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:
Feb. 27, 2001
Filed:
Jun. 24, 1998
Richard P. Davis, Beverly, MA (US);
Jiann-Neng Chen, Weston, MA (US);
Teradyne, Inc., Boston, MA (US);
Abstract
A tester that is capable of performing voltage measurements on electronic circuits is disclosed. The tester includes voltage measurement circuitry with an input, a plurality of gain stages, and switching circuitry coupled between the input and the gain stages. The switching circuitry includes a plurality of diodes, and a portion of the gain stages includes current-to-voltage converters. Each diode is coupled to a respective current-to-voltage converter. By applying different bias voltages to the respective current-to-voltage converters, the diodes can be made to conduct current for different ranges of voltages at the input. The output of each current-to-voltage converter is proportional to a respective voltage range.