A 246-fJ/b 13.3-Tb/s/mm Single-Ended Current-Mode Transceiver with Crosstalk Cancellation for Shield-Less Short-Reach Interconnect

This paper presents a 20-Gb/s/line current-mode transceiver for dense short-reach on-chip interconnect. The transceiver achieves a systematic crosstalk cancellation (XTC) by balancing the crosstalk induced by capacitive and inductive coupling. As a receiver frontend, a current-sensing amplifier is designed with an optimum input resistance value for XTC. Without any additional circuits for XTC and equalization, the transceiver implemented in a 40nm CMOS technology shows an energy efficiency of 246fJ/b and an edge bandwidth density of I3.3Tb/s/mm, even with shield-less
$1.5-\mu \mathrm{m}$
pitch and I-mm length channels.