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. 17, 2019
Filed:
Sep. 01, 2017
Applicant:
Mediatek Inc., Hsin-Chu, TW;
Inventors:
Sung-Han Wen, Hsin-Chu, TW;
Kuan-Ta Chen, Hsin-Chu, TW;
Assignee:
MediaTek Inc., Hsin-Chu, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 49/02 (2006.01); H01L 29/06 (2006.01); H01L 27/08 (2006.01); H03F 1/32 (2006.01); H03F 3/45 (2006.01);
U.S. Cl.
CPC ...
H01L 28/20 (2013.01); H01L 27/0802 (2013.01); H01L 29/0649 (2013.01); H03F 1/3211 (2013.01); H03F 3/45475 (2013.01); H03F 3/45973 (2013.01); H03F 2203/45424 (2013.01); H03F 2203/45522 (2013.01); H03F 2203/45524 (2013.01);
Abstract
An impedance circuit includes a poly-resistor and a controller. The poly-resistor has a first terminal and a second terminal. The controller generates a first control voltage and a second control voltage. The resistance between the first terminal and the second terminal of the poly-resistor is determined according to the first control voltage and the second control voltage. The second control voltage is different from the first control voltage. The proposed impedance circuit can improve the linearity of the poly-resistor.