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:
May. 21, 2002
Filed:
Feb. 03, 2000
Morteza Vadipour, Woodland Hills, CA (US);
Teradyne, Inc., Boston, MA (US);
Abstract
A common-mode detection circuit for measuring a common-mode signal between two complementary signals is disclosed. The common-mode detection circuit includes a first signal divider circuit and a linearizer. The signal divider circuit includes a pair of impedances coupled to define a measurement node and respective first and second inputs. The divider further includes a pair of active buffer amplifiers having respective first and seconds outputs for coupling to the signal divider first and second inputs. The linearizer includes respective first and second inputs cross-coupled to the respective second and first buffer amplifier outputs and is operative to maintain both of the buffer amplifiers in a relatively constant operational state.