You Are Invited To Attend A Guest  Lecture On Thursday, May 18, 2023 at 15:00

Room 011, Kitot Building

 By Ariel Cohen  

Title: Ultra-Fast IO and Converters Chip Design - Toward a Quarter Tera Bit-Rate Transceiver for Long-Reach Wireline Channels

:Seminar Abstract

The demand for faster, smaller, low-power and high-speed wired communication interfaces has been growing rapidly to satisfy the ever-increasing needs of datacenters and their diverse workloads. Faster electrical interfaces continue to be developed to enable this growth in datacenter bandwidth which doubles every 3-4 years. Using an ultra-fast Analog to Digital Converter (ADC) and a Digital to Analog Converter (DAC) as a part of the receiver and the transmitter, respectively, paves the way to transfer significant equalization, adaptation, and signal-processing mechanisms into the digital domain. In this lecture the motivation, the challenges, the architecture, and the circuits of such a 224 Gb/s transceiver will be presented with the focus on the receive path. The transceiver, designed in 5nm TSMC process, supports long-reach channels of 38dB attenuation at Nyquist frequency with better than 6e-7 BER. The lecture will be concluded by research opportunities of such technologies.

Index Terms—Transceiver, SERDES, Time interleaved ADC, DAC, SAR, PAM4, 224 Gb/s, digital FFE, digital DFE

Ariel Cohen Bio

Ariel Cohen received his B.Sc. degree in in electrical-engineering from Ben-Gurion University, Israel, in 1997, and his M.Ss. and Ph.D. degrees in Neuroscience from the Hebrew-University of Jerusalem, Israel, in 2003 and 2008, respectively.
Ariel is a Sr. Principal Engineer with Mixed-Signal IP group, Intel, and leads the technologies for 112/224 Gb/s ADC and DAC based SERDES since 2015. From 2008 to 2015, Ariel led the development of integrated 10 Gb/s Ethernet PHY, high-accuracy thermal sensors, sigma-delta ADCs and DACs teams.  From 2005 to 2008, he took part in establishing the bioelectronics laboratory and developed ultra-sensitive silicone-based biosensors for protein detection. Since 2012, Ariel has been an external lecturer within the Department of Electrical-Engineering and Applied Physics, The Hebrew University, Israel, teaching the VLSI courses.

His research interests include SERDES, ADCs, DACs, thermal sensors and biosensors.

Ariel Cohen was the recipient of the 2016, 2021 Intel Achievement Awards.

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