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一个CMOS电流模式垂直腔半导体发射激光二极管驱动器用于短距离LiDAR传感器
Xinyue Zhang1,2, Shinhae Choi1,2, Yeojin Chon1,2
1Department of Electronic and Electrical Engineering, Ewha Womans University, Seoul 03760, Republic of Korea.
Sensors (Basel, Switzerland)
|June 19, 2024
概括
为LiDAR传感器开发了一种新的电流模式VCSEL驱动器 (CMVD). 这种驱动器有效地提供精确的调制和偏移电流,通过测量确认模拟结果.
科学领域:
- 电气工程 电气工程
- 光电学是指光电子产品.
- 传感器技术 传感器技术
背景情况:
- 垂直腔表面发射激光器 (VCSEL) 是LiDAR系统中的关键组件.
- 高效和精确的电流驱动器对于LiDAR应用中的最佳VCSEL性能至关重要.
- 现有的驱动器设计可能面临调制电流输送和功耗的限制.
研究的目的:
- 为短距离LiDAR传感器推出一种新的电流模式VCSEL驱动器 (CMVD).
- 为了证明向VCSEL二极管提供同时调制和偏移电流的能力.
- 通过布局后的模拟和实验测量来验证驾驶员的性能.
主要方法:
- 使用180nmCMOS技术实现一个CMVD.
- 利用当前转向逻辑进行精确的当前控制.
- 模拟VCSEL二极管的特定向前偏差电压和系列电阻.
- 布局后的模拟和实验测量以验证性能.
主要成果:
- 在CMVD成功交付调制电流从0.1到10mA和0.1mA偏移电流.
- 布局后的模拟显示了大量的输出脉冲和清晰的眼睛图.
- 测量证实了模拟结果,显示出大量的输出脉冲.
- 该芯片的最大功耗为11mW,来自3.3V电源.
- 核心占据了0.1mm2的紧面积.
结论:
- 开发的CMVD适用于短距离LiDAR传感器应用.
- 电流转向逻辑有效地提供所需的调制和偏移电流.
- 驾驶员的表现通过模拟和测量得到验证,表明其实际可行性.
- 该设计为在LiDAR中驾驶VCSEL提供了低功耗和紧的解决方案.
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