公开(公告)号：US20240340012A1

公开(公告)日：2024-10-10

申请号：US18624590

申请日：2024-04-02

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： BAEKMIN LIM ,  GYUSIK KIM ,  SEUNGJIN KIM ,  SEUNGHYUN OH

IPC: H03L7/081 ,  H03L7/093

CPC classification number: H03L7/081 ,  H03L7/093

Abstract: A clock generation device includes a delay line that generates a modulated clock signal from a reference clock signal having a first period, a pulse generator configured to receive the modulated clock signal and generate a pulse signal in response to edges of pulses included in the modulated clock signal, and a clock generator that generates a clock signal having a second period distinguished from the first period, based on the reference clock signal and the pulse signal. The delay line generates a first pulse based on the reference clock signal and then generates a second pulse after a time modulated from the first period by a result of multiplying the second period by a first numerical value selected from a plurality of numerical values according to a certain probability.

公开(公告)号：US20220360270A1

公开(公告)日：2022-11-10

申请号：US17734693

申请日：2022-05-02

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： SANGDON JUNG ,  GYUSIK KIM ,  SEUNGJIN KIM ,  SEUNGHYUN OH ,  JIHWAN KIM

IPC: H03L7/10 ,  H03L7/089 ,  H03L7/099

Abstract: A phase locked loop includes a phase detector outputting a first signal corresponding to a phase difference of a reference frequency signal and a division frequency signal, a charge pump amplifying a first signal to output a second signal, a loop filter filtering the second signal to output a third signal, a voltage-to-current converter receiving the third signal and outputting a fourth signal, a digital-to-analog converter outputting a fifth signal based on the fourth signal and a digital compensation signal, an oscillator outputting an output frequency signal having a frequency corresponding to the fifth signal, a divider dividing the frequency of the output frequency signal to output the division frequency signal and a compensation frequency signal, and an automatic frequency calibrator compensating for the voltage-to-current converter based on a difference between a frequency of the compensation frequency signal and a frequency of a reference frequency signal.