A 212.5Gb/s Pam-4 Receiver With Mutual Inductive Coupled Gm-Tia in 4nm Finfet

This paper presents a$212.5 ~\text{Gb} / \mathrm{s}$PAM- 4 receiver (RX) in 4 nm FinFET. The receiver features a hybrid continuous time linear equalizer (CTLE) with stability enhanced commonmode feedback (CMFB), Gm-TIA amplifier with mutual inductive coupling, and clock distribution network using standing wave driver. The receiver occupies$0.56 ~\text{mm}^{2}$and achieves a BER of$5.81 \mathrm{e}-6$at 212.5Gbps, with a total insertion loss of 40dB at 53.125GHz.