高速高精度A/D轉(zhuǎn)換器
A HIGH-SPEED HIGH-ACCURACY A/D CONVERTER
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摘要: 本文介紹了用于觀測(cè)太陽(yáng)磁場(chǎng)的天文望遠(yuǎn)鏡系統(tǒng)的高速高精度局部級(jí)聯(lián)式多閾值A(chǔ)/D轉(zhuǎn)換器。文章著重討論了,為實(shí)現(xiàn)高速、高精度所采用的技術(shù)要點(diǎn),并提出了研制高速高精度A/D轉(zhuǎn)換器所必須考慮的有關(guān)問題。 我們所研制的A/D轉(zhuǎn)換器,分辨率為1mV,相對(duì)誤差0.025％,字長(zhǎng)12位,前面接采樣保持電路后,速度為10萬次/秒。
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關(guān)鍵詞:
Abstract: A high-speed high-accuracy partially-cascaded A/D converter is developed, which is used with the telescope for observing the solar magnetic field. The major techniques employed for realizing high speed and high accuracy are discussed, and some related factors are also considered.For this converter, the word length is 12bit, the resolution power is 1 mV, the relative accuracy less than 0.025%, and the rate is 100,000 sec-1 when a sampling hold circuit is cascaded in front of it. -
H. Schmid, Electronic Design, 16(1968), 25, 49.[2]H. Schmid, Electronic Design, 16(1968), 26, 57.[3]何同杰,晶體管運(yùn)算放大器設(shè)計(jì)原理,科學(xué)出版社,1974.[4]H. Schmid, Electronic Design. 16(1968), 22, 49.[5]C.R. Pearman and A. E. Popodl, Electronics, 37(1964),28.[7]D. F. Hoeschele, Analog-to-Digital/Digital-to-Analog Conversion Techniques, John Wileg Sons.Inc. 1968.[8]蒲生良治,トラゾンスタ技術(shù),12(1975), 169.[9]兵谷川治郎,定電壓裝置設(shè)計(jì)ハンドブック,日刊工業(yè)新聞社. -
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