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:
Dec. 26, 2023
Filed:
May. 31, 2022
Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu, TW;
Chin-Hua Wen, Toufen Township, Miaoli County, TW;
Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu, TW;
Abstract
A post-driver with low voltage operation and electrostatic discharge protection. In one embodiment, a post-driver structure includes a drive unit including a pull-up driver and a pull-down driver, a pad connected to an external resistance, and an output node connected between the pull-up driver and the pull-down driver, the output node configured to connect to a comparator for impedance calibration of the drive unit. The post-driver structure also includes an operational amplifier connected to a first transistor and the pad in a closed loop configuration, the operational amplifier further connected to a second transistor to form a current mirror circuit between the operational amplifier and the drive unit, wherein the current mirror circuit replicates a voltage at the pad with a voltage at the output node for the impedance calibration.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile