An 800GbE PAM-4 PHY Transceiver that Supports 42dB Copper and Direct-Drive Optical Applications in 7nm. - Chang Liu; Burak Çatli; Yong Liu; Anand Vasani; Guansheng Li; Kun Chua; Lakshmi P. Rao; Yang Liu; Xin Meng; Jiawen Zhang; Tim He; Batu Dayanik; et al. (CICC, 2025)