Xi Chen ![](/sites/default/files/person/profile.JPG) Xi Chen joined NVIDIA's Circuits Research Group in January 2012. He received the B.S. and M.S. degrees from Zhejiang University in 2003 and 2006, respectively, and the PhD degree in electrical engineering from North Carolina State University in 2011. His recent projects and researches include circuits for high-speed low-power off-chip and on-chip signaling, noise and interference tolerant circuit designs, and new clock generation technique for high-speed links. Research Area(s) [Circuits and VLSI Design](/research-area/circuits) Main Field of Interest [Circuits and VLSI Design](/research-area/circuits) ### Publications ### 2024 [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](/publication/2024-04_0190-pjbit-252-gbswire-inverter-based-ac-coupled-transceiver-short-reach-die) [Yoshinori Nishi](/person/yoshi-nishi), John W. Poulton, [Xi Chen](/person/xi-chen), [Sanquan Song](/person/sanquan-song), [Brian Zimmer](/person/brian-zimmer), [Walker Turner](/person/walker-turner), [Stephen Tell](/person/stephen-tell), [Nikola Nedovic](/person/nikola-nedovic), [John Wilson](/person/john-wilson), [William Dally](/person/william-dally), [Tom Gray](/person/tom-gray) [IEEE Journal of Solid-State Circuits (JSSC) (Volume: 59, Issue: 4, April 2024)](https://ieeexplore.ieee.org/document/10185334) ### 2023 [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](/publication/2023-06_0190-pjbit-252-gbswire-inverter-based-ac-coupled-transceiver-short-reach-die) [Yoshinori Nishi](/person/yoshi-nishi), John W. Poulton, [Xi Chen](/person/xi-chen), [Sanquan Song](/person/sanquan-song), [Brian Zimmer](/person/brian-zimmer), [Walker Turner](/person/walker-turner), [Stephen Tell](/person/stephen-tell), [Nikola Nedovic](/person/nikola-nedovic), [John Wilson](/person/john-wilson), [William Dally](/person/william-dally), [Tom Gray](/person/tom-gray) [2023 IEEE SYMPOSIUM ON VLSI TECHNOLOGY & CIRCUITS](https://ieeexplore.ieee.org/abstract/document/10185334) [A 0.297-pJ/Bit 50.4-Gb/s/Wire Inverter-Based Short-Reach Simultaneous Bi-Directional Transceiver for Die-to-Die Interface in 5-nm CMOS](/publication/2023-04_0297-pjbit-504-gbswire-inverter-based-short-reach-simultaneous-bi-directional) [Yoshinori Nishi](/person/yoshi-nishi), John W. Poulton, [Walker Turner](/person/walker-turner), [Xi Chen](/person/xi-chen), [Sanquan Song](/person/sanquan-song), [Brian Zimmer](/person/brian-zimmer), [Stephen Tell](/person/stephen-tell), [Nikola Nedovic](/person/nikola-nedovic), [John Wilson](/person/john-wilson), [William Dally](/person/william-dally), [Tom Gray](/person/tom-gray) [IEEE Journal of Solid-State Circuits ( Volume: 58, Issue: 4, April 2023)](https://ieeexplore.ieee.org/document/10011563) ### 2022 [A 0.297-pJ/bit 50.4-Gb/s/wire Inverter-Based Short-Reach Simultaneous Bidirectional Transceiver for Die-to-Die Interface in 5nm CMOS](/publication/2022-06_0297-pjbit-504-gbswire-inverter-based-short-reach-simultaneous-bidirectional) [Yoshinori Nishi](/person/yoshi-nishi), John W. Poulton, [Xi Chen](/person/xi-chen), [Sanquan Song](/person/sanquan-song), [Brian Zimmer](/person/brian-zimmer), [Walker Turner](/person/walker-turner), [Stephen Tell](/person/stephen-tell), [Nikola Nedovic](/person/nikola-nedovic), [John Wilson](/person/john-wilson), [William Dally](/person/william-dally), [Tom Gray](/person/tom-gray) [2022 IEEE SYMPOSIUM ON VLSI TECHNOLOGY & CIRCUITS](https://archive.vlsisymposium.org/22web/about/) ### 2020 [Reference-Noise Compensation Scheme for Single- Ended Package-to-Package Links](/publication/2020-02_reference-noise-compensation-scheme-single-ended-package-package-links) [Xi Chen](/person/xi-chen), [Nikola Nedovic](/person/nikola-nedovic), [Stephen Tell](/person/stephen-tell), [Sudhir Kudva](/person/sudhir-kudva), [Brian Zimmer](/person/brian-zimmer), [Trey Greer](/person/trey-greer), John Poulton, [Sanquan Song](/person/sanquan-song), [Walker Turner](/person/walker-turner), [John Wilson](/person/john-wilson), [Tom Gray](/person/tom-gray) [2020 International Solid-State Circuits Conference](http://isscc.org/) ### 2019 [Voltage-Follower Coupling Quadrature Oscillator with Embedded Phase-Interpolator in 16nm FinFET](/index.php/publication/2019-04_voltage-follower-coupling-quadrature-oscillator-embedded-phase-interpolator) [Xi Chen](/index.php/person/xi-chen), [Sanquan Song](/index.php/person/sanquan-song), John Poulton, [Nikola Nedovic](/index.php/person/nikola-nedovic), [Brian Zimmer](/index.php/person/brian-zimmer), [Stephen