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
- Resource Type
- Conference
- 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
- Source
- 2023 IEEE Symposium on VLSI Technology and Circuits (VLSI Technology and Circuits) VLSI Technology and Circuits (VLSI Technology and Circuits), 2023 IEEE Symposium on. :1-2 Jun, 2023
- Subject
- Components, Circuits, Devices and Systems
Transmitters
Capacitors
Integrated circuit interconnections
Receivers
Very large scale integration
Transceivers
Silicon
AC coupled
ISR
ACT
die-to-die
chip-to-chip
SerDes
and interposer
- Language
- ISSN
- 2158-9682
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.