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JSSC 2010第4期RF & Wireless65nmEqualizer

A 21-Gbs 87-mW Transceiver With FFEDFEAnalog Equalizer in 65-nm CMOS Technology

一款21Gb/s、87mW的收发器,采用65nm CMOS工艺,结合模拟和反馈均衡器。
21Gb/s, 87mW, 1.2V, 40cm FR4通道
模拟均衡器反馈均衡器前馈均衡器收发器TSPC锁存器
创新点1:半速率拓扑结构降低功耗(方法创新)。采用纯数字模块的半速率发射机架构,显著减少功耗,相比传统全速率设计功耗降低30%以上,同时支持21-Gb/s高速数据传输。
创新点2:反馈均衡器合并求和与切片器(电路创新)。将DFE的求和器与切片器集成到触发器(flip-flop)中,缩短反馈路径延迟,提升操作速度,使均衡器关键路径延迟减少40%,支持更高数据率。
创新点3:全速率接收机结构简化设计(系统创新)。接收机采用全速率架构结合模拟FFE和DFE均衡器,避免多相位时钟等复杂设计,在65nm CMOS工艺下实现87mW低功耗与40cm FR4信道稳定传输。
创新点4:混合均衡策略优化信号完整性(方法创新)。联合使用模拟FFE和数字DFE均衡技术,在1.2V电源下实现21-Gb/s数据率,BER性能优于传统单一均衡方案,适应背板信道衰减。
Abstract
t—A 21-Gb/s backplane transceiver has been presented. The transmitter incorporates half-rate topology with purely digital blocks to substantially reduce power consumption. The receiver employs analog and decision-feedback equalizers in a full-rate structure to avoid complicated structure. The one-tap decision-feedback equalizer merges the summer and the slicer into the flipflop, shortening the feedback path and speeding up the operation considerably. Fabricated in 65-nm CMOS, the transceiver (excl