A 0.190-pJ/bit 25.2-Gb/s/wire Inverter-Based AC-Coupled Transceiver for Short-Reach Die-to-Die Interfaces in 5-nm CMOS

This paper presents an Inverter-based AC-coupled Toggle (ISR-ACT) transceiver targeted for short-reach die-to-die communication over silicon interposer or similar high-density interconnect. The ISR-ACT's transmitter sends NRZ data through a small on-chip capacitor into the line. The receiver am...

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Published in2023 IEEE Symposium on VLSI Technology and Circuits (VLSI Technology and Circuits) pp. 1 - 2
Main Authors Nishi, Yoshinori, Poulton, John W., Chen, Xi, Song, Sanquan, Zimmer, Brian, Turner, Walker J., Tell, Stephen G., Nedovic, Nikola, Wilson, John M., Dally, William J., Gray, C. Thomas
Format Conference Proceeding
LanguageEnglish
Published JSAP 11.06.2023
Subjects
AC coupled
ACT
and interposer
Capacitors
chip-to-chip
die-to-die
Integrated circuit interconnections
ISR
Receivers
SerDes
Silicon
Transceivers
Transmitters
Very large scale integration
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Summary:This paper presents an Inverter-based AC-coupled Toggle (ISR-ACT) transceiver targeted for short-reach die-to-die communication over silicon interposer or similar high-density interconnect. The ISR-ACT's transmitter sends NRZ data through a small on-chip capacitor into the line. The receiver amplifies the low-swing pulses using a 1st-stage TIA to fully toggle the 2nd-stage output, where positive feedback to the input pad maintains the DC level on the line. Fabricated in a 5nm standard CMOS process, ISR-ACT link shows 0.66UI margin at 25.2Gb/s/wire on a 0.75V supply over a 1.2mm on-chip channel and demonstrates the potential to achieve 0.190pJ/bit.
ISSN:2158-9682
DOI:10.23919/VLSITechnologyandCir57934.2023.10185334