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A 256 x 192-Pixel Direct Time-of-Flight LiDAR Receiver With a Current-Integrating-Based AFE Supporting 240-m-Range Imaging
Zou, Chaorui; Ou, Yaozhong; Zhu, Yan; Rui P. Martins; Chi-Hang Chan; Minglei, Zhang
2024-11
Source PublicationIEEE Journal of Solid-State Circuits
ISSN0018-9200
Volume59Issue:11Pages:3525-3537
Abstract

This article presents a direct time-of-flight (DToF) LiDAR with a current-integrating-based analog frontend (AFE), performing long-range (LR) and high-quality imaging. A current-integrating-based transimpedance amplifier (CI-TIA) facilitates a direct current-to-pulse conversion, which not only achieves superior transimpedance gain and noise performance but also adaptively compensates the background-light-induced direct current to alleviate the dynamic range (DR) obstacle in the LR LiDARs. Benefiting from the pulse manner output of the CI-TIA, a pulse position and width converter (PPWC) utilizes lightweight counters to provide the time and intensity information simultaneously, while the latter compensates for the walk error in time intrinsically. Furthermore, the intensity is used to adapt the accumulation window size to improve the imaging quality under high intensity. The prototype LiDAR receiver is fabricated in a 65-nm CMOS process, which achieves a consistent distance error of < 1 cm and precision of < 0.09% for up to 240-m measurements. It demonstrates a 256 × 192-pixel resolution imaging at 30 frames per second (fps) with the assistance of a scanning system.

Keyword3-d Imaging Analog Frontend (Afe) Background Light Compensation Current-integrating (Ci) Direct Timeof-flight (Dtof) Lidar Pixel Accumulation Transimpedance Amplifier (Tia)
DOI10.1109/JSSC.2024.3440475
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:001297355600001
PublisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855-4141
Scopus ID2-s2.0-85207414115
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Citation statistics
Document TypeJournal article
CollectionFaculty of Science and Technology
THE STATE KEY LABORATORY OF ANALOG AND MIXED-SIGNAL VLSI (UNIVERSITY OF MACAU)
INSTITUTE OF MICROELECTRONICS
DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Corresponding AuthorMinglei, Zhang
AffiliationState Key Laboratory of Analog and Mixed-Signal VLSI, Institute of Microelectronics, Department of Electrical and Computer Engineering, Faculty of Science and Technology, University of Macau, Macau 999078, China
First Author AffilicationFaculty of Science and Technology
Corresponding Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Zou, Chaorui,Ou, Yaozhong,Zhu, Yan,et al. A 256 x 192-Pixel Direct Time-of-Flight LiDAR Receiver With a Current-Integrating-Based AFE Supporting 240-m-Range Imaging[J]. IEEE Journal of Solid-State Circuits, 2024, 59(11), 3525-3537.
APA Zou, Chaorui., Ou, Yaozhong., Zhu, Yan., Rui P. Martins., Chi-Hang Chan., & Minglei, Zhang (2024). A 256 x 192-Pixel Direct Time-of-Flight LiDAR Receiver With a Current-Integrating-Based AFE Supporting 240-m-Range Imaging. IEEE Journal of Solid-State Circuits, 59(11), 3525-3537.
MLA Zou, Chaorui,et al."A 256 x 192-Pixel Direct Time-of-Flight LiDAR Receiver With a Current-Integrating-Based AFE Supporting 240-m-Range Imaging".IEEE Journal of Solid-State Circuits 59.11(2024):3525-3537.
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