Back to results
US 2003/0155950 A1Published application
Analog PLL with switched capacitor resampling filter
AssigneeZarlink Semiconductor Inc.
InventorsRobertus Laurentius van der Valk, Gerrit Dijkstra, Philip Ching
Life of this patent
Estimating the term…
Abstract
A resampler filter for use in an analog phase-locked loop has a charge pump and one or more switched capacitors switched by signals derived from a voltage controlled oscillator in the phase locked loop.
Claims18
A phase locked loop comprising:
- a phase detector having an output;
- a voltage controlled oscillator having an input;
- a feedback loop connecting an output of said controlled oscillator to an input of said phase detector;
- and
- a resampling filter connecting the output of said phase detector to the input of said controlled oscillator, said resampling filter comprising a charge pump and one or more switched capacitors arranged in parallel and controlled by signals derived from the voltage controlled oscillator.
2 more elements
Dependencies are inferred from the claim text.