臺灣博碩士論文加值系統

此論文提出適用於積體電路中熱管理之新式智慧型溫度感測器。此次提出的溫度感測器在使用溫度補償之電流源以及一增益級使得二極體連接形式的電晶體和其零溫度效應作為感測裝置以達成高線性以及高輸出範圍。另外採用兩個感測電晶體之間的差值來降低製程瓢移對溫度感測器的影響。原感測電路以及一十位元遞迴式類比至數位轉換器皆設計為符合2.3伏特電壓源以及TSMC 0.35µm CMOS 2P4M標準製程。當溫度從0°C變化至100°C，輸出電壓則以4 mV/°C的變化率從1.19伏特變化至0.79伏特。而線性偏差則介於-0.072 %和0.134%之間。主要溫度感測器的功率消耗為39.24μW。

A new smart CMOS temperature sensor is proposed for thermal management of VLSI system in this thesis. The proposed temperature sensor consists of a diode-connected MOS transistor, a simple temperature independent current stage and amplifier stage. The proposed temperature sensor employs a diode-connected MOS transistor to be sensor device and uses a new simple temperature independent current stage and amplifier stage to achieve high linearity and high output swing, and then uses difference between two sensing transistors to reduce process variation. The prototype circuit with a 10-bit cyclic ADC is designed from a supply of 2.3V in the TSMC 0.35µm CMOS 2P4M standard process. The output voltage swings from 1.19V to 0.79V when the temperature rises from 0°C to 100°C. When the linearity deviation is between -0.072％ and 0.134％ with a gain of 4 mV/°C, the power consumption is about 39.24μW.

摘要 i
ABSTRACT ii
Acknowledgements iii
List of Contents iv
List of Figures vi
List of Tables ix
Chapter 1 1
Introduction 1
1.1 Motivation 1
1.2 Types of Temperature Sensor 3
1.3 The Specification of the Temperature Sensor 5
1.4 Several Types of I.C. Temperature Sensor 6
1.5 Thesis Organization 8
Chapter 2 10
The Design of the Proposed Temperature Sensor 10
2.1 Zero Temperature Coefficients 12
2.2 Effect for Process Variation 13
2.3 Current Source with Temperature Compensation 15
2.4 Topology of the Proposed Temperature Sensor 18
Chapter 3 31
Analog to Digital Converter 31
3.1 The Comparison of ADCs 31
3.2 The Principle of Cyclic ADC 32
3.3 Circuit Design of Cyclic ADC 33
3.4 CMOS Operational Amplifier 36
3.4 Simulation of ADC 40
Chapter 4 47
Measurement 47
4.1 The Test Plan of a Temperature Sensor 47
4.2 The Measurement Results of the Temperature Sensor 52
4.3 The Measurement Results of Cyclic ADC 56
Chapter 5 62
Conclusion and Future Work 62
5.1 Conclusion 62
5.2 Future Work 63
Reference 65

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