自然界中溫度為一個重要資訊，所以一個能夠因應環境變化作出準確且迅速反應的晶片有其必要性，此外若使用獵能技術，利用大自然中的能量，將能夠延長感測器的運作時間，因此本研究目標為實現一個以光能做為能量來源，不須任何外部輸入訊號或時脈，即可以自行偵測溫度的智慧型溫度感測晶片。
本晶片使用台灣積體電路公司(TSMC)提供之0.18μm 1P6M Mixed-signal Standard CMOS製程，內包含升壓型轉換器、最大功率點追蹤控制器、BJT型溫度感測電路和10位元連續漸近式類比數位轉換器，能夠量測-20℃~80℃，解析度約為0.17℃，運作週期為1.3秒，每次運作時間約為58.6µs，運作時平均消耗62.5µA，FOM為1.12 nJ℃。

In this thesis, a temperature sensing chip with built-in energy harvester is proposed. This chip includes a boost dc-dc converter, maximum power point tracking controller (MPPT controller), BJT-based temperature sensing circuit and SAR ADC. First, the boost converter and MPPT controller are used to harvest power from photovoltaic cells (PV cells), make the PV cells work on their maximum power point, and provide a stable output voltage. Then, this stable output voltage is used to power up the temperature sensing circuit. With the stable system voltage, BJT sensor converts the temperature to voltage. Afterward, gain stage amplifies the temperature-related voltage. Finally, the sensed temperature-related analog voltage is converted to digital codes and outputted.
This chip is fabricated by TSMC 0.18μm 1P6M Mixed-signal Standard CMOS process and the chip area is 2.04mm2. According to the measured results, it could measure temperature from -20 degree Celsius to 80 degree Celsius with 0.17℃ resolution. Besides, this chip senses temperature every 1.3 second, its operation time is about 58.6µs, and its FOM is only 1.12nJ/℃.

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