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:
Sep. 02, 2014
Filed:
Mar. 11, 2013
Analog Devices Technology, Hamilton, BM;
Finbarr O'Leary, Edinburgh, GB;
Michael Edward Bradley, Limerick, IE;
Naiqian Ren, Limerick, IE;
George R. Spalding, Edinburgh, GB;
Nigel David Brooke, Ballina, IE;
Analog Devices Technology, Hamilton, BM;
Abstract
A ping pong comparator voltage monitoring circuit which includes first and second comparators having inputs connected to a voltage Vin to be monitored, and second inputs connected to first and second nodes, respectively. A multiplexer alternately couples the first and second comparator outputs to an output in response to a periodic control signal. A ground-referenced voltage Vrefis provided at a third node and a voltage Vrefreferenced to Vrefis at a fourth node. A hysteresis hystis switchably connected between the third and first nodes, and a hysteresis hystis switchably connected between the fourth and second nodes. Hystand hystare switched in when the mux output toggles due to a rising Vin, and are switched out when the mux output toggles due to a falling Vin.