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:
Apr. 08, 2014
Filed:
Aug. 22, 2012
Xue-mei Gong, Austin, TX (US);
Adam B. Eldredge, Austin, TX (US);
Susumu Hara, Austin, TX (US);
Silicon Laboratories Inc., Austin, TX (US);
Abstract
A flexible clock synthesizer technique includes generating a phase interpolator calibration signal to adjust a phase interpolator output signal generated by a phase interpolator of an interpolative divider. The phase interpolator is responsive to a phase interpolator control code and an output signal of a fractional-N divider of the interpolative divider. The phase interpolator calibration signal is based on an error signal indicative of a phase interpolator error. The error signal may indicate a phase relationship between a reference clock signal and a feedback clock signal of a PLL. The interpolative divider may be coupled in a feedback path of the PLL. The PLL may receive a reference clock signal and the feedback clock signal may be an adjusted phase interpolator output signal. The phase interpolator calibration signal may be a phase interpolator offset code corresponding to the phase interpolator control code or a phase interpolator gain signal.