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. 03, 2013
Filed:
Jun. 15, 2011
Hongquan Sun, Shenzhen, CN;
Hongquan Sun, Shenzhen, CN;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
A low-voltage source bandgap reference voltage circuit is provided. In the circuit, a differential amplification module () is configured to provide negative feedback in a differential input manner, and has one input end connected to a bandgap core module (), and the other input end connected to an output end of a mirror current module () and then connected to the bandgap core module (); the mirror current module () is configured to provide a mirror current for the bandgap core module (); the bandgap core module () is configured to provide a voltage for counteracting positive and negative temperature coefficients; and a starting module () is configured to start the low-voltage source bandgap reference voltage circuit, and has one input end connected to an output end of the differential amplification module (), the other input end connected to a power supply (Vcc), and an output end connected to an output end of the bandgap core module () and then grounded. Therefore, the design of the starting circuit is simplified, the weak current conduction state is effectively prevented, and the startup risk is reduced.