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:
Jul. 02, 2013
Filed:
Apr. 21, 2010
Chan-hong Chern, Palo Alto, CA (US);
Steven Swei, Fremont, CA (US);
Chan-Hong Chern, Palo Alto, CA (US);
Steven Swei, Fremont, CA (US);
Abstract
Mechanisms for providing linear relationship between temperatures and digital codes are disclosed. In one method, at a particular temperature, a circuit in the sensor provides a temperature dependent reference voltage, and a compared voltage, to a comparator. The temperature dependent reference voltage depends on temperature in complement to absolute temperature or alternatively depends on temperature in proportion to absolute temperature. The compared voltage is generated corresponding to digital analog converter (DAC) codes as inputs. Another circuit varies the DAC codes until the temperature dependent reference voltage and the compared voltage are equal so that the dependent reference voltage corresponds to a DAC code. The various temperatures experienced by the temperature sensing circuit and the DAC codes are substantially linearly related.