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:
Jul. 30, 2013
Filed:
Sep. 07, 2011
Kazuo Koyama, Tokyo, JP;
Kazuo Koyama, Tokyo, JP;
Asahi Kasei Microdevices Corporation, Tokyo, JP;
Abstract
There is provided a single-differential converting circuit that can reduce the variations in the input voltage of an operational amplifier sufficiently, made by changes in the voltages input from the exterior, while maintaining the function as the amplifier. The single-differential converting circuit is configured to include: an operational amplifierprovided with an inverting input terminaland a noninverting input terminal, for respectively receiving an input signal and a signal indicative of a reference voltage, a noninverting output terminaland an inverting output terminalhaving opposite polarities to each other; and a positive feedback impedance elementconnected between one of the two input terminals and one, of the output terminals, having a same polarity with the above one of the two input terminals.