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引用次数: 2
摘要
本文采用0.18 μ m CMOS技术实现了一种自适应3.125Gbps同轴电缆均衡器。对于长度为15m和20m的Belden 8219电缆，在1.5625GHz处信号衰减分别为-12dB和-16dB。由于信号经过同轴电缆后会衰减，该自适应3.125Gbps同轴电缆均衡器补偿了宽带损耗，可以适应不同长度的电缆。不包括输出缓冲器的核心电路仅从输出摆幅高达400mV p-p的1.8V电源中耗散14.8mW。芯电路占用0.5 × 0.63mm2，测量20m电缆的定时抖动小于0.25UI
In this paper, an adaptive 3.125Gbps coaxial cable equalizer is realized in a 0.18-mum CMOS technology. For the length of 15m and 20m Belden 8219 cables, the signal attenuation are -12dB and -16dB, respectively, at 1.5625GHz. Due to the signal attenuation after passing through the coaxial cable, this adaptive 3.125Gbps coaxial cable equalizer compensates the broadband loss to be adaptive to different length of the cables. The core circuit excluding output buffers dissipates only 14.8mW from a 1.8V supply with output swing up to 400mV p-p. The core circuit occupies 0.5times0.63mm2 and the measured timing jitter for a cable of 20m is less than 0.25UI
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