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:
Jan. 12, 2016
Filed:
Dec. 17, 2014
Integrated Device Technology, Inc., San Jose, CA (US);
Brian Buell, Gilbert, AZ (US);
Integrated Device Technology, Inc., San Jose, CA (US);
Abstract
A PLL includes a fractional divider to generate a periodic PLL output signal in response to REF. The fractional divider includes a digital control circuit (DDC) responsive to a digital control input signal and a multi-modulus divider (MMD), which is responsive to REFand a first digital control output signal generated by the DDC. A feedback divider (FD) is provided to generate a FD output signal in response to an MMD output signal generated by the MMD. A phase detector (PD) is provided to generate a PD output signal in response to the FD output signal and REF_CLK. A loop filter is provided to generate the digital control input signal in response to the PD output signal as modified by a noise cancellation signal (NCS). The NCS is generated to at least partially compensate for non-random deterministic noise in the MMD output signal.