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. 14, 2017
Filed:
May. 19, 2017
Applicant:
Mediatek Inc., Hsin-Chu, TW;
Inventors:
Chihhou Tsai, New Taipei, TW;
Ying-Zu Lin, Taichung, TW;
Assignee:
MEDIATEK INC., Hsin-Chu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/00 (2006.01); H03M 1/12 (2006.01); H03M 1/46 (2006.01);
U.S. Cl.
CPC ...
H03M 1/1245 (2013.01); H03M 1/462 (2013.01);
Abstract
A reference voltage generator for an analog-to-digital converter (ADC) includes a current source coupled to a power supply, and a first transistor coupled between the current source and a first resistive circuit. The first resistive circuit is coupled to the first transistor. The reference voltage generator further includes a second transistor having a gate coupled to the current source and a gate of the first transistor, for providing a reference voltage to the ADC, an impedance circuit coupled to the second transistor, for selectively providing a variable impedance.