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. 29, 2012
Filed:
Mar. 30, 2010
Johannes Fellner, Pirka, AT;
Johannes Fellner, Pirka, AT;
austriamicrosystems AG, Unterpremstätten, AU;
Abstract
A circuit arrangement for operating voltage detection has a detection block () and a control block (). Detection block () has a first transistor (P) that is connected between a first supply voltage terminal (VDD) and a first node (K) and has a first control terminal (S), a first resistor element (R) that is connected between first node (K) and second supply voltage terminal (VSS), a second transistor (P) that is connected between first supply voltage terminal (VDD) and a second node (K) and has a second control terminal (S), a second resistor element (R) that is connected between second node (K) and second supply voltage terminal (VSS), a first switch (N) that connects first node (K) to second control terminal (S), and a third resistor element (R) that is connected between second control terminal (S) and first supply voltage terminal (VDD). Control block (K) is set up to derive a first switching signal as a function of a voltage at second node (K), as well as a second switching signal by inverting the first switching signal. The first switching signal is supplied to first switch (N), and the second switching signal to first control terminal (S).