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:
Aug. 25, 2026
Filed:
Jul. 23, 2024
Realtek Semiconductor Corporation, Hsinchu, TW;
Wei-Cian Hong, Hsinchu, TW;
Realtek Semiconductor Corporation, Hsinchu, TW;
Abstract
A capacitive digital-to-analog converter (CDAC) comprising a capacitive structure and a control logic circuit coupled to each other is provided. The control logic circuit comprises switch groups that each comprises first and second switch circuits. The first and second switch circuits each comprise first, second terminals, a first via and a control terminal. The first terminal is configured to receive a source voltage or a ground voltage through a first metal layer of the CDAC. The second terminal is configured to be coupled to the capacitive structure through the first via extending in a vertical direction. The control terminal is configured to receive one of a plurality of turn-on signals through a second metal layer of the CDAC. The capacitive structure is located at least in a third metal layer of the CDAC. The third metal layer is located above the first and second metal layers.