| 研究生: |
賴柏宇 Lai, Po-Yu |
|---|---|
| 論文名稱: |
用於ADC之單端對雙端轉換及參考電壓電路 Single-Ended-to-Differential and Reference Voltage Circuits for Pipelined ADC |
| 指導教授: |
郭泰豪
Kuo, Tai-Haur |
| 學位類別: |
碩士 Master |
| 系所名稱: |
電機資訊學院 - 電機工程學系 Department of Electrical Engineering |
| 論文出版年: | 2020 |
| 畢業學年度: | 108 |
| 語文別: | 英文 |
| 論文頁數: | 71 |
| 中文關鍵詞: | 單端對雙端轉換器 、參考電壓產生器 、參考電壓補償 |
| 外文關鍵詞: | single-ended-to-differential converter, reference generator, reference voltage compensation |
| 相關次數: | 點閱:55 下載:1 |
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本論文設計一個單端對雙端轉換器與有著補償電路的參考電壓產生器提供導管式類比數位轉換器做使用。雖然許多高效能及高效率的類比數位轉換器在近年被提出,仍缺乏提供業界的特殊應用。於微控制器使用的類比數位轉換器中,同時保有單端與雙端輸入網路是一個特色。另一方面,於晶片上的參考電壓產生器可提供穩定參考電壓以避免類比數位轉換器的效能降低。因此,本論文設計一個高線性度的單端對雙端轉換器來當作輸入網路電路。在考量類比數位轉換器的參考電壓行為後,設計一個有著優秀快速響應的摺疊電壓隨耦器。並根據乘法數位類比轉換器的切換資訊,在切換的時候使用額外電容來補償參考電壓的驟降。本論文設計於90nm的互補型金氧半導體製程,晶片面積為1.49mm2,由模擬結果得知於25MS/s的取樣速度與10.4MHz的輸入頻率下,SNDR可達到72.1dB且總功耗為51.1mW。
This work designs a single-ended-to-differential converter (SDC) and a reference generator with compensation circuit for pipelined ADC. Although many high performance and good efficiency ADCs were proposed in recent years, special application for industrial field is still limited. Characteristic of ADC for microcontroller unit (MCU) usually need both single-ended and differential input pattern. On the other hand, stable reference voltage with on-chip reference generator decrease performance degradation of ADC. Thus, this work design a high linearity SDC as an input network. With consideration of ADC reference voltage behavior, flipped-voltage follower is designed because of its excellent transient response. According to switching information from multiplying DAC (MDAC), auxiliary capacitors compensate voltage drop of reference voltage when switching happen. This work is designed in 90nm CMOS process and occupies an area of 1.49mm2. The total power consumption is 51.1mW and SNDR is 72.1dB at 25MS/s for a 10.4MHz input frequency from simulation results.
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