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:
Nov. 12, 2019
Filed:
May. 02, 2018
Applicant:
Analog Devices Global Unlimited Company, Hamilton, BM;
Inventors:
Jonathan Ephraim David Hurwitz, Edinburgh, GB;
Jesus Bonache, Valencia, ES;
Robert Sythes, Portlaoise, IE;
Eamonn J. Byrne, Mungret, IE;
Assignee:
Analog Devices Global Unlimited Company, Hamilton, BM;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/45 (2006.01);
U.S. Cl.
CPC ...
H03F 3/45475 (2013.01); H03F 2200/129 (2013.01); H03F 2200/462 (2013.01); H03F 2203/45526 (2013.01); H03F 2203/45528 (2013.01); H03F 2203/45594 (2013.01);
Abstract
It is often desirable to distinguish between an open circuit condition and a no signal condition. In both cases an input signal may be absent, but only one of these events represents a failure of the equipment. The present disclosure provides a way to use a difference amplifier to check for open circuit events, without requiring additional circuitry at the input of the amplifier.