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:
Mar. 15, 2016
Filed:
Oct. 14, 2014
Powerchip Technology Corporation, Hsin-Chu, TW;
Teruaki Maeda, Hsin-Chu, TW;
Nobuhiko Ito, Hsin-Chu, TW;
POWERCHIP TECHNOLOGY CORPORATION, Hsin-Chu, TW;
Abstract
A negative reference voltage generating circuit includes a clamp-type reference voltage circuit and a differential amplifier. The clamp-type reference voltage circuit is connected between a node of a first negative voltage which is equal to or lower than the ground voltage and a node of a second negative voltage which is lower than the first negative voltage, and is formed by connecting a first circuit and a second circuit in parallel. The differential amplifier amplifies the difference between a node voltage in the first circuit and a node voltage in the second circuit, and outputs a negative reference voltage.