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:
Feb. 01, 2022
Filed:
Jun. 02, 2020
Realtek Semiconductor Corporation, Hsinchu, TW;
Leaf Chen, Hsinchu, TW;
REALTEK SEMICONDUCTOR CORPORATION, Hsinchu, TW;
Abstract
Disclosed is a reference voltage generating circuit including a bandgap reference voltage generating circuit, a voltage controlled current source circuit, a current mirror circuit, an input voltage generating circuit, and a voltage controlled voltage source circuit. The bandgap reference voltage generating circuit generates a bandgap reference voltage. The voltage controlled current source circuit generates a reference current according to the bandgap reference voltage. The current mirror circuit generates a mirrored current according to the reference current. The input voltage generating circuit determines an input voltage according to the mirrored current. The voltage controlled voltage source circuit generates a reference voltage according to the input voltage. Accordingly, the reference voltage is generated with voltage-to-current conversion and voltage-to-voltage conversion so that the mirrored current can be accurate without being affected by the reference voltage and the reference voltage itself can be accurate.