Invention Grant
- Patent Title: Increased phase interpolator linearity in phase-locked loop
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Application No.: US17526753Application Date: 2021-11-15
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Publication No.: US11646742B1Publication Date: 2023-05-09
- Inventor: Yi-Chieh Huang , Ying Wei , Bo-Yu Chen
- Applicant: NVIDIA Corporation
- Applicant Address: US CA Santa Clara
- Assignee: NVIDIA Corporation
- Current Assignee: NVIDIA Corporation
- Current Assignee Address: US CA Santa Clara
- Agency: Lowenstein Sandler LLP
- Main IPC: H03L7/087
- IPC: H03L7/087 ; H03L7/099 ; H03K19/173 ; H03L7/083 ; H03L7/081

Abstract:
A phase-locked loop (PLL) device includes a first phase detector to receive an in-phase reference clock and an in-phase feedback clock, the first phase detector to output a first phase error; a second phase detector to receive a quadrature reference clock and a quadrature feedback clock, the second phase detector to output a second phase error; a proportional path component to generate first current pulses from the first phase error and second current pulses from the second phase error; an integrator circuit coupled to the proportional path component, the integrator circuit to sum, within a current output signal, the first current pulses and the second current pulses; a ring oscillator to be driven by the current output signal; and a pair of phase interpolators coupled to an output of the ring oscillator, the pair of phase interpolators to respectively generate the in-phase feedback clock and the quadrature feedback clock.
Public/Granted literature
- US20230155595A1 INCREASED PHASE INTERPOLATOR LINEARITY IN PHASE-LOCKED LOOP Public/Granted day:2023-05-18
Information query
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