Abstract: This document explains how the Cupertino (MAXREFDES5#) subsystem reference Design meets the higher resolution, higher voltage,and isolation needs of industrial control and industrial automation applications. Hardware and firmware Design files as well as FFTs andhistograms from lab measurements are provided.
上傳時間： 2013-10-21
上傳用戶：mnacyf
Industrial systems demand semiconductors that are precise, flexibleand reliable. Linear Technology offers a broad line of high performanceanalog ICs that simplify system Design with rugged devices featuringparameters fully guaranteed over the -40°C to 85°C temperature range.We back this up with knowledgeable applications support, long productlife cycles and superior on-time delivery.
上傳時間： 2013-11-02
上傳用戶：xiaodu1124
微弱信號檢測裝置 四川理工學(xué)院 劉鵬飛、梁天德、曾學(xué)明 摘要： 本設(shè)計以TI的Launch Pad為核心板，采用鎖相放大技術(shù)設(shè)計并制作了一套微弱信號檢測裝置，用以檢測在強噪聲背景下已知頻率微弱正弦波信號的幅度值，并在液晶屏上數(shù)字顯示出所測信號相應(yīng)的幅度值。實驗結(jié)果顯示其抗干擾能力強，測量精度高。 關(guān)鍵詞：強噪聲；微弱信號；鎖相放大；Launch Pad Abstract: This Design is based on the Launch Pad of TI core board, using a lock-in amplifier technique Designed and produced a weak signal detection device, to measure the known frequency sine wave signal amplitude values of the weak in the high noise background, and shows the measured signal amplitude of the corresponding value in the liquid crystal screen. Test results showed that it has high accuracy and strong anti-jamming capability. Keywords: weak signal detection; lock-in-amplifier; Launch Pad 1、引言 隨著現(xiàn)代科學(xué)技術(shù)的發(fā)展，在科研與生產(chǎn)過程中人們越來越需要從復(fù)雜高強度的噪聲中檢測出有用的微弱信號，因此對微弱信號的檢測成為當(dāng)前科研的熱點。微弱信號并不意味著信號幅度小，而是指被噪聲淹沒的信號，“微弱”也僅是相對于噪聲而言的。只有在有效抑制噪聲的條件下有選擇的放大微弱信號的幅度，才能提取出有用信號。微弱信號檢測技術(shù)的應(yīng)用相當(dāng)廣泛，在生物醫(yī)學(xué)、光學(xué)、電學(xué)、材料科學(xué)等相關(guān)領(lǐng)域顯得愈發(fā)重要。 2、方案論證 針對微弱信號的檢測的方法有很多，比如濾波法、取樣積分器、鎖相放大器等。下面就針對這幾種方法做一簡要說明。 方案一：濾波法。 在大部分的檢測儀器中都要用到濾波方法對模擬信號進行一定的處理，例如隔離直流分量，改善信號波形，防止離散化時的波形混疊，克服噪聲的不利影響，提高信噪比等。常用的噪聲濾波器有：帶通、帶阻、高通、低通等。但是濾波方法檢測信號不能用于信號頻譜與噪聲頻譜重疊的情況，有其局限性。雖然可以對濾波器的通頻帶進行調(diào)節(jié)，但其噪聲抑制能力有限，同時其準(zhǔn)確性與穩(wěn)定性將大打折扣。
標(biāo)簽： 2012 TI 電子設(shè)計大賽 微弱信號
上傳時間： 2013-11-04
上傳用戶：lty6899826
Abstract: Many digital devices incorporate analog circuits. For instance, microprocessors, applicationspecificintegrated circuits (ASICs), and field-programmable gate arrays (FPGAs) may have internalvoltage references, analog-to-digital converters (ADCs) or digital-to-analog converters (DACs). However,there are challenges when you integrate more analog onto a digital Design. As with all things in life, inelectronics we must always trade one parameter for another, with the application dictating the propertrade-off of analog function. In this application note, we examine how the demand for economy of spaceand cost pushes analog circuits onto digital substrates, and what Design challenges emerge.
標(biāo)簽： 模擬IC 性能 模擬 數(shù)字化設(shè)計
上傳時間： 2013-11-17
上傳用戶：菁菁聆聽
The trend in ADCs and DACs is toward higher speeds and higher resolutions atreduced power levels. Modern data converters generally operate on ±5V (dualsupply) or +5V (single supply). In fact, many new converters operate on a single +3Vsupply. This trend has created a number of Design and applications problems whichwere much less important in earlier data converters, where ±15V supplies and ±10Vinput ranges were the standard.
標(biāo)簽： ADC 信號調(diào)節(jié) 傳感器
上傳時間： 2013-11-16
上傳用戶：sjw920325
Abstract: This application note describes how to Design boost converters using the MAX17597 peakcurrent-mode controller. Boost converters can be operated in discontinuous conduction mode (DCM) orcontinuous conduction mode (CCM). This operating mode can affect the component choices, stress levelin power devices, and controller Design. Formulas for calculating component values and ratingsare alsopresented.
標(biāo)簽： 17597 MAX 如何設(shè)計 升壓轉(zhuǎn)換器
上傳時間： 2013-11-16
上傳用戶：zcs023047
The MAX2870 ultra-wideband phase-locked loop (PLL) and voltagecontrol oscillator (VCO) can operate in both integer-N and fractional-Nmodes, similar to the Analog Devices ADF4350 wideband synthesizer.This application note compares the MAX2870 and ADF4350 registers andloop filter Design in detail. Users who already familiar with ADF4350 canuse this application note as a quick Design reference.
標(biāo)簽： 寄存器 環(huán)路濾波器
上傳時間： 2014-12-23
上傳用戶：變形金剛
Abstract: What can be simpler than Designing with CMOS and BiCMOS? These technologies are very easy to use butthey still require careful Design. This tutorial discusses the odd case of circuits that seem to work but exhibit somepeculiar behaviors—including burning the Designer's fingers!
上傳時間： 2013-11-03
上傳用戶：dick_sh
Abstract: Alexander Graham Bell patented twisted pair wires in 1881. We still use them today because they work so well. In addition we have the advantage ofincredible computer power within our world. Circuit simulators and filter Design programs are available for little or no cost. We combine the twisted pair and lowpassfilters to produce spectacular rejection of radio frequency interference (RFI) and electromagnetic interference (EMI). We also illustrate use of a precision resistorarray to produce a customizable differential amplifier. The precision resistors set the gain and common mode rejection ratios, while we choose the frequencyresponse.
上傳時間： 2014-11-26
上傳用戶：Vici
Abstract: This reference Design provides a complete demonstration platform for using industrial/scientific/medical radio frequency
上傳時間： 2013-11-09
上傳用戶：LP06
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