A 112-Gbs Serial Link Transceiver With Three-Tap FFE and 18-Tap DFE Receiver for

Abstract

This article presents a power- and area-efficient multistandard serial link transceiver designed for application rates of up to 112 Gb/s, such as OIF CEI-112G and IEEE 802.3ck 400GBASE. The receiver features a continuous time linear equalizer, a programmable gain amplifier (PGA), a three-tap sampling-based feed-forward equalizer, and an 18-tap decision feedback equalizer. The transmitter uses a half-rate 2:1 multi- plexer (MUX) with a duty cycle distortion corrected clock and a 7-bit digital to