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通信設(shè)計應(yīng)用
電子發(fā)燒友網(wǎng)本頻道為通信技術(shù)專欄，提供詳細(xì)的通信設(shè)計最新技術(shù)與應(yīng)用；是您學(xué)習(xí)通信技術(shù)知識的好平臺。
新增的Windows NT/2000/XP支持AN3315并
Abstract: This application note is a supplement to two previous application notes, which effectively extend the usage of the parallel-port, 2-wire hardware (presented in AN3230) and software (presented in AN3315) to computers operating on ...
數(shù)字控制移相-Digitally Control Phase
Abstract: The application note describes using a digital potentiometer, passive components such as resistors and capacitors, and an operational amplifier to build a digitally controlled phase-shift circuit. Although written specifically fo...
2009-04-28 標(biāo)簽：控制移相 936
如何添加DS1859溫度讀數(shù)-How to Add an O
Abstract: The purpose of this application note is to show how to apply a temperature offset to the factory calibrated temperature sensor reading of the DS1859. IntroductionThe purpose of this application note i...
2009-04-28 標(biāo)簽：DS1859 995
DS1856內(nèi)部校準(zhǔn)及右移位（可擴展的動態(tài)測距）-DS185
Abstract: This application note explains the internal calibration procedure for the DS1856, and how using this function can be beneficial to the application. The application note also provides procedures for determining and implementing th...
2009-04-28 標(biāo)簽：DS1856 1774
利用DS3906數(shù)字電位器精確控制升壓型DC-DC轉(zhuǎn)換器的輸
摘要：當(dāng)使用DC-DC轉(zhuǎn)換器時，設(shè)計者都要面對一個相同問題：只能得到標(biāo)準(zhǔn)電壓。如果需要校準(zhǔn)或者調(diào)節(jié)輸出電壓，就需要高精度的非標(biāo)準(zhǔn)電阻。本應(yīng)用筆記介紹了在升壓型DC-DC轉(zhuǎn)換...
2009-04-28 標(biāo)簽：轉(zhuǎn)換器DS3906 1948
比較光纖監(jiān)測和控制集成電路
Abstract: This application note presents parts designed for fiber monitoring and optical control. Although the products have a broad range of capabilities, some of those features are most important for the optical control and monitoring ma...
電流源DAC配合PIN二極管，提供RF衰減及溫度補償
摘要：RF衰減是無線設(shè)計中的常見電路，本應(yīng)用筆記詳細(xì)描述了幾種采用PIN二極管和電流源DAC控制RF衰減的方法。 PIN二極管通常作為TV調(diào)諧器中的RF信號以及固定通信設(shè)...
2009-04-28 標(biāo)簽：二極管 865
如何連接DS1862與內(nèi)置APC環(huán)路的激光驅(qū)動器
摘要：本文描述了如何將DS1862 XFP控制和數(shù)字診斷IC與內(nèi)置平均功率控制(APC)環(huán)路的激光驅(qū)動器連接。多數(shù)內(nèi)置APC環(huán)路的激光驅(qū)動器均要求電壓模式接口。本文說明了如何產(chǎn)生這些電壓...
選擇MAXQ2000微控制器和MAX1132 ADC接口的S
摘要：MAXQ2000可采用不同的時鐘模式與MAX1132接口，包括8位、16位或兩者組合。本應(yīng)用筆記說明了如何選擇SPI™時鐘模式，以優(yōu)化MAX1132性能。該應(yīng)用筆記包含了完整的原理圖、微控...
2009-04-28 標(biāo)簽：微控制 1034
IC總線的驗證及實現(xiàn)
摘要：本應(yīng)用筆記簡I²C總線的驗證及實現(xiàn)單回顧了I²C總線的發(fā)展進程，并介紹了I²C配置，以簡化總線上主機與從機之間的通信。應(yīng)用實例提供了原理圖和程序代碼，附錄1...
2009-04-28 標(biāo)簽：總線 1043
利用查詢表執(zhí)行伽瑪校正的發(fā)光二極管-Using Lookup
Abstract: Gamma correction is used to correct for the nonlinear relationship between luminance and brightness. This application note presents an assembly program written for the MAXQ2000 microcontroller (µC) that uses gamma correctio...
2009-04-27 標(biāo)簽：二極管 3657
MAX6956編程指南
摘要：本指南給出了MAX6956 LED顯示驅(qū)動器以及I/O擴展器編程的詳細(xì)信息。同時還討論了類似器件(MAX6957、MAX7300以及MAX7301)的一些編程技巧。 概述MAX6956 LED驅(qū)動器...
