A 2D-SPAD Array and Read-Out AFE for Next-Generation Solid-State LiDAR

Tuan Thanh Ta, Hiroshi Kubota, Koichi Kokubun, Toshiki Sugimoto, Masatoshi Hirono, Mitsuhiro Sengoku, Hisaaki Katagiri, Hidenori Okuni, Satoshi Kondo, Shinichi Ohtsuka, Honam Kwon, Keita Sasaki, Yutaka Ota, Kazuhiro Suzuki, Katsuyuki Kimura, Kentaro Yoshioka, Akihide Sai, Nobu Matsumoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This paper introduces several key RX techniques to realize a 200m-range and low-cost high-pixel-resolution solid-state LiDAR for autonomous self-driving systems. In-Sensor Scanning 2D-SPAD array can remove the mechanical mirror and improve the pixel-resolution by implying short dead time active-quenching SPADs. For ToF calculating SoC, we adopt the world first dual-data converter (DDC) which consolidates the functions of ADC and TDC into a single circuitry, achieving the acquisition of both high-precision time/voltage data from a single input. Such innovations lead us to 200m-range 300×80-pixel solid-state LiDAR RX under 70klux solar radiation.

Original languageEnglish
Title of host publication2020 IEEE Symposium on VLSI Circuits, VLSI Circuits 2020 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728199429
DOIs
Publication statusPublished - 2020 Jun
Externally publishedYes
Event2020 IEEE Symposium on VLSI Circuits, VLSI Circuits 2020 - Honolulu, United States
Duration: 2020 Jun 162020 Jun 19

Publication series

NameIEEE Symposium on VLSI Circuits, Digest of Technical Papers
Volume2020-June

Conference

Conference2020 IEEE Symposium on VLSI Circuits, VLSI Circuits 2020
Country/TerritoryUnited States
CityHonolulu
Period20/6/1620/6/19

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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