Tell](/index.php/person/stephen-tell), [Tom Gray](/index.php/person/tom-gray) [IEEE Custom Integrated Circuits Conference 2019](http://ieee-cicc.org/) [A 1.17-pJ/b, 25-Gb/s/pin Ground-Referenced Single-Ended Serial Link for Off- and On-Package Communication Using a Process- and Temperature-Adaptive Voltage Regulator](/publication/2019-01_117-pjb-25-gbspin-ground-referenced-single-ended-serial-link-and-package) John Poulton, [John Wilson](/person/john-wilson), [Walker Turner](/person/walker-turner), [Brian Zimmer](/person/brian-zimmer), [Xi Chen](/person/xi-chen), [Sudhir Kudva](/person/sudhir-kudva), [Sanquan Song](/person/sanquan-song), [Stephen Tell](/person/stephen-tell), [Nikola Nedovic](/person/nikola-nedovic), Wenxu Zhao, Sunil Sudhakaran, [Tom Gray](/person/tom-gray), [William Dally](/person/william-dally) IEEE JOURNAL OF SOLID-STATE CIRCUITS ### 2018 [Ground-Referenced Signaling for Intra-Chip and Short-Reach Chip-to-Chip Interconnects](/publication/2018-04_ground-referenced-signaling-intra-chip-and-short-reach-chip-chip-interconnects) [Walker Turner](/person/walker-turner), John Poulton, [John Wilson](/person/john-wilson), [Xi Chen](/person/xi-chen), [Stephen Tell](/person/stephen-tell), [Matt Fojtik](/person/matt-fojtik), [Trey Greer](/person/trey-greer), [Brian Zimmer](/person/brian-zimmer), [Sanquan Song](/person/sanquan-song), [Nikola Nedovic](/person/nikola-nedovic), [Sudhir Kudva](/person/sudhir-kudva), Sunil Sudhakaran, Rizwan Bashirullah, Wenxu Zhao, [William Dally](/person/william-dally), [Tom Gray](/person/tom-gray) Custom Integrated Circuits Conference [A 1.17pJ/b 25Gb/s/pin Ground-Referenced Single Ended Serial Link for Off- and On-Package Communication in 16nm CMOS Using a Process- and Temperature-Adaptive Voltage Regulator](/index.php/publication/2018-02_117pjb-25gbspin-ground-referenced-single-ended-serial-link-and-package) [John Wilson](/index.php/person/john-wilson), [Walker Turner](/index.php/person/walker-turner), John Poulton, [Brian Zimmer](/index.php/person/brian-zimmer), [Xi Chen](/index.php/person/xi-chen), [Sanquan Song](/index.php/person/sanquan-song), [Stephen Tell](/index.php/person/stephen-tell), [Nikola Nedovic](/index.php/person/nikola-nedovic), Wenxu Zhao, Sunil Sudhakaran, [Tom Gray](/index.php/person/tom-gray), [William Dally](/index.php/person/william-dally) ISSCC ### 2016 [A 6.5-to-23.3fJ/b/mm Balanced Charge-Recycling Bus in 16nm FinFET CMOS at 1.7-to-2.6Gb/s/wire with Clock Forwarding and Low-Crosstalk Contraflow Wiring](/publication/2016-02_65-233fjbmm-balanced-charge-recycling-bus-16nm-finfet-cmos-17-26gbswire-clock) [John Wilson](/person/john-wilson), [Matt Fojtik](/person/matt-fojtik), John Poulton, [Xi Chen](/person/xi-chen), [Stephen Tell](/person/stephen-tell), [Trey Greer](/person/trey-greer), [Tom Gray](/person/tom-gray), [William Dally](/person/william-dally) [International Solid-State Circuits Conference (ISSCC 2016)](http://ieeexplore.ieee.org/document/7417954/) ### 2015 [High-speed Low-power On-chip Global Signaling Design Overview](/index.php/publication/2015-01_high-speed-low-power-chip-global-signaling-design-overview) [Xi Chen](/index.php/person/xi-chen), [John Wilson](/index.php/person/john-wilson), John Poulton, Rizwan Bashirullah, [Tom Gray](/index.php/person/tom-gray) [DesignCon](http://presentations.designcon.com/events/santa-clara/2015/conference-sessions) ### 2013 [A 0.54 pJ/b 20 Gb/s Ground-Referenced Single-Ended Short-Reach Serial Link in 28 nm CMOS for Advanced Packaging Applications](/publication/2013-12_054-pjb-20-gbs-ground-referenced-single-ended-short-reach-serial-link-28-nm) John Poulton, [William Dally](/person/william-dally), [Xi Chen](/person/xi-chen), John Eyles, [Trey Greer](/person/trey-greer), [Stephen Tell](/person/stephen-tell), [John Wilson](/person/john-wilson), [Tom Gray](/person/tom-gray) [Journal of Solid State Circuits](http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6601723) [A 0.54pJ/b 20Gb/s Ground-Referenced Single-Ended Short-Haul Serial Link in 28nm CMOS for Advanced Packaging Applications](/index.php/publication/2013-02_054pjb-20gbs-ground-referenced-single-ended-short-haul-serial-link-28nm-cmos) John Poulton, [William Dally](/index.php/person/william-dally), [Xi Chen](/index.php/person/xi-chen), John Eyles, [Trey Greer](/index.php/person/trey-greer), [Stephen Tell](/index.php/person/stephen-tell), [Tom Gray](/index.php/person/tom-gray) [ISSCC](http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6487789)