An 8b DAC-Based SST TX Using Metal Gate Resistors with 1.4pJ/b Efficiency at 112Gb/s PAM-4 and 8-Tap FFE in 7iim CMOS. - Marcel A. Kossel; Vishal Khatri; Matthias Braendli; Pier Andrea Francese; Thomas Morf; Serdar A. Yonar; Mridula Prathapan; Eric J. Lukes; Raymond A. Richetta; Carrie Cox (ISSCC, 2021)