使用双比较器架构和逻辑控制计数方法的28mK分辨率, -0.45°C/+0.51°C不准确度的温度传感器
Yubin Xu1,2, Tongyu Luo1,2, Lin Peng1,2
1School of Electronics and Communication Engineering, Guangzhou University, Guangzhou 510006, China.
Micromachines
|August 28, 2025
概括
这项研究引入了一个高精度,低功耗的CMOS温度传感器. 它为先进的电子应用提供了广泛的操作范围和更高的准确性.
科学领域:
- 集成电路
- 传感器技术
- 半导体设备
背景情况:
- 准确的温度监测对于现代电子设备至关重要.
- 现有的传感器往往需要在功耗,距离和精度之间进行权衡.
- CMOS技术提供了一个可扩展的传感器集成平台.
研究的目的:
- 开发一个全CMOS温度传感器,其精度提高,功耗低.
- 为了实现广泛的操作温度范围.
- 提高温度测量的分辨率和准确性.
主要方法:
- 使用MOSFET的I-V特征和自动启动偏差电路.
- 产生温度依赖的补充电压 (CTAT) 和与绝对温度成比例的电压 (PTAT).
- 实现双比较器电压转换器 (VTC) 架构.
- 使用控制逻辑单元进行精确的间隔计数.
主要成果:
- 在温度感应方面实现了高线性和灵敏度.
- 在-40°C到130°C之间,传感器显示不准确度为-0.45°C/+0.51°C (3σ).
- 获得了28mK的高分辨率.
- 在27°C和1V时,已证明503nW的超低功耗.
- 报告的优点 (FoM) 是7.9 pJ·K2.
结论:
- 拟议的全CMOS温度传感器有效地满足了高精度和低功率的要求.
- 新的VTC和控制逻辑设计显著提高了测量精度和分辨率.
- 这种传感器适用于要求高效可靠的温度监测的应用.
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