0.37-pJ/b/dB PAM-4 Transmitter and Adaptive Receiver with Fixed Data and Threshold Levels for 12-m Automotive Camera Link

Woonghee Lee, Minkyo Shim, Yunhee Lee, Heejin Yang, Han Gon Ko, Woo Seok Choi, Deog Kyoon Jeong

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

This paper presents a transmitter and an adaptive receiver for the next-generation automotive camera link with four-level pulse amplitude modulation (PAM-4) signaling. The PAM-4 transmitter utilizes push-pull current drivers and a 3-tap feed-forward equalizer to improve impedance matching and eye margin, respectively. In order to cancel the sampler offset for a lower bit error rate (BER), instead of adjusting data and threshold levels, the gain of a programmable gain amplifier is adjusted adaptively under fixed data and threshold levels. The transmitter delivers 8-Gb/s PAM-4 signal to the adaptive receiver through a lossy 12-m cable (22-dB channel loss) with a BER of 1E-8, and the eye margin larger than 0.15 UI x 50 mV is measured for a BER of 1E-5. The prototype chips consume 65.2 mW (excluding PLL), exhibiting an FoM of 0.37 pJ/bit/dB.

Original languageEnglish
Title of host publicationESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages475-478
Number of pages4
ISBN (Electronic)9781665437479
DOIs
StatePublished - 13 Sep 2021
Event47th IEEE European Solid State Circuits Conference, ESSCIRC 2021 - Virtual, Online, France
Duration: 6 Sep 20219 Sep 2021

Publication series

NameESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference, Proceedings

Conference

Conference47th IEEE European Solid State Circuits Conference, ESSCIRC 2021
Country/TerritoryFrance
CityVirtual, Online
Period6/09/219/09/21

Keywords

  • adaptive receiver
  • automotive interface
  • four-level pulse amplitude modulation (PAM-4)
  • transmitter

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