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:
Sep. 08, 2015
Filed:
Aug. 24, 2011
Ting LI, Nan'an District, CN;
Zhengfan Zhang, Nan'an District, CN;
Mingyuan Xu, Nan'an District, CN;
Yuxin Wang, Nan'an District, CN;
Tao Liu, Nan'an District, CN;
Ting Li, Nan'an District, CN;
Zhengfan Zhang, Nan'an District, CN;
Mingyuan Xu, Nan'an District, CN;
Yuxin Wang, Nan'an District, CN;
Tao Liu, Nan'an District, CN;
China Electronic Technology Corporation, 24th Research Institute, Nan'an District, Chongqing, CN;
Abstract
The present invention pertains to a voltage reference circuit based on temperature compensation, comprising positive and negative temperature coefficient generating units, temperature compensation circuit, image circuit and voltage divider. In this circuit, Item T is compensated with Item T, and Item T ln(T) is compensated by Item T in (T), which features a well-targeted compensation performance. The circuit outputs a reference voltage with zero temperature coefficient, which is independent to T and T ln (T). The output voltage value could be defined by adjusting the ratio of resistance in voltage divider. The invention provides a voltage reference circuit featuring good compensation, zero temperature coefficient and adjustable output voltage. The invention has a better compensation than the conventional one and a fixed output voltage, and it totally eliminates the temperature coefficient. The invention has wide application in analog IC and digital/analog mixed IC.