We present a method for tracking and compensating the reference noise in single-ended links, enabling energy-efficient package-to-package communication in systems with noisy environment. The 25Gb/s/pin serial link with compensation loop is fabricated in 16nm FinFET process operating over PCB channel with >200mV reference noise. The maximum measured bandwidth of the compensation loop is 30MHz, and its energy and area penalty are negligible.
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