2009-04-26 標(biāo)簽：MAX6956 1231
SMBus I/O Expander Controls LC
Abstract: A circuit consisting of an SMBus™ I/O expander, step-up converter, and digital potentiometer enables the SMBus to control the contrast of an LCD. Small, handheld, battery-powered devices often feature an L...
2009-04-26 標(biāo)簽： 1552
DS3984/DS3988多燈共用電流返回端的驅(qū)動方案
摘要：DS3984和DS3988為多通道冷陰極熒光燈(CCFL)控制器。DS3984支持四個通道，DS3988支持八個通道。這些控制器使用推挽式驅(qū)動架構(gòu)，可將直流電源電壓轉(zhuǎn)換成驅(qū)動CCFL所需的交流高壓波...
如何調(diào)整DS3994的軟啟動方式
摘要：本應(yīng)用筆記介紹4通道的冷陰極熒光燈(CCFL)控制器DS3994采用的軟啟動方式(SSP)，它可以在每個燈點亮的開始逐漸增加MOSFET的占空比。本文解釋了如何修改器件的SSP默認(rèn)值，從而...
2009-04-26 標(biāo)簽：DS3994 959
過濾網(wǎng)絡(luò)結(jié)合反鋸齒和Sinc補償-Filter Networ
過濾網(wǎng)絡(luò)結(jié)合反鋸齒和...
2009-04-25 標(biāo)簽：網(wǎng)絡(luò) 1099
開關(guān)電容集成電路形式陷波器-Switched-Capacit
Switched-capacitor filters (SCFs) are renowned for ease of use. They are accurate, require no external components, and maintain a predictable response over all specified operating conditions. For integrated-circuit SCFs, their tightly matc...
2009-04-25 標(biāo)簽：集成電路 1672
發(fā)電機開關(guān)電容濾波器時鐘-Generating Switch
Recent advances in semiconductor-process technology and circuit-design techniques have brought down the prices of switched-capacitor filters (SCFs) by a factor of three. As an example, five-pole Butterworth low-pass filters sell for less t...
2009-04-25 標(biāo)簽：濾波器 2114
連續(xù)時間和開關(guān)濾器器設(shè)計
Much literature and software has been published on the design and the implementation of standard filter responses. When a nonstandard filter response is required, it is often left to the circuit designer to produce a solution using his or ...
2009-04-25 標(biāo)簽：濾波器 578
低通濾波器改善了階躍響應(yīng)-Lowpass Filter Ha
Abstract: Adding optimization circuitry to a lowpass filter allows the filter to adjust its cutoff frequency dynamically, preserving the step-response time for relatively low cutoff frequencies. A common problem when desi...
2009-04-25 標(biāo)簽：濾波器 1499
新增數(shù)字調(diào)整，連續(xù)時間濾波器-Add Digital Adj
Tuned-bandpass applications often incorporate switched-capacitor filters—these filters enable a sweep of the bandpass center frequency by simply sweeping the applied clock rate. Such an arrangement allows a processor-controlled system to...
2009-04-25 標(biāo)簽：濾波器 691
芯片控制可編程濾波器-µP-Supervisor
Abstract: An application showing how the use of a microprocessor supervisor can be used to program a dual section filter. Using the time delay from the reset circuit and strapping it to the power-fail comparator with a delay circuit, the f...
2009-04-25 標(biāo)簽：芯片 1074
濾波器的設(shè)計使用集成模塊-Filter Design Usi
Much literature and software has been published on the design and the implementation of standard filter responses. When a nonstandard filter response is required, it is often left to the circuit designer to produce a solution using his or ...
2009-04-25 標(biāo)簽：濾波器 953
過濾器基本知識：抗鋸齒-Filter Basics: Ant
Abstract: In a sampled data system, frequency components greater than half the sampling rate "alias" (shift) into the frequency band of interest. Most of the time, aliasing in an undesirable side effect, so the "undersampled" higher freque...
2009-04-25 標(biāo)簽：抗鋸齒 2759
標(biāo)準(zhǔn)清晰度數(shù)字電視重構(gòu)濾波器可調(diào)群時延-SDTV Recon
Abstract: The MAX4450 operational amplifier configured in a 3-pole, low-pass Sallen-Key filter provides a Butterworth response with a bandwidth of -3dB at 5.25MHz. This circuit can be used for video anti-aliasing and reconstruction filteri...
2009-04-25 標(biāo)簽：濾波器 830
5MHz, 3-Pole, Low-Pass Filter
Abstract: The MAX4390 operational amplifier configured in a 3-pole, low-pass Sallen-Key filter that provides a Butterworth response with a bandwidth of -3dB at 5.25MHz. This circuit can be used for video anti-aliasing and reconstruction fi...
2009-04-25 標(biāo)簽：driver 1243
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