112-Gb/s PAM4 ADC-Based SERDES Receiver with Resonant AFE for Long-Reach Channels

Yoel Krupnik, Yevgeny Perelman, Itamar Levin, Yosi Sanhedrai, Roee Eitan, Ahmad Khairi, Yizhak Shifman, Yoni Landau, Udi Virobnik, Noam Dolev, Alon Meisler, Ariel Cohen

Research output: Contribution to journalArticlepeer-review

44 Scopus citations


A 112-Gb/s PAM4 analog-To-digital converter (ADC)-based serializer/de-serializer transceiver (SERDES) receiver is implemented on Intel's 10-nm FinFET process. The receiver consists of a low-noise resonant analog front end (AFE) which provides equalization and gain at 28 GHz, a 64-way time-interleaved ADC, digital equalization consisting of a 16-Tap feed-forward equalizer (FFE), and a 1-Tap decision-feedback equalizer (DFE), as well as a clock and data recovery (CDR) loop utilizing a 7-GHz digitally controlled oscillator (DCO). Long-reach,-35 dB Nyquist channels are supported by a pre-forward error correction (FEC) bit error rate (BER) of 1e-6, thus making it compatible with existing and projected IEEE Ethernet specifications.

Original languageEnglish
Article number8952650
Pages (from-to)1077-1085
Number of pages9
JournalIEEE Journal of Solid-State Circuits
Issue number4
StatePublished - Apr 2020
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 1966-2012 IEEE.


Manuscript received August 15, 2019; revised October 28, 2019 and December 4, 2019; accepted December 5, 2019. Date of publication January 8, 2020; date of current version March 26, 2020. This article was approved by Guest Editor Brian Ginsburg. This work was supported by Intel Corporation. (Corresponding author: Ariel Cohen.) Y. Krupnik, I. Levin, Y. Sanhedrai, A. Khairi, Y. Shifman, U. Virobnik, and A. Cohen are with the Mixed-Signal IP Group, Intel Corporation, Jerusalem, Israel (e-mail: [email protected]).

FundersFunder number
Intel Corporation


    • 112 Gb/s
    • PAM4
    • SAR
    • analog-To-digital converter (ADC)
    • feed-forward equalizer (FFE)
    • serializer/de-serializer transceiver (SERDES)


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