A blind ADC-based CDR with digital data interpolation and adaptive CTLE and DFE

摘要

This paper proposes replacing the analog phase interpolator in a phase-tracking ADC-based receiver with a digital data interpolator following the ADC. This allows for a blind ADC-based receiver that has a simpler adaptive DFE compared to previous implementations. Our measurements from a 65nm CMOS testchip confirm 7Gb/s operation for a 17dB channel loss.