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:
Nov. 22, 2011
Filed:
Jan. 30, 2009
Applicant:
Masaki Tsukude, Tokyo, JP;
Inventor:
Masaki Tsukude, Tokyo, JP;
Assignee:
Renesas Electronics Corporation, Kawasaki-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01K 7/00 (2006.01); G11C 7/04 (2006.01); H03K 17/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
There is provided a semiconductor device which can maintain a high tuning accuracy while suppressing a cost increase and suppress an increase in the time required for tuning. There are included, in addition to variable resistors configuring a level shift circuit, an additional resistor coupled between the output node of a VBGR voltage of a BGR circuit and one of the variable resistors and an additional resistor coupled between the other of the variable resistors and a reference voltage. N-channel MOS transistors are coupled in parallel with the additional resistors, respectively.