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:
Mar. 26, 2013
Filed:
Nov. 14, 2008
Pramod Singnurkar, Graz, AT;
Pramod Singnurkar, Graz, AT;
austriamicrosystems AG, Unterpremstaetten, AT;
Abstract
A filtering arrangement comprises a reference voltage input () and a compensation current arrangement () coupled to the reference voltage input () and configured to provide a control current at a current output () as a function of a voltage at the reference voltage input (). The filtering arrangement also comprises a first and a second current source () each having a control input () coupled to the current output (), a first and a second filter input (), and a first transistor (T) and a second transistor (T). The first transistor (T) has a first connection (T), a second connection (T) and a control connection (T), where its first connection (T) is coupled to the first current source () and its second connection (T) is coupled to the first filter input () through a first resistor (R). The second transistor (T) has a first connection (T), a second connection (T) and a control connection (T), where its first connection T) is coupled to the second current source (), its second connection (T) is coupled to the second filter input () through a second resistor (R) and its control connection (T) is coupled to its first connection (T) and to the control connection (T) of the first transistor (T). A capacitive element (C) is coupled between the first connection (T) of the first transistor (T) and the second connection (T) of the second transistor (T) and a filter output () is coupled to the first connection (T) of the first transistor (T).