In this paper, I describe a low-voltage and low-power temperature sensor circuit with digital interface. The propose circuit consists of a temperature sensing circuit and digital interface circuit. The both circuits are capable of operating at 1.0 V. The propose temperature sensing circuit utilized subthreshold region of MOSFETs. And the propose digital interface circuit converts a current into a time utilizes Current-to-Time Converter (ITC). This digital interface has good characteristics against the temperature dependence, and it does not use approximations. Therefore, these can convert temperatures into digital values accurately. From the evaluation using HSPICE, we could obtain the signals proportional to temperature. Furthermore, I fabricated prototype-chips of temperature sensing circuit on the 0.6 μm CMOS processes, and evaluated it. As the results, I confirmed effectiveness of the proposed circuit.
雑誌名
宮崎大學工學部紀要
巻
41
ページ
85 - 92
発行年
2012-07-30
出版者
宮崎大学工学部
Faculty of Engineering, University of Miyazaki
リポジトリのご案内
ディジタルインターフェースを備えた低電圧、低消費電力温度センサー回路
engineering41_85-92.pdf
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