← 返回 JSSC 论文列表JSSC 2022第1期RF & Wireless28nmPAM-4
A 100-Gbs PAM-4 Optical Receiver With 2-Tap FFE and 2-Tap Direct-Feedback DFE in
一款集成2抽头FFE和2抽头直接反馈DFE的100Gbps PAM-4光接收器
28nm CMOS, 100Gb/s, -8.9dBm灵敏度@2.4e-4 BER, 3.9pJ/bit能效
光接收器PAM-4CMOS前馈均衡判决反馈均衡
▸低噪声亚奈奎斯特带宽TIA
▸混合信号采样器集成2抽头FFE和DFE
▸分布式电流积分求和器满足50Gbaud反馈延迟需求
Abstract
Optical receivers (ORXs) with integrated CMOS
electronics enable compact, low-power solutions for 400-G Eth-
ernet and co-packaged optics. In this article, we present a
100-Gb/s PAM-4 ORX with TIA and sampler integrated into
a single 28-nm CMOS IC. ORX sensitivity is optimized using
a low noise, sub-Nyquist bandwidth TIA followed by a mixed
signal sampler that includes 2-tap FFE and 2-tap DFE. A
distributed current-integrating summer helps meet feedback
latency requirements of 50-Gbaud direct-fe