一个可编程的环境光传感器,具有黑暗电流补偿和广泛的动态范围
Nianbo Shi1,2, Jian Yang1,2, Zhixiang Cao1,2
1School of Physics and Electronics, Hunan Normal University, Changsha 410081, China.
Sensors (Basel, Switzerland)
|June 19, 2024
概括
这项研究引入了一个新的可编程环境光传感器,可以延长便携式电子产品的电池寿命. 它具有暗电流补偿和广泛的动态范围,在各种条件下提高性能.
科学领域:
- 集成电路 集成电路
- 传感器技术 传感器技术
- 电子工程 电子工程
背景情况:
- 传统的环境光传感器具有局限性,包括大面积,有限的动态范围和对暗电流影响的敏感性.
- 在便携式电子产品中延长电池寿命是环境光传感器开发的关键驱动力.
研究的目的:
- 提出一个可编程环境光传感器,解决传统设计的局限性.
- 为了实现暗电流补偿和广泛的动态范围以提高性能.
主要方法:
- 使用0.18微米标准CMOS工艺设计和制造可编程环境光传感器.
- 整合了内置的暗电流补偿电路.
- 实现了三种可选择的输出电流增益模式,用于动态范围控制.
主要成果:
- 传感器的功耗较低 (在黑暗环境中为7.7μA),并且在广泛的电压 (2-5V) 和温度 (-40-80°C) 范围内工作.
- 通过有效的暗电流抑制,实现了广泛的动态范围.
- 芯片面积为663微米 × 652微米.
结论:
- 拟议的环境光传感器比传统设计提供了显著的改进.
- 它的性能特性使其非常适合用于便携式电子产品和光光纤光学温度传感器.
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