公开(公告)号：US20230421160A1

公开(公告)日：2023-12-28

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 ,  H03L7/097 ,  H03K3/0233

CPC classification number: H03L7/0807 ,  H03L7/097 ,  H03K3/02332

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.