基于BJT特性的数字温度传感器发展现状及趋势

随着工业物联网趋向数字化、智能化和集成化发展,控制系统需要感知的物理量规模和复杂度都迅速提升。其中数字温度传感器能直接将温度信息转换为数字信号,具有低成本、低功耗、面积小、数字输出等多种优点,可以实时监测系统温度数据,并与反馈机制协同进行反馈调节,目前已经得到广泛应用。在各类数字温度传感器中,基于CMOS工艺寄生三极管(BJT)感温的数字温度传感器在制造工艺上更容易实现,且具有高稳定性和高精度,是工业界产品首选方案。聚焦基于BJT特性实现感温的数字温度传感器,从学术研究成果、工业产品两方面总结其技术路线、发展现状和趋势,为后续温度传感器研究提供参考。

Development Status and Trend of Digital Temperature Sensors Based on BJT Characteristics

With the trend of digitalization, intelligence, and integration in the industrial Internet of Things, the scale and complexity of physical quantities that control systems need to perceive are rapidly increasing. Among them, digital temperature sensors can directly convert temperature information into digital signals, with various advantages such as low cost, low area, low power consumption, small area and digital output. They can monitor system temperature data in real time and cooperate with feedback mechanisms for feedback adjustment. They have been widely used. Among various digital temperature sensors, the digital temperature sensor based on CMOS parasitic transistor (BJT) technology is easier to implement in the manufacturing process, and has high stability and precision, making it the preferred choice for industrial production. This article focuses on the implementation of temperature sensing digital temperature sensors based on BJT characteristics, summarizing their improvement routes, development status, and trends from both academic research achievements and industrial products, providing reference for subsequent temperature sensor research.