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Adc-DAC

  • 高集成四通道工業(yè)控制應(yīng)用的電壓輸出DAC

      Digital-to-analog converters (DACs) are prevalent inindustrial control and automated test applications.General-purpose automated test equipment often requiresmany channels of precisely controlled voltagesthat span several voltage ranges. The LTC2704 is ahighly integrated 16-bit, 4-channel DAC for high-endapplications. It has a wide range of features designed toincrease performance and simplify design.

    標(biāo)簽: DAC 集成 四通道 工業(yè)

    上傳時(shí)間: 2013-11-22

    上傳用戶:元宵漢堡包

  • DN426 6通道工業(yè)監(jiān)控應(yīng)用的SAR ADC

      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).

    標(biāo)簽: 426 ADC SAR DN

    上傳時(shí)間: 2014-12-23

    上傳用戶:天誠24

  • 將您的微控制器ADC升級(jí)至真正的12位性能

      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.

    標(biāo)簽: ADC 微控制器 性能

    上傳時(shí)間: 2013-10-26

    上傳用戶:jackandlee

  • STM32F10xxx設(shè)備中如何得到高精度ADC

    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.

    標(biāo)簽: STM 32F F10 ADC

    上傳時(shí)間: 2014-12-23

    上傳用戶:eastimage

  • ADC中精確度與分辨率認(rèn)識(shí)

        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。

    標(biāo)簽: ADC 精確度 分辨率

    上傳時(shí)間: 2013-11-06

    上傳用戶:gxrui1991

  • ADC的九個(gè)關(guān)鍵指標(biāo)

        模擬轉(zhuǎn)換器性能不只依賴分辨率規(guī)格   大量的模數(shù)轉(zhuǎn)換器(ADC)使人們難以選擇最適合某種特定應(yīng)用的ADC器件。工程師們選擇ADC時(shí),通常只注重位數(shù)、信噪比(SNR)、諧波性能,但是其它規(guī)格也同樣重要。本文將介紹ADC器件最易受到忽視的九項(xiàng)規(guī)格,并說明它們是如何影響ADC性能的。   1. SNR比分辨率更為重要。   ADC規(guī)格中最常見的是所提供的分辨率,其實(shí)該規(guī)格并不能表明ADC器件的任何能力。但可以用位數(shù)n來計(jì)算ADC的理論SNR:   不 過工程師也許并不知道,熱噪聲、時(shí)鐘抖動(dòng)、差分非線性(DNL)誤差以及其它參數(shù)異常都會(huì)限制ADC器件的SNR。對于高性能高分辨率轉(zhuǎn)換器尤其如此。一 些數(shù)據(jù)表提供有效位數(shù)(ENOB)規(guī)格,它描述了ADC器件所能提供的有效位數(shù)。為了計(jì)算ADC的ENOB值,應(yīng)把測量的SNR值放入上述公式,并求解 n。

    標(biāo)簽: ADC 指標(biāo)

    上傳時(shí)間: 2014-12-22

    上傳用戶:z240529971

  • DAC技術(shù)用語 (D/A Converters Defini

    Differential Nonlinearity: Ideally, any two adjacent digitalcodes correspond to output analog voltages that are exactlyone LSB apart. Differential non-linearity is a measure of theworst case deviation from the ideal 1 LSB step. For example,a DAC with a 1.5 LSB output change for a 1 LSB digital codechange exhibits 1⁄2 LSB differential non-linearity. Differentialnon-linearity may be expressed in fractional bits or as a percentageof full scale. A differential non-linearity greater than1 LSB will lead to a non-monotonic transfer function in aDAC.Gain Error (Full Scale Error): The difference between theoutput voltage (or current) with full scale input code and theideal voltage (or current) that should exist with a full scale inputcode.Gain Temperature Coefficient (Full Scale TemperatureCoefficient): Change in gain error divided by change in temperature.Usually expressed in parts per million per degreeCelsius (ppm/°C).Integral Nonlinearity (Linearity Error): Worst case deviationfrom the line between the endpoints (zero and full scale).Can be expressed as a percentage of full scale or in fractionof an LSB.LSB (Lease-Significant Bit): In a binary coded system thisis the bit that carries the smallest value or weight. Its value isthe full scale voltage (or current) divided by 2n, where n is theresolution of the converter.Monotonicity: A monotonic function has a slope whose signdoes not change. A monotonic DAC has an output thatchanges in the same direction (or remains constant) for eachincrease in the input code. the converse is true for decreasing codes.

    標(biāo)簽: Converters Defini DAC

    上傳時(shí)間: 2013-10-30

    上傳用戶:stvnash

  • 運(yùn)行典型高速ADC評(píng)估板設(shè)置

    運(yùn)行典型高速ADC評(píng)估板設(shè)置

    標(biāo)簽: ADC 運(yùn)行 典型 評(píng)估板

    上傳時(shí)間: 2013-10-22

    上傳用戶:ly1994

  • 高速ADC模擬輸入接口考慮

    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。

    標(biāo)簽: ADC 模擬輸入 接口

    上傳時(shí)間: 2013-10-21

    上傳用戶:chukeey

  • AVR單片機(jī)DAC范例程序

    atmage16單片機(jī)DAC范例程序

    標(biāo)簽: AVR DAC 單片機(jī) 范例

    上傳時(shí)間: 2014-12-25

    上傳用戶:hzy5825468

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