A 1.11pJ/b 224Gb/s XSR Receiver with Slice-Based CTLE and PI-Based Clock Generator in 12nm CMOS

📋 论文概要

本文提出了一种在12nm CMOS工艺下实现的224Gb/s超短距接收机，采用基于分片的连续时间线性均衡器和基于相位插值的时钟发生器，解决了在高数据率下CTLE带宽和采样频率的挑战，实现了1.11pJ/b的能效。

💡 主要创新点

• 提出基于分片的CTLE架构，通过多个子均衡器并行工作，降低了对单个均衡器带宽的要求，从而在低功耗下实现高数据率均衡。
• 采用基于相位插值的时钟发生器，支持四分之一速率采样，有效降低了时钟频率和功耗，同时保证了高速采样性能。
• 整体接收机实现了224Gb/s的数据率和1.11pJ/b的能效，展现了在超短距通信中的卓越性能。

🏷 关键词

📄 原文摘要

Integrated Circuits, Beijing, China 1 2 Over the past few decades, process scaling and architecture advancements have led to an exponential increase in transceiver data rates. Recently, 224Gb/s DSP-based receivers (RXs) targeting long-reach electrical and optical transmission have been demonstrated [1-3]. For extra-short reach (XSR) communication at 112Gb/s, analog RXs employing continuoustime linear equalizers (CTLEs) and quarter-rate slicers have shown superior energy efficiency [4-5]. However, doubling CTLE bandwidth and sampling frequency is challenging, particularly when the power and area are limited. This paper presents a 224Gb/s XSR RX that overcomes these challenges using a slice-based CTLE and a PI-based eight-phase clock

👥 作者与机构

Bingyi Ye1,2, Tianchen Ye1, Tianyuan Zhong1, Zhiwen Huang1, Lei Shen1,

Boyang Zhang1, Dunshan Yu1, Yandong He1, Weixin Gai1,3 Peking University, Beijing, China East China Normal University, Shanghai, China 3 Beijing Advanced Innovation Center for