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:
Aug. 04, 2009
Filed:
Dec. 12, 2006
Johannes Petrus Antonius Frambach, Nijmegen, NL;
Johannes Petrus Antonius Frambach, Nijmegen, NL;
NXP B.V., Eindhoven, NL;
Abstract
An electronic circuit comprises a delay circuit that with a chain of saw tooth delay stages (-), coupled in a loop to form an oscillator for example. Each stage comprises an integrating circuit () and a current modulator () coupled to the integrating circuit (). Each stage triggers a transition in the next stage when the integration result reaches a level defined by a reference voltage. Correlating circuitry () is provided with current outputs to generate currents to the current modulators () and reference voltages for the saw tooth delay stages (-). The reference voltages are generated at least partly from a common reference (), so that noise in the currents from the current modulators () and reference voltages is correlated in a way that at least partly cancels the effect of the noise on the delay time.