公开(公告)号：US12184290B2

公开(公告)日：2024-12-31

申请号：US18081027

申请日：2022-12-14

Applicant: Korea University Research and Business Foundation

Inventor： Chulwoo Kim ,  Seung-Woo Park ,  Yoon-Jae Choi ,  Jin-Cheol Sim

IPC: H03L7/08 ,  H03K3/0233 ,  H03L7/097

Abstract: Disclosed in a PAM-4 receiver using pattern-based clock and data recovery circuitry, which includes an analog front end that receives an external signal and recovers channel loss to output a refined PAM-4 signal, a comparison unit that receives the PAM-4 signal and compares the PAM-4 signal with a reference voltage to generate a recovery signal, and a recovery unit that receives the recovery signal and recovers data and a clock. The analog front end includes an equalizer that matches amplitudes of all frequency components of the external signal and an amplifier that amplifies an output signal of the equalizer.