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The world's first CMOS "gearbox LSI" based on 65-nm CMOS technology-namely, a 2-W 100-gigabit-Ethernet gearbox LSI combining a 10:4 multiplexer and a 4:10 demultiplexer-was developed. Its power consumption is 75% lower than that of a conventional SiGe-based gearbox LSI. The power consumption of its 12.5-Gb/s interface is 0.98 mW/(Gb/s), while that of its 25- Gb/s interface is 14 mW/(Gb/s).
The first CMOS “gearbox LSI” based on 65-nm CMOS technology—namely, a 2-W 100-Gigabit-Ethernet gearbox LSI combining a 10:4 multiplexer and a 4:10 demultiplexer—was developed. Its power dissipation is 75% lower than that of a conventional SiGe-based gearbox LSI. To develop this low-power gearbox LSI, the power dissipation of its 25-Gb/s interface is decreased to 14 mW/Gb/s by three circuit schemes:...
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