Chip Design of a High Conversion Rate Time-domain Temperature Sensor with Self-detection
| Autor: | Tsung-Yu Chiang, 蔣宗佑 |
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| Rok vydání: | 2018 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 106 As the development of semiconductor technology, the integrated circuit produces superfluous heat when operating in high circuit density. Thus, a temperature sensor is needed for chip thermal management. In this thesis, a high conversion rate time-domain temperature sensor with self-detection is proposed. Basically, the sensor can produce a temperature-dependent delay time which based on temperature-dependent delay line. Compared with the traditional delay line, the proposed sensor can reduce the transistors and make cost down at the same temperature-dependent delay time. In addition, this thesis also proposes a new self-detection circuit to eliminate the influence of the process variation for the sensor. By comparing the digital temperature value with the reference value, this architecture can provide an automatic self-detection function to recalibrate all circuit. To verify this proposed architecture, this temperature sensor chip with self-detection is implemented with TSMC 0.18 μm 1P6M CMOS technology. The core area of proposed temperature sensor is 0.116 mm2 and the supply voltage is 1.2 V. The whole energy consumption is 1.511 nJ per second at a conversion rate of 146 kHz. The resolution is 0.55℃/bit and a measurement error is within -0.77℃ to 0.69℃ with temperature range from 20℃ to 100℃. The experimental results show that the proposed temperature sensor has the advantages of high conversion rate and low energy consumption which can be applied to SoC thermal management system. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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