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:
May. 26, 2020
Filed:
Mar. 14, 2019
Asahi Kasei Microdevices Corporation, Tokyo, JP;
Asahi Kasei Microdevices Corporation, Tokyo, JP;
Abstract
To reduce distortion of output analog signals generated at a current-output DA converter. A DA converter that outputs a differential analog signal corresponding to an input digital signal is provided, including: a current output unit outputting a current corresponding to the digital signal to each of first and second wires; a converting unit outputting, as positive-side and negative-side analog signals, voltage signals based on currents flowing through the first and second wires, respectively; a first noise reducing unit having: a first switch switched to be or not to be electrically connected with the first wire; and a first buffer provided between the first switch and a reference potential; and a second noise reducing unit having: a second switch switched to be or not to be electrically connected with the second wire; and a second buffer provided between the second switch and the reference potential.