采用动态分布偏置电路的低电源灵敏度CMOS温度传感器

2022 IEEE International Conference on Integrated Circuits, Technologies and Applications (ICTA) Pub Date : 2022-10-28 DOI:10.1109/ICTA56932.2022.9963102

Shichong Zhai, Wenchang Li, Jian Liu, Tianyi Zhang

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引用次数: 0

摘要

本文提出了一种采用动态分布偏置电路的低电源灵敏度CMOS温度传感器。提出了一种新型的PTAT/REF混合式电流发生器，以降低功率消耗。采用斩波、动态单元匹配和比例曲率校正等技术提高温度传感精度。该传感器采用0.153 μm CMOS工艺设计和仿真，占地0.07 mm2。在-55℃~ 125℃温度范围内，经一点校准后，模拟感温精度为±0.4℃。

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A Low Supply Sensitivity CMOS Temperature Sensor Using Dynamic-Distributing-Bias Circuit

This work presents a low supply sensitivity CMOS temperature sensor using dynamic-distributing-bias circuits. A new hybrid PTAT/REF current generator is proposed to reduce the power consumption. Some techniques such as chopping, dynamic element matching (DEM) and ratiometric curvature correction are adopted to improve the temperature sensing accuracy. The sensor is designed and simulated in 0.153-μm CMOS process and occupies 0.07 mm2 area. In the temperature range of -55°C to 125 °C, the simulated temperature sensing accuracy is ±0.4°C after one-point calibration.

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2022 IEEE International Conference on Integrated Circuits, Technologies and Applications (ICTA)

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