Invention Grant
- Patent Title: Analog phase locked loop
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Application No.: US17241578Application Date: 2021-04-27
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Publication No.: US11489532B2Publication Date: 2022-11-01
- Inventor: Mathieu Périn , Stefano Dal Toso
- Applicant: NXP B.V.
- Applicant Address: NL Eindhoven
- Assignee: NXP B.V.
- Current Assignee: NXP B.V.
- Current Assignee Address: NL Eindhoven
- Priority: EP21305185 20210212
- Main IPC: H03L7/099
- IPC: H03L7/099 ; H03L7/097 ; H03L7/093

Abstract:
An analog PLL comprising: a VCO configured to provide a PLL output signal; a phase detector (PD) configured to receive a feedback signal from the VCO and a reference signal and wherein the PD provides a PD signal to a low pass filter (LPF), the LPF configured to filter of the PD signal and provide the filtered signal as a tuning voltage for the VCO; and a tracking loop configured to receive the tuning voltage and comprising at least a tracking loop comparator configured to provide a comparator output voltage based on a difference between the tuning voltage and a target voltage, wherein an output of the tracking loop provides a tracking voltage based on the comparator output voltage and wherein the frequency of the PLL output voltage is based on the tuning voltage and the tracking voltage.
Public/Granted literature
- US20220263512A1 ANALOG PHASE LOCKED LOOP Public/Granted day:2022-08-18
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