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. 22, 2011
Filed:
Aug. 21, 2008
Takashi Morie, Osaka, JP;
Kazuo Matsukawa, Osaka, JP;
Shiro Sakiyama, Kyoto, JP;
Shiro Dosho, Osaka, JP;
Yusuke Tokunaga, Hyogo, JP;
Takashi Morie, Osaka, JP;
Kazuo Matsukawa, Osaka, JP;
Shiro Sakiyama, Kyoto, JP;
Shiro Dosho, Osaka, JP;
Yusuke Tokunaga, Hyogo, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A pipelined AD converter () includes a plurality of conversion stages (, . . . ). In each of the conversion stages, an analog-to-digital conversion circuit () converts an input voltage (Vin) from the preceding stage to a digital code (Dout). A digital-to-analog conversion circuit () converts the digital code obtained by the analog-to-digital conversion circuit to an intermediate voltage (Vda). A charge operation circuit () has: a capacitor section (C, C) for sampling the input voltage; and an amplifier section () for amplifying a mixed voltage of the input voltage sampled by the capacitor section and the intermediate voltage obtained by the digital-to-analog conversion circuit. The amplifier section () includes a plurality of op-amps (amp, amp, . . . ) having the same configuration and connected in parallel with each other.