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Title: | 一個低功率每秒兩億次取樣,十位元之管線式類比數位轉換器 A Low Power 200MS/s, 10bit Pipelined Analog to Digital Converter |
Authors: | Yi-Chun Hsieh 謝依峻 |
Advisor: | 陳信樹(Hsin-Shu Chen) |
Keyword: | 導管式類比數位轉換器,低功率,高速, pipelined ADC,low-power,high-speed, |
Publication Year : | 2011 |
Degree: | 碩士 |
Abstract: | 在高速、中高解析度類比數位轉換器中,導管式的類比數位轉換器是最常使用一種方式。為了減低功率消耗,許多作品[1], [2], [3], [4]使用電容分享技術。傳統的電容分享技術使用了放電相位來取消回授電容上的電荷。但是放電相位占據放大相位的時間,使得功率消耗上升。此外,傳統的電容分享技術只有使用在第一級。這本作品,放電相位被移除,並且電容分享技術使用在第一級與第二級,所以功率消耗更進一步的減少。
一個1.2V電壓,以90nm的類比數位轉換器在取樣頻率為200MS/s,輸入頻率為1.99MHz的情況下,SNDR為53.14dB。 MOS製程實現的一個每秒兩億次的導管式類比數位轉換器被提出來。在取樣頻率為200MS/s,輸入頻率為99MHz的情況下,SNDR為50.25dB,INL,DNL分別為+1.59/-1.91 LSB,+0.70/-0.75 LSB,。操作在電源電壓為1.2V時,功率消耗為45.4mW。類比數位轉換器所占的面積為0.53 mm2. In high speed, medium-high resolution analog-to-digital converter (ADC), the pipelined architecture is the most common used. To reduce the power consumption, the capacitor-sharing technique is used in [1], [2], [3], [4]. Conventional capacitor-sharing technique employed the discharge phase to cancel the charge on feedback capacitor. However, the discharge phase occupied the amplification phase, and power consumption is raised. In additional, conventional capacitor-sharing technique is also only applied in first stage. In proposed work, the discharge phase is removed, and capacitor-sharing technique is applied to first and second stage; hence the power consumption is further reduced. A 10-bit pipelined ADC with 1.2V, 200MS/s, in 90nm technology is proposed. In 200MS/s with 1.99MHz input, the signal to noise and distortion ratio is 53.14dB. In 200MS/s with 99.9MHz input, the SNDR is 50.25dB. Integral Nonlinearity and differential nonlinearity are +1.59/-1.91 LSB and +0.70/-0.75 LSB respectively. The power consumption is 45.4mW at 1.2V power supply. The ADC occupies an active area of 0.53 mm2. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/48042 |
Fulltext Rights: | 有償授權 |
Appears in Collections: | 電子工程學研究所 |
Files in This Item:
File | Size | Format | |
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ntu-100-1.pdf Restricted Access | 1.77 MB | Adobe PDF |
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