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研究生: 葉烜志
Hsuan-Chin Yeh
論文名稱: 每秒一億六千萬次取樣之十位元連續漸進式類比數位轉換器設計與實現
esign and Implementation of a 10-bit 160-MS/s SAR ADC
指導教授: 鍾勇輝
Yung-Hui Chung
口試委員: 曾偉信
none
范振麟
none
陳亮仁
none
陳筱青
none
學位類別: 碩士
Master
系所名稱: 電資學院 - 電子工程系
Department of Electronic and Computer Engineering
論文出版年: 2016
畢業學年度: 104
語文別: 英文
論文頁數: 61
中文關鍵詞: 類比數位轉換器
外文關鍵詞: ADC
相關次數: 點閱:217下載:19
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  • 本論文實現一個十位元、每秒一億六千萬次取樣之逐漸逼近式類比數位轉換器。為了加速這個類比數位轉換器的操作速度,它使用了一個利用比較器輔助之逐漸逼近式架構。為了避免在它的數位類比轉換器中,使用過大的電容陣列來保持十位元所需的線性度。我使用了一個電容交換技術,使整體電容值可以滿足雜訊要求為限制。為了抵抗對製程、電壓與溫度之變異,本論文使用一個適應性取樣機制。


    This thesis presents a 1.2-V 10-bit 160-MS/s successive approximation register (SAR) analog-to-digital converter (ADC). A comparator-assisted SAR (CA-SAR) ADC architecture is proposed to speed up the ADC operation. To maintain the 10-bit linearity requirement without using a large total capacitance in the capacitive digital-to-analog converter (C-DAC), a capacitor-swapping scheme is used to implement C-DAC for thermal noise limitation. In order to against process, voltage and temperature variations, a adaptive sampler is proposed in this thesis.

    論文摘要 i Abstract ii Contents iii List of Figures v List of Tables vii Chapter 1 Introduction - 1 - 1.1 Introduction of Analog-to Digital Converters - 1 - 1.1.1 Flash ADC - 1 - 1.1.2 SAR ADC - 2 - 1.1.3 Time-Interleaved ADC - 4 - 1.1.4 Pipelined ADC - 5 - 1.2 Fundamentals of Analog-to-Digital Converters - 6 - 1.2.1 Signal-to-Noise Ratio (SNR) - 6 - 1.2.2 Spurious Free Dynamic Range (SFDR) - 6 - 1.2.3 Signal-to-Noise-and-Distortion Ratio (SNDR) - 6 - 1.2.4 Resolution and Effective Number of Bits (ENOB) - 7 - 1.2.5 Differential Nonlinearity (DNL) - 7 - 1.2.6 Integral Nonlinearity (INL) - 8 - 1.2.7 Gain Error - 9 - 1.2.8 Offset - 10 - 1.2.9 Organization of Thesis - 10 - Chapter 2 ADC Architecture - 11 - 2.1 Conventional Architecture - 11 - 2.2 Comparator-Assisted SAR Architecture. - 13 - 2.3 Timing Analysis - 15 - 2.4 Noise Analysis - 16 - 2.5 Capacitor Mismatch - 17 - 2.6 Capacitor-Swapping in C-DAC - 19 - 2.7 Switch-Back Switching in C-DAC - 20 - Chapter 3 Circuit Implementation - 25 - 3.1 Track-and-Hold Circuit - 25 - 3.2 Self-Timed Operation - 28 - 3.3 DAC Array - 30 - 3.3.1 Capacitor Array with Dual-Reference Voltages - 30 - 3.3.2 The Gain-Down Effect - 32 - 3.3.3 Capacitor-Swapping - 33 - 3.3.4 Layout of the Unit Capacitor - 34 - 3.4 Comparator Design - 35 - 3.5 Digital Error Correction - 37 - 3.6 ADSampler - 38 - 3.7 Layout Floor Plan - 40 - CHAPTER 4 Simulation and Measurement Results - 42 - 4.1 Simulation Results - 42 - 4.2 Measurement Setup - 45 - 4.4 Debug and Revision - 52 - 4.4.1 Improved unit capacitor - 53 - 4.4.2 Reference buffer - 53 - 4.4.3 Whole chip layout of the revised version - 55 - 4.4.4 Post-Simulation Result at 160-MS/s - 56 - CHAPTER 5 Conclusions - 58 - References - 59 -

    References

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