公开(公告)号：US20250132764A1

公开(公告)日：2025-04-24

申请号：US18884601

申请日：2024-09-13

Applicant: Samsung Electronics Co., Ltd.

Inventor： Pillseong KANG ,  Chulho KIM ,  Sangmin YOO ,  Sangho LEE ,  Joonhee LEE ,  Ikkyun JO

IPC: H03L7/099 ,  H03B5/12

Abstract: A phase-locked loop (PLL) circuit comprising an oscillator including a first and a second capacitor cell array, each including a plurality of capacitor cells, and a control logic circuit connected to the oscillator. The control logic circuit configured to generate control code configured to control the oscillator such that the oscillator is configured to output a signal with a target frequency, the control code generated based on a first frequency of a first signal output from the oscillator and the target frequency, control at least some of capacitor cells included in the first capacitor cell array based on a first partial code generated based on a specified number of bits of the control code, and control at least some of capacitor cells included in the second capacitor cell array based on a second partial code generated based on bits other than the specified number of bits of the control code.

公开(公告)号：US20250080124A1

公开(公告)日：2025-03-06

申请号：US18809865

申请日：2024-08-20

Applicant: Samsung Electronics Co., Ltd.

Inventor： Pillseong KANG ,  Chulho KIM ,  Sangho LEE ,  Joonhee LEE ,  Ikkyun JO

IPC: H03L7/099 ,  H03L7/093

Abstract: A phase-locked loop circuit includes an oscillator including a plurality of capacitor cells, and a control logic circuit that receives an output from the oscillator. The control logic circuit compares a target frequency with a first frequency of a first signal output from the oscillator, generates a first input code to control at least a portion of the plurality of capacitor cells to output a signal having the target frequency based on the comparison, generates a first output code corresponding to the first input code when the first input code is within a predetermined range of input codes, and controls at least two capacitor cells from among the plurality of capacitor cells based on the first output code. The oscillator may output a second signal having a second frequency through an electrical path including capacitor cells other than grounded capacitor cells from among the plurality of capacitor cells.