關(guān)于pineline ADC的設(shè)計(jì)文獻(xiàn)
標(biāo)簽: Pipeline ADC 帶隙 電壓基準(zhǔn)源
上傳時(shí)間: 2013-11-24
上傳用戶:iven
Abstract: This design idea explains how to implement an 8-bit analog-to-digital converter (ADC), using a microcontroller
標(biāo)簽: ADC 8位 模擬數(shù)字轉(zhuǎn)換器 設(shè)計(jì)實(shí)現(xiàn)
上傳時(shí)間: 2013-10-30
上傳用戶:愛(ài)死愛(ài)死
行為級(jí)仿真是提高流水線(Pipeline)ADC設(shè)計(jì)效率的重要手段。建立精確的行為級(jí)模型是進(jìn)行行為級(jí)仿真的關(guān)鍵。本文采用基于電路宏模型技術(shù)的運(yùn)算放大器模型,構(gòu)建了流水線ADC的行為級(jí)模型并進(jìn)行仿真。為驗(yàn)證提出模型的精度,以一個(gè)7位流水線ADC為例,分別進(jìn)行了電路級(jí)與行為級(jí)的仿真,并做了對(duì)比。結(jié)果表明這樣構(gòu)建的行為級(jí)模型能較好地反映實(shí)際電路的特性,同時(shí)仿真時(shí)間大大縮短。
上傳時(shí)間: 2013-10-18
上傳用戶:zsjinju
Abstract: The DS4830 optical microcontroller's analog-to-digital converter (ADC) offset can change with temperature and gainselection. However, the DS4830 allows users to measure the ADC internal offset. The measured ADC offset is added to the ADCoffset register to nullify the offset error. This application note demonstrates the DS4830's ADC internal offset calibration in theapplication program.
標(biāo)簽: 4830 ADC DS 校準(zhǔn)
上傳時(shí)間: 2014-12-23
上傳用戶:萍水相逢
越柬越多的應(yīng)用 例如過(guò)程控制、稱重等 都需要高分辨率、高集成度和低價(jià)格的ADC。 新型Σ .△轉(zhuǎn)換技術(shù)恰好可以滿足這些要求 然而, 很多設(shè)計(jì)者對(duì)于這種轉(zhuǎn)換技術(shù)并不 分了解, 因而更愿意選用傳統(tǒng)的逐次比較ADC Σ.A轉(zhuǎn)換器中的模擬部分非常簡(jiǎn)單(類似j 個(gè)Ibit ADC), 而數(shù)字部分要復(fù)雜得多, 按照功能町劃分為數(shù)字濾波和抽取單元 由于更接近r 個(gè)數(shù)字器件,Σ △ADC的制造成本非常低廉.
標(biāo)簽: ADC
上傳時(shí)間: 2013-10-24
上傳用戶:han_zh
將模擬信號(hào)轉(zhuǎn)換為數(shù)字信號(hào)后再進(jìn)行處理,是當(dāng)前信號(hào)處理普遍使用的方法,模數(shù)轉(zhuǎn)換器(ADC)就是將模擬信號(hào)轉(zhuǎn)換為數(shù)字信號(hào)的器件,所以計(jì)算其有效轉(zhuǎn)換位數(shù)對(duì)系統(tǒng)性能評(píng)估就顯得尤為重要。文中結(jié)合項(xiàng)目工程實(shí)踐,討論了ADC有效轉(zhuǎn)換位數(shù)的兩種測(cè)試方法:噪聲測(cè)試法和信噪比測(cè)試法,并對(duì)兩種方法進(jìn)行了仿真與分析。
標(biāo)簽: ADC 模數(shù)轉(zhuǎn)換器 計(jì)算
上傳時(shí)間: 2013-12-17
上傳用戶:1184599859
交調(diào)失真(IMD)是用于衡量放大器、增益模塊、混頻器和其他射頻元件線性度的一項(xiàng)常用指標(biāo)。二階和三階交調(diào)截點(diǎn)(IP2和IP3)是這些規(guī)格參數(shù)的品質(zhì)因素,以其為基礎(chǔ)可以計(jì)算不同信號(hào)幅度下的失真積。雖然射頻工程師們非常熟悉這些規(guī)格參數(shù),但當(dāng)將其用于ADC時(shí)往往會(huì)產(chǎn)生一些困惑。本教程首先在ADC的框架下對(duì)交調(diào)失真進(jìn)行定義,然后指出將IP2和IP3的定義應(yīng)用于ADC時(shí)必須采取的一些預(yù)防措施。
標(biāo)簽: ADC 交調(diào)失真
上傳時(shí)間: 2014-01-07
上傳用戶:歸海惜雪
High input impedance and a wide input range are twohighly desirable features in a precision analog-to-digitalconverter, and the LTC®2449 delta-sigma ADC has both.With just a few external components, the LTC2449 formsan exceptional measurement system with very high inputimpedance and an input range that extends 300mV beyondthe supply rails.
上傳時(shí)間: 2013-11-02
上傳用戶:ywcftc277
The 14-bit LTC2351-14 is a 1.5Msps, low power SARADC with six simultaneously sampled differential inputchannels. It operates from a single 3V supply and featuressix independent sample-and-hold amplifi ers and a singleADC. The single ADC with multiple S/HAs enables excellentrange match (1mV) between channels and channel-tochannelskew (200ps).
上傳時(shí)間: 2014-12-23
上傳用戶:天誠(chéng)24
Many 8-bit and 16-bit microcontrollers feature 10-bitinternal ADCs. A few include 12-bit ADCs, but these oftenhave poor or nonexistent AC specifi cations, and certainlylack the performance to meet the needs of an increasingnumber of applications. The LTC®2366 and its slowerspeed versions offer a high performance alternative, asshown in the AC specifi cations in Table 1. Compare theseguaranteed specifi cations with the ADC built into yourcurrent microcontroller.
上傳時(shí)間: 2013-10-26
上傳用戶:jackandlee
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