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. 13, 2010
Filed:
Jul. 17, 2007
Chen-hui Hsieh, Chu-Pei, TW;
Chen-Hui Hsieh, Chu-Pei, TW;
Taiwan Semiconductor Manufacturing Co., Ltd., Hsin-Chu, TW;
Abstract
A low-voltage sub-bandgap reference circuit is disclosed. In one embodiment, the low-voltage sub-bandgap voltage reference circuit includes a differential amplifier and a first bipolar transistor with its base and collector coupled to an electrical ground. The reference circuit further includes a second bipolar transistor with base and collector coupled to the electrical ground. The reference circuit further includes a DC bias circuit supplying a predetermined voltage output between a high and low voltage terminal, the high voltage terminal being coupled to both collectors of the first and second bipolar transistors and the low voltage terminal being coupled to both bases of the first and second bipolar transistors.