A 1.8V 53.4uW CMOS Temperature Sensor with -55°C to 125°C Temperature range and 0.25°C Resolution
| Autor: | Chen, Teng-Cheng, 陳登政 |
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| Rok vydání: | 2010 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 99 A low power and high precision temperature sensing unit is an essential unit in environmental and biomedical temperature sensing application. With the development of Integrated-Circuit(IC) technology, the traditional temperature sensor is not suitable for integrating into low power VLSI circuit. Therefore, how to implement a low voltage, low power temperature sensor which can be easily integrated with advanced SOC is an important research. In this thesis, we implemented a 1.8V 53.4uW CMOS temperature sensor with -55°C to 125°C temperature range and 0.25°C resolution which is realized by TSMC 0.18um process. In this thesis, the temperature sensor is composed of a high linearity analog front-end temperature sensor and backend sigma-delta analog to digital converter. The analog front-end sensor is realized by an all CMOS PTAT to achieve low power and low voltage operation. The backend ADC is composed of a sigma-delta modulator and a Sinc digital filter. This circuit can operate from -55°C to 125° with 0.25 resolutions and consume 53.4uW and 2.67uJ for single data conversion. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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