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
The STM32F10xxx microcontroller family embeds up to three advanced 12-bit ADCs (depending on the device) with a conversion time down to 1 μs. A self-calibration feature is provided to enhance ADC accuracy versus environmental condition changes.
上傳時(shí)間: 2014-12-23
上傳用戶:eastimage
ADC制造商在數(shù)據(jù)手冊中定義ADC性能的方式令人困惑,并且可能會(huì)在應(yīng)用開發(fā)中導(dǎo)致錯(cuò)誤的推斷。最大的困惑也許就是“分辨率”和“精確度”了——即Resolution和Accuracy,這是兩個(gè)不同的參數(shù),卻經(jīng)常被混用,但事實(shí)上,分辨率并不能代表精確度,反之亦然。本文提出并解釋了ADC“分辨率”和“精確度”,它們與動(dòng)態(tài)范圍、噪聲層的關(guān)系,以及在諸如計(jì)量等應(yīng)用中的含義。
上傳時(shí)間: 2013-11-06
上傳用戶:gxrui1991
運(yùn)行典型高速ADC評估板設(shè)置
上傳時(shí)間: 2013-10-22
上傳用戶:ly1994
采用高輸入頻率、高速模數(shù)轉(zhuǎn)換器(ADC)的系統(tǒng)設(shè)計(jì)是一項(xiàng)具挑戰(zhàn)性的任務(wù)。ADC輸入接口設(shè)計(jì)有6個(gè)主要條件:輸入阻抗、輸入驅(qū)動(dòng)、帶寬、通帶平坦度、噪聲和失真。
上傳時(shí)間: 2013-10-21
上傳用戶:chukeey
N+緩沖層設(shè)計(jì)對PT-IGBT器件特性的影響至關(guān)重要。文中利用Silvaco軟件對PT-IGBT的I-V特性進(jìn)行仿真。提取相同電流密度下,不同N+緩沖層摻雜濃度PT-IGBT的通態(tài)壓降,得到了通態(tài)壓降隨N+緩沖層摻雜濃度變化的曲線,該仿真結(jié)果與理論分析一致。對于PT-IGBT結(jié)構(gòu),N+緩沖層濃度及厚度存在最優(yōu)值,只要合理的選取可以有效地降低通態(tài)壓降。
上傳時(shí)間: 2013-11-12
上傳用戶:thesk123
本內(nèi)容提供了FR-E500-CH變頻用戶手冊
上傳時(shí)間: 2013-11-13
上傳用戶:xhz1993
隨著我國通信、電力事業(yè)的發(fā)展,通信、電力網(wǎng)絡(luò)的規(guī)模越來越大,系統(tǒng)越來越復(fù)雜。與之相應(yīng)的對交流供電的可靠性、靈活性、智能化、免維護(hù)越來越重要。在中國通信、電力網(wǎng)絡(luò)中,傳統(tǒng)的交流供電方案是以UPS或單機(jī)式逆變器提供純凈不間斷的交流電源。由于控制技術(shù)的進(jìn)步、完善,(N+X)熱插拔模塊并聯(lián)逆變電源已經(jīng)非常成熟、可靠;在歐美的通信、電力發(fā)達(dá)的國家,各大通信運(yùn)營商、電力供應(yīng)商、軍隊(duì)均大量應(yīng)用了這種更合理的供電方案。與其它方案相比較,(N+X)熱插拔模塊并聯(lián)逆變電源具有以下明顯的優(yōu)點(diǎn)。
標(biāo)簽: 熱插拔 模塊 并聯(lián) 應(yīng)用前景
上傳時(shí)間: 2014-03-24
上傳用戶:alan-ee
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