电子器件2016，Vol.39Issue(6)：1449-1455,7.DOI:10.3969/j.issn.1005-9490.2016.06.033
采用双振荡器结构的低功耗CMOS温度传感器
Low Power CMOS Temperature Sensor with Dual Oscillator Structure
摘要
Abstract
In order to improve the energy conversion efficiency and reduce power consumption,a CMOS temperature sensor based on dual oscillator is proposed. The temperature sensor is used to generate the frequency with tempera?ture variation ,and the linear degree of the temperature sensor is improved by adjusting the difference of linear frequency. Finally,the digital output of the digital converter is completed by using a frequency digital converter. In addition,a process compensation scheme is also proposed,for a point correction method can improve the accuracy of temperature sensor. Using 65 nm CMOS process,the area is only 0.01 mm2. The test results show that the resolution of the temperature sensor is 0.2℃/LSB,and the maximum error of the 20 measured sample is less than ±1.2℃over range of 0~25 ℃. Compared with other similar sensors ,when the conversion rate is 480 ksample/s ,the power consumption is 500μW. Hence,the energy per conversion is 0.001μJ/sample,which is the lowest value.关键词
温度传感器/双振荡器/制程补偿/低功耗Key words
temperature sensor/dual oscillator/process compensation/low power consumption分类
信息技术与安全科学引用本文复制引用
彭华,王用鑫..采用双振荡器结构的低功耗CMOS温度传感器[J].电子器件,2016,39(6):1449-1455,7.基金项目
重庆市教委科学技术研究项目(KJ1602908) （KJ1602908）
