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:
Apr. 19, 2011
Filed:
Dec. 23, 2008
Tadashi Matsushima, Tokyo, JP;
Masaru Sugai, Tokyo, JP;
Chung Wen Hung, Taipei, TW;
Yuji Shimizu, Tokyo, JP;
Tadashi Matsushima, Tokyo, JP;
Masaru Sugai, Tokyo, JP;
Chung Wen Hung, Taipei, TW;
Yuji Shimizu, Tokyo, JP;
Renesas Electronics Corporation, Kawasaki-shi, JP;
Abstract
For example, to adjust an offset of a pressure sensor, there are provided an external resistor RE and an internal resistor circuit that is connected to both ends of RE and formed in a semiconductor chip such as a processor. The internal resistor circuit includes N pieces of internal resistors RI connected in series between both ends of RE, and (N+1) pieces of switches selecting one of voltages of respective nodes of the serial resistors and outputs the same as a signal. RE has a high absolute value precision of, e.g., several ten ohms to several hundred ohms, and RI has a high relative value precision of, e.g., several kilo-ohms. Therefore, an offset adjustment range is decided at a high absolute value precision mainly by RE, and with regard to the arrangement resolution, a high precision can be obtained along with the relative value precision of the RI.