Infoscience

Conference paper

A 64Gb/s 1.4pJ/b NRZ Optical-Receiver Data-Path in 14nm CMOS FinFET

This work describes a NRZ receiver data-path fabricated in 14nm bulk FinFET technology and characterized in an 850nm VCSEL based optical link up to 64Gb/s. It achieves 1.42pJ/bit energy efficiency while recovering PRBS-7 data (BER< 10-12) modulated by a VCSEL driver with 1-tap FFE. The receiver utilizes a self-referenced low-bandwidth TIA combined with a speculative 1-tap DFE to achieve high sensitivity. The measured sensitivity at 64 Gb/s, 56 Gb/s and 32 Gb/s are -5.5dBm, -9dBm and -13dBm OMA respectively.

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