A 6-Gb/s PAM-3 transceiver with background time-varying offset sensing and compensation

A 6-Gb/s PAM-3 transceiver with background time-varying offset sensing and compensation

Time-varying offset such as transistor aging increases mismatches of differential pairs at pulse amplitude modulation (PAM)-3 transceivers, exacerbating signal integrity. To tackle this issue, this letter proposes a time-varying offset sensing and compensation technique for a PAM-3 transceiver. The...

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Bibliographic Details
Main Authors: Kim, Ju Eon, Yoon, Dong-Hyun, Song, Junyoung, Baek, Kwang-Hyun, Choi, Jung-Hwan, Kim, Tony Tae-Hyoung
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2023
Subjects:
Engineering::Electrical and electronic engineering
Offset Calibration
Pulse Amplitude Modulation
Online Access:https://hdl.handle.net/10356/170099
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Institution: Nanyang Technological University
Language: English
Description
Summary:Time-varying offset such as transistor aging increases mismatches of differential pairs at pulse amplitude modulation (PAM)-3 transceivers, exacerbating signal integrity. To tackle this issue, this letter proposes a time-varying offset sensing and compensation technique for a PAM-3 transceiver. The proposed compensation algorithm continuously monitors the offset by detecting faulty sensing output patterns and generates optimal reference voltage for the single-to-differential amplifier and decision feedback equalizer to cancel out the offset. The proposed 6-Gb/s PAM-3 transceiver was fabricated in 65-nm CMOS technology. The proposed offset compensation technique improves the worst-case eye-openings by 38% compared to the baseline design.

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