A 320x240 CMOS LiDAR Sensor with 6-Transistor nMOS-Only SPAD Analog Front-End and Area-Efficient Priority Histogram Memory

📋 论文概要

本文提出了一种320x240分辨率的CMOS LiDAR传感器，采用6晶体管nMOS-only SPAD模拟前端和面积高效的优先级直方图存储器，解决了传统机械LiDAR体积大、成本高、不易制造的问题，实现了固态LiDAR系统。

💡 主要创新点

• 使用6晶体管nMOS-only SPAD模拟前端，简化了电路设计并降低了功耗。
• 提出面积高效的优先级直方图存储器，减少了芯片面积，适合高分辨率阵列。
• 实现了320x240的固态LiDAR传感器，无需机械扫描器件，提升了系统集成度。

🏷 关键词

📄 原文摘要

Credited Authors (ECAs) 1 2 Light detection and ranging (LiDAR) systems measure distance with high depth resolution while providing images with the shape of objects. For long-range detection, emitting a concentrated laser is essential. This, in turn, necessitates the use of a laser scanning device to achieve high spatial resolution. Traditional mechanical LiDAR systems, using 1-D SPAD sensors, need devices like polygon or MEMS mirrors for highresolution imaging, yet they are bulky, expensive, and not easily manufactured [1]. Recently, a solid-state LiDAR system, equipped with a VCSEL array as a transmitter and a CMOS depth sensor as a receiver, has emerged. This system can measure direct timeof-flight (dTOF) with a row of pixels, facilitating a column-parallel implementation with

👥 作者与机构

Minkyung Kim*1, Hyeongseok Seo*1,2, Songhyeon Kim1, Jung-Hoon Chun1,2,

Seong-Jin Kim3, Jaehyuk Choi1,2 Sungkyunkwan University, Suwon, Korea SolidVue, Seongnam, Korea 3 Ulsan National Institute of Science and Technology, Ulsan, Korea *Equally