A 224-Gb/s DAC-Based PAM-4 Quarter-Rate Transmitter With 8-Tap FFE in 10-nm FinFET

Jihwan Kim,Sandipan Kundu,Ajay Balankutty,Matthew Beach,Bong Chan Kim,Stephen T. Kim,Yutao Liu,Savyasaachi Keshava Murthy,Priya Wali,Kai Yu,Hyung Seok Kim,Chuan-Chang Liu,Dongseok Shin,Ariel Cohen,Yoav Segal,Yongping Fan, Peng Li,Frank O’Mahony

IEEE Journal of Solid-State Circuits（2022）

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摘要

This article presents analysis, design details, and measurement result of a 224-Gb/s four-level pulse amplitude modulation (PAM-4) transmitter (TX) consisting of a 7-bit voltage digital-to-analog converter (DAC) driver, digital 8-tap feed-forward equalizer (FFE), and a 28-GHz inductively peaked clock distribution network. The TX DAC uses quarter-rate clocking with a 4:1 pulse-based data serializat...

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关键词

Clocks,Bandwidth,Timing,Jitter,Equalizers,Transmitters,Linearity

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