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:
Dec. 19, 2006
Filed:
Oct. 07, 2003
Maurits Ortmanns, Niedernwöhren, DE;
Yiannos Manoli, Freiburg, DE;
Friedel Gerfers, Duisburg, DE;
Infineon Technologies AG, Munich, DE;
Abstract
The present invention relates to a controlled current source having a control input, in particular for digital/analogue converters in continuous-time sigma/delta modulators, having a current source () with a control input which generates an output current dependent on a control voltage applied to the control input, and having a controller () for converting a clock signal into a voltage signal, with the controller () being connected to the current source () in such a manner that the voltage signal is applied as a control voltage to the control input of the current source (). The controller is designed to is designed to convert the clock signal into a voltage signal which has within a clock duration a reproducible curve ending with a falling flank. Using the present controlled current source in a digital/analogue converter in a feedback branch of a continuous-time sigma/delta modulator permits realizing a sigma/delta modulator which is essentially insensitive to clock jitter.