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. 11, 2025
Filed:
Apr. 09, 2024
Lapis Technology Co., Ltd., Yokohama, JP;
Hiroshi Tsuchi, Yokohama, JP;
LAPIS Technology Co., Ltd., Yokohama, JP;
Abstract
A digital-to-analog converter for effectively performing offset cancellation driving to reduce output variations includes: a decoder receiving a K-bit digital data signal and first and second voltages and generating 2voltages each indicating the first or second voltage according to the digital data signal; and a differential amplifier outputting an output voltage having one of 2voltage levels obtained by dividing the voltage between the first and second voltages into 2voltage levels. The differential amplifier includes a MUX receiving 2voltages, 2differential pairs, and an amplification stage to which outputs of the 2differential pairs are supplied. The MUX performs voltage supply to input terminals of each differential pair to actively cause that, in each differential pair, the input voltage to one input terminal in a first state differs from the input voltage to the other input terminal in a subsequent second state.