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. 19, 2025
Filed:
Jun. 19, 2023
Analog Devices, Inc., Wilmington, MA (US);
Christopher C. Mcquilkin, Hollis, NH (US);
Analog Devices, Inc., Wilmington, MA (US);
Abstract
A test system can provide a test signal to, or receive a test signal from, a device under test (DUT) via a first signal path. The test system can be configured to present a stable (e.g., 50 ohm) impedance at the DUT interface. In an example, the stable impedance comprises a physical polysilicon resistor in series with an output stage of a driver circuit of the test system. The impedance of the output stage can be a function of an incremental impedance of transistors in a push-pull output circuit. In an example, a control loop is provided to change a bias condition for the transistors to adjust the impedance of the output stage.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile