JSSC 2020第8期RF & Wireless65nmEqualizer

A 01-pJbdB 162-to-108-Gbs Video Interface Receiver With Jointly Adaptive CTLE an

一款采用联合自适应均衡技术的1.62至10.8 Gb/s视频接口接收器，通过SSLMS算法优化CTLE和DFE，实现高效能和低功耗。

65nm CMOS, 37.2 mW at 10.8 Gb/s, 0.1 pJ/b/dB

视频接口接收器自适应均衡SSLMS算法CTLEDFE

▸创新点1：联合自适应均衡技术（系统创新）。该论文提出了一种联合自适应连续时间线性均衡器（CTLE）和判决反馈均衡器（DFE）的方法，通过统一SSLMS算法实现两者的协同优化，显著减少了自适应时间和硬件开销，同时降低了功耗。该技术在10.8 Gb/s速率下可补偿高达34 dB的信道损耗。

▸创新点2：SSLMS算法扩展应用（方法创新）。首次将SSLMS算法同时应用于CTLE和DFE的自适应过程，通过数值分析和仿真验证了采用第四/第五后光标平均值作为CTLE自适应指标的有效性，解决了传统方法收敛速度慢的问题。

▸创新点3：偏置数据电平参考(dLev)新概念（电路创新）。针对前光标ISI导致的SSLMS算法自适应不足问题，提出通过简单调整dLev更新方程的上下比率来获取优化的dLev值，有效提升了系统在复杂信道条件下的稳定性。

▸创新点4：高能效架构设计（电路创新）。采用65nm CMOS工艺实现的接收器芯片在10.8 Gb/s速率下仅消耗37.2mW功率，达成0.1pJ/b/dB的能效指标，其0.174mm²的紧凑面积展现了优异的集成度与性能平衡。

Abstract

In this article, a 1.62-to-10.8-Gb/s video interface receiver with jointly adaptive equalization is presented. Sign–sign least-mean-squares (SSLMS) algorithm is applied to adaptation for not only a decision feedback equalizer (DFE) but also a continuous-time linear equalizer (CTLE) to unify the adaptation methods. This approach facilitates concurrent adaptation that results in short adaptation time and also reduces the extra hardware and power consumption. An average value of fourth- and ﬁfth-po