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:
Jun. 14, 2005
Filed:
Apr. 09, 2003
Masayuki Uno, Ina, JP;
Masayuki Uno, Ina, JP;
Linear Cell Design Co., Ltd., Nagano-Ken, JP;
Abstract
D/A converter of this invention including n+1 capacitors in total consisting of one terminating capacitor (C) and n binary-weighted capacitors (C) that are subjected to binary weighting ratio of 1:2:4: . . . :2, and, an inverting amplifier (INV), further comprising: a feedback switching means (SWR) provided between the input and output of the inverting amplifier (INV); a switching means for terminating operation (SWR) supplies one of two main reference voltages (VB,VT) to the terminating capacitor (C), and then, makes connection of the terminating capacitor (C) to the output of the inverting amplifier (INV); a plurality of switching means for input operation (SWD,SWR) makes selection of one of the two main reference voltages (VB,VT) to be provided for the n binary-weighted capacitors (C) depending on digital data (D), and then, makes connection of the second terminal side of the n binary-weighted capacitors (C) to the output of the inverting amplifier (INV).