A 28.05Gb/s transceiver using quarter-rate triple-speculation hybrid-DFE receiver with calibrated sampling phases in 32nm CMOS

Abstract

This paper presents a 28.05Gb/s transceiver in 32nm SOI CMOS technology. The receiver employs a quarterrate triple-speculation architecture. Techniques are introduced to adapt for mismatches in tap weights, gains and sampling phases. Error-free signaling at 28.05Gb/s is demonstrated with the transceiver over a 48dB loss backplane channel. In a four-port configuration, the power consumption at 28.05Gb/s is 484mW/lane, giving a FOM of 0.36mW/Gb/s/dB.