研究生: |
陳品豪 Pin-Hao Chen |
---|---|
論文名稱: |
採用前景電容校正技術之十六位元逐次漸進式類比數位轉換器設計與實現 Design and Implementation of 16-bit SAR ADC with Foreground Capacitor Calibration Technology |
指導教授: |
鍾勇輝
Yung-Hui Chung |
口試委員: |
陳信樹
Hsin-Shu Chen 陳筱青 Hsiao-Chin Chen 陳伯奇 Poki Chen 鍾勇輝 Yung-Hui Chung |
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: | 2023 |
畢業學年度: | 111 |
語文別: | 中文 |
論文頁數: | 94 |
中文關鍵詞: | 電容校正技術 、逐次漸進式類比數位轉換器 、高解析 |
外文關鍵詞: | Capacitor Calibration Technology, SAR ADC, High Resolution |
相關次數: | 點閱:383 下載:0 |
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本論文提出一個採用電容校正技術之十六位元每秒一百萬次取樣的逐次漸進式類比數位轉換器。對於一個十六位元類比數位轉換器而言,有兩個主要的設計考量。對於雜訊而言,採用靜態前置放大器來抑制比較器所貢獻的雜訊以滿足設計規格。而對於線性度來說本論文採用電容陣列橋接技術降低取樣輸入電容並且達到熱雜訊的規格校正部分為通過 使用數位式電容校正以及電容交換技術來實現。此外,快速二元視窗切換技術被用來輔助電容校正所需要的部份功能,藉由減少不必要的電容切換誤差進一步改善無雜散動態範圍。在台積電的0.18 微米 CMOS 製程下,其晶片面積是 2093平方毫米。在3.3伏特及 1.8伏特 的 操作電壓下,功率消耗為1.427毫瓦。經過電容校正後,在10k赫茲頻率下量測的訊號對雜訊與失真比是 80.32 dB,無雜散動態範圍是93.65 dB,性能指標是 165.7dB。
This thesis is aimed to present a 16-bit successive approximation register analog-to-digital converter (SAR ADC) using capacitor calibration technique. For 16-bit ADCs, there are two main design challenges to conquer. For the noise, the pre-amplifier is proposed to suppress the noise contributed by the comparator to meet specifications. For the linearity, this thesis uses segmented Capacitive Digital-to-Analog Converter (C-DAC) to reduce the sampling capacitor and achieve the specification of the thermal noise. Capacitor calibration and capacitor swapping techniques are proposed to use in the ADC. In addition, the Fast-Binary-Window (FSB) DAC switching scheme is used in this design, and the spurious free dynamic range (SFDR) is improved by eliminating unnecessary capacitor switching errors.
A 16-bit 1MS/s SAR ADC using capacitor calibration technique was implemented in TSMC 180-nm CMOS. The die area of this ADC is2093mm2. It consumes 1.427mW at 3.3 V and 1.8 V supply. After capacitor calibration, at 10kHz, the measured SNDR and SFDR are 80.32 dB and 93.65 dB, respectively. The measured figure of merit (FOM) is 165.7dB.
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