuka, Osake, JP;
Assignee:
Panasonic Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/66 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a D/A converter that has a plurality of current sources (IS, ISand IS-to IS-) each including a transistor, and is for converting an input digital signal into an analog signal by selecting paths of currents output from the current sources (IS, ISand IS-to IS-), depending on the digital signal, a forward body bias voltage is applied to a back-gate terminal of the transistor included in each current source (IS, ISand IS-to IS-).