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:
Jun. 30, 2015
Filed:
Dec. 04, 2012
Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu, TW;
Dipankar Nag, Hsinchu, TW;
Chewn-Pu Jou, Hsinchu, TW;
Abstract
A reference voltage generator is described. The reference voltage generator includes a proportional to absolute temperature (PTAT) current source, the PTAT current source being capable of providing a first current that is proportional to a temperature. The reference voltage generator further includes a current mirror comprising a first transistor and a second transistor, the current mirror configured to generate a second current proportional to the first current, wherein a ratio of the first current to the second current is equal to a ratio of a gate width of the first transistor to a gate width of the second transistor. The reference voltage generator further includes a voltage divider, the voltage divider being capable of receiving the second current, the voltage divider capable of outputting a reference voltage, the reference voltage being substantially independent from a change of the temperature.