A 95nW ring oscillator-based temperature sensor for RFID tags in 0.13µm CMOS

@article{Park2009A9R,
  title={A 95nW ring oscillator-based temperature sensor for RFID tags in 0.13µm CMOS},
  author={Sunghyun Park and Changwook Min and Seonghwan Cho},
  journal={2009 IEEE International Symposium on Circuits and Systems},
  year={2009},
  pages={1153-1156}
}
In this paper, a ring oscillator-based CMOS temperature sensor with nano-watt power consumption is presented for RFID applications. Unlike conventional temperature sensors based on bandgap reference and ADC that consume large amount of power, the proposed sensor exploits the temperature dependence of the threshold voltage and carrier mobility of MOS transistors that affect the frequency of a ring oscillator. In order to maximize the temperature sensitivity and dynamic range, a supply voltage of… CONTINUE READING

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