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:
Nov. 09, 2010
Filed:
Sep. 19, 2008
Masaya Suzuki, Iwata, JP;
Yasuomi Tanaka, Hamamatsu, JP;
Nobuaki Tsuji, Hamamatsu, JP;
Hirotaka Kawai, Hamamatsu, JP;
Masaya Suzuki, Iwata, JP;
Yasuomi Tanaka, Hamamatsu, JP;
Nobuaki Tsuji, Hamamatsu, JP;
Hirotaka Kawai, Hamamatsu, JP;
Yamaha Corporation, Hamamatsu-shi, JP;
Abstract
A comparator has P-channel field effect transistors that are supplied at respective gates with input voltages Vin and Vref, which are objects of comparison, and that act as a differential transistor pair; and N-channel field effect transistors that serve as current channels for respective drain currents of these two P-channel field effect transistors and that act as a current mirror circuit. The comparator outputs a drain voltage Vx of an N-channel field effect transistor as a signal showing a result of comparison between the two input voltages. An N-channel field effect transistor diode-connected to the comparator is interposed between drains of the N-channel field effect transistors.