{"title":"126 dB High Dynamic Range SPAD Frontend for Time of Flight Applications","authors":"Maciej Wojtkiewicz;Bruce Rae;Robert K. Henderson","doi":"10.1109/LPT.2024.3465224","DOIUrl":null,"url":null,"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.","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":"36 21","pages":"1293-1296"},"PeriodicalIF":2.3000,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Photonics Technology Letters","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10684808/","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
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.
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.
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