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. 17, 2009
Filed:
Jul. 23, 2007
An-chung Chen, Zhu-Bei, TW;
Hung-cheng Huang, Taipei, TW;
Wen-lung Cheng, Taipei, TW;
Ming-tse Lin, SanChong, TW;
An-Chung Chen, Zhu-Bei, TW;
Hung-Cheng Huang, Taipei, TW;
Wen-Lung Cheng, Taipei, TW;
Ming-Tse Lin, SanChong, TW;
NVIDIA Corporation, Santa Clara, CA (US);
Abstract
A bandgap reference circuit having a low sensitivity to temperature and supplied voltage installs a compensation circuit on a bandgap reference circuit to substitute a prior art that uses a resistor to match the circuit startup purpose and solve the problem of startup error caused by the manufacturing error. The bandgap reference circuit includes a first amplifier, a second amplifier, and a reference circuit having a plurality of transistors and a plurality of bipolar junction transistors, and the bandgap reference circuit is electrically connected to a same supplied power of which the reference circuit is electrically connected and also includes a plurality of transistors and a compensation circuit of the second amplifier, so as to output a stable startup voltage which has a low sensitivity to the change of temperature and the change of supplied voltage.