Invention Grant
- Patent Title: Method and circuits for fine-controlled phase/frequency offsets in phase-locked loops
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Application No.: US16353161Application Date: 2019-03-14
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Publication No.: US10797709B2Publication Date: 2020-10-06
- Inventor: Alan C. Rogers , Raghunand Bhagwan
- Applicant: Analog Bits Inc.
- Applicant Address: US CA Sunnyvale
- Assignee: Analog Bits Inc.
- Current Assignee: Analog Bits Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: Fish & Richardson P.C.
- Main IPC: H03L7/087
- IPC: H03L7/087 ; H03L7/18 ; H03L7/089 ; H03L7/081 ; H03L7/197 ; H03L7/099

Abstract:
Implementations provide a phase locked loop (PLL) device that includes: a phase and frequency detector (PFD) and charge pump (CP) portion; a low pass filter; a voltage controlled oscillator (VCO) driven by the low pass filter to generate a VCO clock signal, multiple divider configured to receive the VCO clock signal and frequency divide the VCO clock signal in stages to generate a series statically divided VCO clock signals and a dynamically divided VCO clock signal; a feedback portion including a first component configured to receive the dynamically divided VCO clock signal and generate indicator signals; and a second component configured to multiplex from the indicator signals to generate the feedback clock signal set for the PFD and CP portion; and a master phase/frequency control engine configured to assert a division control over at least one divider and a multiplex control over the multiplex network.
Public/Granted literature
- US20190207610A1 METHOD AND CIRCUITS FOR FINE-CONTROLLED PHASE/FREQUENCY OFFSETS IN PHASE-LOCKED LOOPS Public/Granted day:2019-07-04
Information query
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