电子学报2025，Vol.53Issue(1)：94-104,11.DOI:10.12263/DZXB.20240423
应用于超大面阵高速图像传感器的双反馈环路列级缓冲技术研究
Dual-Feedback Loop Column Buffering Technology for Ultra-Large Area High-Speed Image Sensors
摘要
Abstract
The column-level readout circuit is the most obvious way to improve the readout efficiency of planar image sensors,but for the high-speed readout of large data and large loads on one hundred million of pixels,the design of column buffer in the parallel-serial conversion from column level to output level faces great challenges.In this paper,we propose a dual-feedback loop column buffer design method,which effectively suppresses the impact of the oversized para-sitic parameters of the column bus on the setup time by implementing a dual-feedback loop between the proximal and distal outputs of the column buffer,and at the same time ensures the accuracy of the analogue signals under low-noise and high-dynamic conditions.Based on 55 nm complementary metal oxide semiconductor(CMOS)process,it has been successfully applied in a 12 288×12 288 pixel scale infrared image sensor.The results show that compared with the traditional column buffer,the dual-feedback loop column buffer proposed in this paper can shorten the rise build-up time by 23.4%,the fall build-up time by 21.9%,and the frame rate of one hundred million-level high-speed image sensor can be improved by more than 29.6%.关键词
图像传感器/帧率提升/高速读出/列级缓冲/输出总线/寄生参数Key words
image sensors/frame rate improvement/high-speed readout/column buffer/output bus/parasitic param-eters分类
信息技术与安全科学引用本文复制引用
刘绥阳,郭仲杰,许睿明,余宁梅..应用于超大面阵高速图像传感器的双反馈环路列级缓冲技术研究[J].电子学报,2025,53(1):94-104,11.基金项目
国家自然科学基金(No.62171367) （No.62171367）
陕西省创新能力支撑计划项目(No.2022TD-39) National Natural Science Foundation of China(No.62171367) （No.2022TD-39）
Shaanxi Province Innovation Capability Support Plan(No.2022TD-39) （No.2022TD-39）
