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. 03, 2015
Filed:
Mar. 31, 2010
Hiroshi Yaguma, Kyoto, JP;
Motoya Kumagai, Kyoto, JP;
Takashi Nagai, Kyoto, JP;
Sukenori Itou, Kyoto, JP;
Hiroshi Yaguma, Kyoto, JP;
Motoya Kumagai, Kyoto, JP;
Takashi Nagai, Kyoto, JP;
Sukenori Itou, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
A voltage amplifier circuit () comprises: an input voltage generating unit () that generates an input voltage (VL) based on a set value (SL); an operational amplifier () that amplifies the input voltage (VL) such that the input voltage (VL) becomes equal to a feedback voltage (VL), thereby generating an output voltage (VL); a feedback resistor unit () that performs a voltage division between the output voltage (VL) applied to one end of the feedback resistor unit and a reference voltage (VL) applied to the other end of the feedback resistor unit, thereby generating the feedback voltage (VL); a selector control unit () that generates a selector control signal (SS) based on the set value (SL); and a selector () that selects, based on the selector control signal SS, the reference voltage (VL) from a plurality of candidates (GND/VR).