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:
Mar. 09, 2021
Filed:
Apr. 25, 2019
Teradyne, Inc., North Reading, MA (US);
Jan Paul Anthonie van der Wagt, Carlsbad, CA (US);
Greg Warwar, Moorpark, CA (US);
Teradyne, Inc., North Reading, MA (US);
Abstract
Disclosed herein are voltage driver circuits and methods of operating the same to provide a variable output voltage that is suitable for use in ATE to provide a large number of test signals with accurate voltage levels at high data rates using components that consume relatively low power. According to an aspect, a change in output current in a voltage driver related to changing output voltage may be offset by a stabilization current generated by a correction driver for the voltage driver, such that supply currents drawn from the supply voltages can remain substantially stable. The correction driver may be connected to one or more supply voltages, and programmed to output a stabilization current that offsets changes in supply currents arising from changing of the programmed output of the voltage driver circuit. Such a driver may enable a test system to more precisely test semiconductor devices.