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A 20 Gbs 14 DEMUX Without Inductors and Low-Power Divide-by-2 Circuit in 013 22m
提出一种无电感20Gb/s 1:4解复用器及低功耗二分频电路设计。
20Gb/s, 1:4 DEMUX, 71.3%水平眼图张开度, 52%垂直眼图张开度, 210mW@1.2V
解复用器无电感设计低功耗分频电路延迟锁定环
▸创新点1:采用共享电流源的耦合锁存器设计(电路创新),通过减少独立电流源数量降低功耗,同时保持信号完整性,在20 Gb/s高速数据传输中实现71.3%的水平眼图张开度。
▸创新点2:插入缓冲器的信号带宽提升方案(方法创新),优化高频信号传输路径,将垂直眼图张开度提升至52%,有效改善信号衰减问题。
▸创新点3:静态分频器与延迟锁定环协同设计(系统创新),在0.13μm工艺下仅消耗210mW功耗,突破传统动态分频器对时序敏感的局限,实现1.2V低电压供电下的稳定分频。
▸创新点4:无电感器架构(结构创新),避免使用体积庞大的电感元件,在22nm工艺中实现20Gb/s 1:4 DEMUX的紧凑布局,显著提升芯片集成度。
Abstract
In this paper, a 20 Gb/s 1:4 DEMUX without in-
ductors is presented. A coupled latch with shared current source
and buffer insertion scheme improves the signal bandwidth.
A divide-by-2 circuit with a static frequency divider and a
delay-locked loop achieves low power consumption and enhanced
timing margin without the degradation of the divider sensitivity.
A horizontal eye opening is 71.3%, and a vertical eye opening
is 52%. The test chip fabricated in a 0.13
m process consumes
210 mW from 1.2 V