An 800GbE PAM-4 PHY Transceiver for 42 dB Copper and Direct-Drive Optical Applications in 7 nm

IF 2 Q3 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE

IEEE Solid-State Circuits Letters Pub Date : 2025-09-10 DOI:10.1109/LSSC.2025.3608134

Chang Liu;Burak Catli;Yong Liu;Anand Vasani;Guansheng Li;Kun Chuai;Lakshmi Rao;Yang Liu;Xin Meng;Jiawen Zhang;Tim He;Batu Dayanik;Vadim Milirud;Meisam Honarvar Nazari;Hyo Gyuem Rhew;Derui Kong;Arvindh Iyer;Nan Wang;Alireza Nilchi;Aminghasem Safarian;Ray Wang;Hyung-Joon Jeon;Xiaochen Yang;Boyu Hu;Jerry Han;Adesh Garg;Kumar Thasari;Heng Zhang;Namik Kocaman;Ali Nazemi;Delong Cui;Afshin Momtaz;Jun Cao

引用次数: 0

Abstract

This work presents a low power DSP-based single-chip 800GbE PAM-4 PHY transceiver in 7 nm process capable of driving eight lanes of up to 112-Gb/s. It supports both electrical and optical links with monolithic integrated laser driver enabling direct-drive PAM-4 output capability for EML and silicon photonics. The transceiver supports 42 dB IL channel at Nyquist with pre-FEC BER<3E-8. The per-lane analog power efficiency is 2.59pJ/b for low-swing drive mode and 4.58 pJ/b for direct-drive mode.

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一款800GbE PAM-4 PHY收发器，适用于42 dB铜和7 nm直接驱动光学应用

本文提出了一种低功耗、基于dsp的单片800GbE PAM-4 PHY收发器，采用7nm工艺，可驱动8通道，最高速率为112gb /s。它通过单片集成激光驱动器支持电气和光学链路，为EML和硅光子学提供直接驱动PAM-4输出能力。收发器在奈奎斯特支持42 dB IL通道，预fec误码率<3E-8。低摆幅驱动模式下的每车道模拟功率效率为2.59pJ/b，直接驱动模式下为4.58 pJ/b。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Solid-State Circuits Letters Engineering-Electrical and Electronic Engineering

CiteScore

4.30

自引率

3.70%

发文量