A Single-Ended Tri-Mode PAM2/3/4 Transceiver Front-End Achieving 0.437/0.302/0.314 pJ/bit Energy Efficiency for D2D Interconnection. - Hao Chang; Huajin Sun; Chenxi Han; Zhanming Gao; Yilong Dong; Yuhao Zhang; Lin Wang 115; Xiaoteng Zhao; Shubin Liu 001; Zhangming Zhu (ISCAS, 2026)