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. 20, 2018
Filed:
Oct. 14, 2016
Rohm Co., Ltd., Ukyo-Ku, Kyoto, JP;
Sachito Horiuchi, Kyoto, JP;
Naohiro Nomura, Kyoto, JP;
ROHM CO., LTD., Ukyo-ku, Kyoto, JP;
Abstract
A main amplifier generates an output signal Saccording to a difference between first and second voltages VP and VN. A first gm amplifier is arranged as a differential input stage. A second, fully differential, gm amplifier amplifies a voltage difference between its non-inverting and inverting input terminals, and outputs a differential current signal I/Ivia its inverting and non-inverting output terminals. An integrator integrates a differential input current I/Iinput via its non-inverting and inverting input terminals, and samples and holds the signal every predetermined period, to generate a differential voltage signal. A first selector is arranged as an upstream stage of the second gm amplifier, and outputs the differential input signal without change or otherwise after swapping. A second selector is arranged as a downstream stage of the second gm amplifier, and outputs the signal I/Ioutput from the second gm amplifier without change or otherwise after swapping.