A 2.29pJ/b 112Gb/s Wireline Transceiver with RX 4-Tap FFE for Medium-Reach Applications in 28nm CMOS

📋 论文概要

本文提出了一种用于中距离应用的112Gb/s有线收发器，采用28nm CMOS工艺，接收端使用4抽头前馈均衡器（FFE）替代传统的判决反馈均衡器（DFE），以解决高速率下的反馈时序问题。实现了2.29pJ/b的能效，适用于高损耗链路。

💡 主要创新点

• 使用4抽头FFE替代DFE，避免了112Gb/s速率下DFE的严格反馈时序约束，为前向纠错（FEC）留出余量。

📄 原文摘要

entertainment has never been fulfilled. Mixed-signal PAM-4 transceivers prevail over their ADC-DSP counterparts in energy efficiency and chip area, but they have difficulties operating over high-loss links. Typically, a continuous-time linear equalizer (CTLE) and a multi-tap decision-feedback equalizer (DFE) are implemented in a mixed-signal receiver (RX). However, when the data rate reaches 112Gb/s, the implementation of the DFE suffers from stringent feedback timing. Direct DFE works only at 100Gb/s in an optical receiver [1], leaving no room for feedforward error correction (FEC). A speculative 1-tap DFE is implemented in [2], but it requires an 8-tap feedforward equalizer (FFE) at the transmitter (TX) to generate a 1+0.5D response; this may be impractical without knowing

👥 作者与机构

Bingyi Ye, Kai Sheng, Weixin Gai, Haowei Niu, Boyang Zhang, Yandong He,

Song Jia, Congcong Chen, Jiaqi Yu Peking University, Beijing, China The increasing demand for higher network data rates by new businesses and