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:
May. 13, 2014
Filed:
Sep. 05, 2012
Applicant:
Hideki Oku, Isehara, JP;
Inventor:
Hideki Oku, Isehara, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/00 (2006.01); H03M 1/74 (2006.01);
U.S. Cl.
CPC ...
H03M 1/745 (2013.01); H03M 1/742 (2013.01);
Abstract
There is provided a digital-to-analog converter including: a mirror circuit including a first transistor to copy a reference current at a predetermined mirror ratio, and a second transistor cascade coupled with the first transistor; and an analog switch coupled with a gate of the second transistor, the analog switch being configured to be controlled, by a digital signal input from outside, so as to be turned on or off.