Ke-Chung Wu

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A linear CDR circuit [1] manifests itself in easy modeling and minimal activity on phase adjustment under locked condition. However, linear PDs face a speed limitation at around 10Gb/s, primarily because of the required pulsewidth comparison and finite flip-flop CK-to-Q delay. Parallelism could relax the stringent speed requirement, but it also introduces(More)
—A 2 25-Gb/s receiver for 100-Gb Ethernet (100 GbE) has been implemented in 65-nm CMOS technology. A new regulation mechanism is applied to the limiting amplifier to minimize its gain and bandwidth variations. Two low-power full-rate CDRs (with a built-in clock generator) and a high-speed 2:5 DMUX circuit are integrated. Although only two channels are(More)
The ever growing bandwidth requirement for novel server technologies including multi-core processing, virtualization, and networked storage leads to multi-channel Internet connectivity such as 100GbE. Among the proposed standards [1], those with 4 channels (e.g., 100GBASE-ER4) are selected to arrive at a reasonable component count in discrete and photonic(More)
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