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. 14, 2019
Filed:
Jun. 22, 2016
Applicant:
Semiconductor Energy Laboratory Co., Ltd., Atsugi-shi, Kanagawa-ken, JP;
Inventor:
Masashi Fujita, Tokyo, JP;
Assignee:
Semiconductor Energy Laboratory Co., Ltd., Atsugi-shi, Kanagawa-ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/66 (2006.01); H01L 23/50 (2006.01); H01L 29/786 (2006.01); H01L 27/12 (2006.01); H03M 1/00 (2006.01); H03M 1/74 (2006.01);
U.S. Cl.
CPC ...
H01L 23/50 (2013.01); H01L 27/1214 (2013.01); H01L 27/1255 (2013.01); H01L 29/7869 (2013.01); H03M 1/002 (2013.01); H03M 1/745 (2013.01);
Abstract
A semiconductor device with low power consumption is provided. The semiconductor device can serve as a current output DA converter. The semiconductor device converts a current corresponding to a digital signal into a voltage and then holds the voltage, which allows output of the analog voltage even after stopping supply of the current. A plurality of circuits that converts a current into a voltage is provided, whereby a settling time for changing the analog output voltage is reduced.