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:
Jul. 15, 2025
Filed:
Mar. 11, 2024
Lapis Technology Co., Ltd., Yokohama, JP;
Hiroshi Tsuchi, Yokohama, JP;
LAPIS Technology Co., Ltd., Yokohama, JP;
Abstract
The disclosure includes a differential amplifier and a first decoder that distributes and supplies a first or a second voltage to each of a plurality of input terminals based on digital data. The differential amplifier includes a Kth-power of 2 pieces of differential pairs each driven by an individually received tail current, and a tail current control circuit that individually supplies the tail current to the Kth-power of 2 pieces of the differential pairs. The tail current control circuit sets a current ratio of the tail current flowing through of two respective differential pairs among the Kth-power of 2 pieces of the differential pairs to be larger than a current ratio of the tail current flowing through other respective differential pairs excluding the two differential pairs.