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SIGMA-delta

  • 高精度Delta-Sigma A/D轉(zhuǎn)換器原理及其應(yīng)用

    本次在線座談主要介紹TI的高精度Delta-Sigma A/D轉(zhuǎn)換器的原理及其應(yīng)用,Delta-Sigma A/D轉(zhuǎn)換器在稱重儀器中,大量采用比例測量方法。

    標(biāo)簽: Delta-Sigma 高精度 轉(zhuǎn)換器

    上傳時間: 2013-10-17

    上傳用戶:zhqzal1014

  • Easy-to-Use, Ultra-Tiny, Differential, 16-Bit Delta Sigma ADC With I2C Interface The LTC2453 is an

    Easy-to-Use, Ultra-Tiny, Differential, 16-Bit Delta Sigma ADC With I2C Interface The LTC2453 is an ultra-tiny, fully differential, 16-bit, analog-to-digital converter. The LTC2453 uses a single 2.7V to 5.5V supply and communicates through an I2C interface. The ADC is available in an 8-pin, 3mm x 2mm DFN package. It includes an integrated oscillator that does not require any external components. It uses a delta-sigma modulator as a converter core and has no latency for multiplexed applications. The LTC2453 includes a proprietary input sampling scheme that reduces the average input sampling current several orders of magnitude lower than conventional delta-sigma converters. Additionally, due to its architecture, there is negligible current leakage between the input pins.

    標(biāo)簽: Differential Easy-to-Use Ultra-Tiny Interface

    上傳時間: 2014-01-08

    上傳用戶:鳳臨西北

  • Oversampling Delta-Sigma Data Converters

    Oversampling Delta-Sigma Data Converters

    標(biāo)簽: Oversampling Delta-Sigma Converters Data

    上傳時間: 2013-12-23

    上傳用戶:1583060504

  • Intro to Delta Sigma and PWM

    Intro to Delta Sigma and PWM

    標(biāo)簽: Intro Delta Sigma PWM

    上傳時間: 2017-05-12

    上傳用戶:1109003457

  • Delta-sigma ADC principle

    關(guān)于delta sigma 共總原理,非常有用的東西

    標(biāo)簽: Delta sigma

    上傳時間: 2015-04-14

    上傳用戶:憂郁王子

  • 基于Delta逆變技術(shù)的串聯(lián)補(bǔ)償式交流穩(wěn)壓電源的研究.rar

    當(dāng)今高新技術(shù)不斷發(fā)展,越來越多的高精度儀器設(shè)備對輸入電源,特別是對輸入交流電源的穩(wěn)壓精度要求越來越高。與此同時,隨著我國經(jīng)濟(jì)的發(fā)展和用電負(fù)載的急劇增加,電壓波動和波形畸變等供電質(zhì)量問題日趨突出,不能滿足高精度儀器設(shè)備的需要,因而就需要在電網(wǎng)和這些設(shè)備之間增加高穩(wěn)壓精度、寬穩(wěn)壓范圍的交流穩(wěn)壓電源。基于Delta逆變技術(shù)的交流穩(wěn)壓電源既能進(jìn)行瞬時的交流電壓穩(wěn)定補(bǔ)償,又能提高整流輸入端的功率因數(shù),減少諧波對電網(wǎng)的污染,因而具有重要的實(shí)際意義和研究價(jià)值。 本文采取串聯(lián)補(bǔ)償型變換器作為主電路的拓?fù)浣Y(jié)構(gòu),并從能量雙向傳輸方面對主電路進(jìn)行了詳細(xì)闡述。針對Delta逆變器工作特點(diǎn)對交流穩(wěn)壓電源的工作原理進(jìn)行了分析,并提出一種正向補(bǔ)償采取整流加高頻斬波,負(fù)向補(bǔ)償采取有源箝位Buck變換器的工作模式。建立Delta逆變器與電網(wǎng)相互作用的等效電路模型,得出了理想補(bǔ)償電壓與實(shí)際補(bǔ)償電壓定量關(guān)系式,分析了逆變輸出濾波器的結(jié)構(gòu)、位置對濾波效果的影響和電氣參數(shù)對實(shí)際補(bǔ)償效果的作用規(guī)律。完成了逆變器的輸出濾波器、補(bǔ)償變壓器的設(shè)計(jì)和PWM整流器電容參數(shù)的計(jì)算。 針對穩(wěn)壓系統(tǒng)中Delta逆變器和PWM整流器兩個主體環(huán)節(jié),對Delta逆變器的前饋、反饋控制特性和PWM整流器的間接、直接電流控制特性分別進(jìn)行了綜合比較,并應(yīng)用MATLAB軟件建立了改進(jìn)前饋控制與直接電流控制的仿真模型,對Delta逆變交流穩(wěn)壓速度和精度進(jìn)行了系統(tǒng)仿真分析,給出了仿真波形,驗(yàn)證了文中所述控制策略的可行性。

