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. 23, 2025
Filed:
Aug. 21, 2023
Teradyne, Inc., North Reading, MA (US);
Douglas W. Pounds, Goffstown, NH (US);
Teradyne, Inc., North Reading, MA (US);
Abstract
Example circuitry is usable in testing a device under test (DUT). The circuitry includes test inputs; a resistor ladder including resistors electrically connected in series, with the resistor ladder being electrically connected to each of the test inputs; and first operational amplifiers, with each first operational amplifier including a first input and a first output, with each first input being electrically connected to the resistor ladder, and with each first output to electrically connect to the DUT. The circuitry includes floating circuitry which includes a second operational amplifier. The second operational amplifier includes a second input electrically connected to the resistor ladder and a reference input; a first power input to receive a first voltage; and a second power input to receive a second voltage. The floating circuitry is configured to apply the first voltage and the second voltage to power inputs of each of the first operational amplifiers.