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:
Dec. 15, 2009
Filed:
Feb. 08, 2008
Ying Tian LI, Singapore, SG;
Yayue Zhang, Singapore, SG;
Ying Tian Li, Singapore, SG;
Yayue Zhang, Singapore, SG;
Marvell International Ltd., Hamilton, BM;
Abstract
Bandgap voltage reference circuitry working under a wide supply range is provided. The bandgap reference circuitry in accordance with the invention may provide an accurate reference voltage for systems with a supply voltage that may range from approximately 1.8V to approximately 5.5V. The circuitry may be designed using a standard process and standard devices without requiring the use of special low-threshold devices or deep N-well processes and may generate an internal regulated supply voltage that may remain at a substantially stable voltage level, in spite of variations in the power supply voltage. The bandgap reference circuitry may further use a voltage clamping structure to reduce leakage currents.