    標(biāo)簽: Delta 逆變技術(shù) 串聯(lián)補(bǔ)償

    上傳時間: 2013-07-10

    上傳用戶:1047385479

  • MICRF102中文資料,數(shù)據(jù)手冊

    Sampling Delta-Sigma Audio DACMICRF102是Micrel公司新近推出的遠(yuǎn)距離無線數(shù)據(jù)發(fā)射芯片。該芯片采用Micrel公司最新的快速無線傳輸技術(shù),可實(shí)現(xiàn)真正的“數(shù)

    標(biāo)簽: MICRF 102 數(shù)據(jù)手冊

    上傳時間: 2013-04-24

    上傳用戶:hebmuljb

  • 用fpga實(shí)現(xiàn)的DA轉(zhuǎn)換器

    用fpga實(shí)現(xiàn)的DA轉(zhuǎn)換器,有說明和源碼,VDHL文件。\\r\\nA PLD Based Delta-Sigma DAC\\r\\nDelta-Sigma modulation is the simple, yet powerful,\\r\\ntechnique responsible for the extraordinary\\r\\nperformance and low cost of today s audio CD\\r\\nplayers. The simplest Delta-Sigm

    標(biāo)簽: fpga DA轉(zhuǎn)換器

    上傳時間: 2013-08-22

    上傳用戶:dudu1210004

  • 音頻數(shù)模轉(zhuǎn)換器DAC抖動的靈敏度分析

    Abstract: This application note describes how sampling clock jitter (time interval error or "TIE jitter") affectsthe performance of delta-sigma digital-to-analog converters (DACs). New insights explain the importanceof separately specifying low-frequency (< 2x passband frequency) and high-frequency or wideband (> 2xpassband frequency) jitter tolerance in these devices. The article also provides an application example ofa simple highly jittered cycle-skipped sampling clock and describes a method for generating a properbroadband jittered clock. The document then goes on to compare Maxim's audio DAC jitter tolerance tocompetitor audio DACs. Maxim's exceptionally high jitter tolerance allows very simple and low-cost sampleclock implementations.

    標(biāo)簽: DAC 音頻 數(shù)模轉(zhuǎn)換器 抖動

    上傳時間: 2013-10-25

    上傳用戶:banyou

  • 了解模數(shù)轉(zhuǎn)換器的噪聲、ENOB

    Abstract: Specifications such as noise, effective number of bits (ENOB), effective resolution, and noise-free resolution inlarge part define how accurate an ADC really is. Consequently, understanding the performance metrics related to noise isone of the most difficult aspects of transitioning from a SAR to a delta-sigma ADC. With the current demand for higherresolution, designers must develop a better understanding of ADC noise, ENOB, effective resolution, and signal-to-noiseratio (SNR). This application note helps that understanding.

    標(biāo)簽: ENOB 模數(shù)轉(zhuǎn)換器

    上傳時間: 2013-10-16

    上傳用戶:x18010875091

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