126 dB High Dynamic Range SPAD Frontend for Time of Flight Applications

IF 2.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Technology Letters Pub Date : 2024-09-20 DOI:10.1109/LPT.2024.3465224

Maciej Wojtkiewicz;Bruce Rae;Robert K. Henderson

引用次数: 0

Abstract

This letter presents a compact pixel frontend utilizing thin-oxide-only transistors paired with RC-coupled SPAD manufactured in a 3D-stacked technology. The frontend employs an optimized CMOS inverter operated close to its threshold to improve the sensitivity to low-amplitude SPAD pulses observed in a high light conditions close to device paralysis. This allows to achieve a dynamic range of 126dB and a maximum count rate of 117 Mcps ideal for automotive LiDAR or other ToF applications requiring tolerance to high background irradiance levels.

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用于飞行时间应用的 126 dB 高动态范围 SPAD 前端

这篇文章介绍了一种紧凑型像素前端，它采用三维堆叠技术制造，使用与 RC 耦合 SPAD 配对的纯氧化物薄膜晶体管。该前端采用优化的 CMOS 反相器，在接近阈值时工作，以提高在接近器件瘫痪的高光条件下观察到的低振幅 SPAD 脉冲的灵敏度。这使得动态范围达到 126dB，最大计数率达到 117 Mcps，非常适合汽车激光雷达或其他需要耐受高背景辐照度的 ToF 应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Photonics Technology Letters 工程技术-工程：电子与电气

CiteScore

5.00

自引率

3.80%

发文量

404

审稿时长

2.0 months

期刊介绍： IEEE Photonics Technology Letters addresses all aspects of the IEEE Photonics Society Constitutional Field of Interest with emphasis on photonic/lightwave components and applications, laser physics and systems and laser/electro-optics technology. Examples of subject areas for the above areas of concentration are integrated optic and optoelectronic devices, high-power laser arrays (e.g. diode, CO2), free electron lasers, solid, state lasers, laser materials'' interactions and femtosecond laser techniques. The letters journal publishes engineering, applied physics and physics oriented papers. Emphasis is on rapid publication of timely manuscripts. A goal is to provide a focal point of quality engineering-oriented papers in the electro-optics field not found in other rapid-publication journals.