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:
Jan. 13, 2026
Filed:
Sep. 19, 2023
Lapis Technology Co., Ltd., Yokohama, JP;
Hiroshi Tsuchi, Yokohama, JP;
LAPIS Technology Co., Ltd., Yokohama, JP;
Abstract
A digital-to-analog conversion circuit includes a differential amplifier outputting 2voltage levels dividing first and second voltages and a decoder distributing and supplying one of first and second voltages to a plurality of input terminals of the differential amplifier on the basis of digital data of N bits, and the differential amplifier includes 2differential pairs including an inverting input terminal to which an output voltage is commonly input and a non-inverting input terminal to which one of voltages received by the plurality of input terminals is input and having output pairs commonly connected with each other and a tail current control circuit individually controlling current ratios of tail currents supplied to the differential pairs on the basis of a predetermined bit of digital data, in which N is equal to or greater than 3, and K is a positive number less than N.