爆发模式20Mfps低噪音CMOS图像传感器的设计和特征
1Thayer School of Engineering at Dartmouth, Dartmouth College, Hanover, NH 03755, USA.
Sensors (Basel, Switzerland)
|July 29, 2023
概括
这项研究引入了一个新的CMOS图像传感器 (CIS),具有超高速度和低噪声. 优化的像素实现了创纪录的低噪声 (5.1 e-rms) 和高转换收益 (183 μV/e-) 使用新的电荷扫描传输门.
科学领域:
- 固态物理 固态物理
- 电气工程 电气工程 电气工程
- 材料科学 是一种材料科学.
背景情况:
- 在数字成像应用中,CMOS图像传感器 (CIS) 是至关重要的.
- 现有的CIS技术在速度,噪音和转换增益方面面临限制.
- 需要先进的CIS架构来满足对高性能成像的日益增长的需求.
研究的目的:
- 开发一种新的超高速,高转换效率,低噪音的CIS.
- 在标准的180nmCIS过程中实现电荷扫描传输门.
- 为了优化光二极管几何和门结构,以提高性能.
主要方法:
- 使用电荷扫描传输门,以快速传输电荷 (<10 ns).
- 优化光二极管几何学,以提高光敏度和降低噪音.
- 通过先进的门结构设计,降低浮式扩散电容.
- 在没有修改的标准180nmCIS过程中实施.
主要成果:
- 实现了超高速度,电荷传输时间低于10 ns.
- 证明了183μV/e-的高转换增益.
- 达到了5.1 e-rms. 的最低报告噪音水平.
- 成功设计,挂带,并描述了一个概念验证CIS.
结论:
- 具有充电扫描传输门的新型CIS架构提供了显著的性能改进.
- 优化的光二极管几何和门结构是实现低噪声和高转换收益的关键.
- 这项技术提升了CMOS图像传感器的功能,用于要求高的应用.
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