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通信設(shè)計應(yīng)用
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Design Considerations for Data
Abstract: The requirements for interconnect between computers, cell phones or PDA devices are examined as related to the use of data-lump cables. Consideration is given to channel count, supply limitations, RS-232 compatibility or complian...
2009-04-24 標(biāo)簽：design 941
時鐘精度要求確定的異步通信-Determining Cloc
Abstract: This application note discusses the timing requirements for the commonly used serial asynchronous communications protocol implemented in UARTs, and shows how to determine the tolerance for the UART clock source at both ends of an...
2009-04-24 標(biāo)簽：異步通信 1648
外圍設(shè)備的SPI接口的MAX7651處理器-Interfac
Abstract: This article explains how to interface a GPIO port to an SPI peripheral. It defines the basics of the SPI protocol, the signals and the four transfer variations for the SCK signal. A software routine is included to implement the ...
2009-04-24 標(biāo)簽：處理器 884
Force/Sense DAC Applications
Abstract: This article discusses application circuits for Maxim force/sense digital-to-analog converters (DACs). Applications include: selectable fixed-gain DAC, programmable gain DAC, photodiode bias control, amperometric sensor control, ...
2009-04-24 標(biāo)簽：dac 631
Two ICs Convert 4-20mA Signal
Abstract: This design idea describes a simple circuit that converts a 4-20mA signal to a 0V to 5V analog voltage ideal for conversion to digital with an analog-to-digital converter (ADC). The 4mA level from the transducer produces a 0V out...
2009-04-24 標(biāo)簽：signal 928
通過低電壓差分信號(LVDS)傳輸高速信號
摘要：ANSI EIA/TIA-644標(biāo)準(zhǔn)定義的低電壓差分信號(LVDS)非常適合包括時鐘分配、點對點以及多點之間的信號傳輸。本文描述了使用LVDS將高速通訊信號分配到多個目的端的方法。 ...
2009-04-24 標(biāo)簽：lvds 1727
LVDS分離器簡化高速信號分配
摘要：與ECL、PECL和CML標(biāo)準(zhǔn)相比，ANSI EIA/TAI-644的低電壓差分信號(LVDS)標(biāo)準(zhǔn)具有低功耗、低噪聲輻射等優(yōu)勢。本文主要討論LVDS的特性及其可能的應(yīng)用。 最近幾年，隨著微...
接口1DS18683線設(shè)備到一個SPI總線-Interfac
Abstract: The DS1868 uses a dual digital potentiometer with a 3-wire (shift register) interface. This application note describes the logic and firmware required to interface the DS1868, as well as any other Dallas Semiconductor 3-wire devi...
2009-04-24 標(biāo)簽：DS18683 689
模擬開關(guān)擴展I2C接口-Analog Switch Expa
Abstract: Design idea outlining how to use an I2C-controlled analog switch to triple the number of devices connected to an I2C bus. Perhaps the most effective way to gain board space and increase component density is to m...
2009-04-24 標(biāo)簽：接口模擬開關(guān) 2119
LVDS促進(jìn)3G基站的高速信號傳送
摘要：本文討論EIA/TIA-644低壓差分信號(LVDS)標(biāo)準(zhǔn)在3G移動通信設(shè)備中的應(yīng)用，LVDS具有低功耗、低輻射等優(yōu)勢，可理想用于W-CDMA、EDGE和CDMA2000中的高速時鐘、數(shù)據(jù)傳輸。 3G...
2009-04-24 標(biāo)簽：信號 571
啟用復(fù)用器Pseudomultidrop RS-232接口傳
Abstract: A circuit is described that allows four remote RS-232 transceivers to share a single UART. A dual four-to-one multiplexer permits transceiver IC1 to form a network with the four remote transceivers. RS-232 commu...
2009-04-24 標(biāo)簽：接口 898
SCSI Bus Configuration For MST
OverviewIn a typical application the SCSI devices are daisy-chained as shown in Figure 1. The DIFFCAP signal monitors the DIFFSENS line to determine the proper operating mode of the device. The DIFFSENSE pin can also drive the SCS...
2009-04-24 標(biāo)簽：bus 1093
傳輸數(shù)字信號和權(quán)力相同電線-Transmit Digital
Abstract: Analog switches can be used to enable the transmission of digital signals and power over the same two wires. The signal waveform is rectified at the remote location to provide a stable supply voltage and modest load current (abou...
2009-04-24 標(biāo)簽： 483
Connecting the DS2119M SCSI Te
Abstract: SCSI terminators are used to match the termination impedance at each end of a SCSI bus. Matching the impedance is important to maximize the data transfer rate by reducing ringing and cross-talk between cable pairs. ...
2009-04-24 標(biāo)簽：DS2119M 906
The Advantages of Using Low-Vo
The choice of SCSI (Small Computer System Interface) transceivers, whether single-ended (SE) or differential (HVD or LVD), determines the speed of data transfers, the length of cable, and the number of devices that can be supported by a ho...
2009-04-24 標(biāo)簽：LVD 1341
用PC機測試MAX7300/MAX7301的端口擴展功能
摘要：該應(yīng)用筆記介紹了一個可以免費下載的PC程序，用于評估MAX7300和MAX7301 GPIO (擴展口)的功能。 MAX7300和MAX7301是通用的28端口、通用輸入/輸出口(GPIO)處理器外設(shè)。通...
2009-04-24 標(biāo)簽：端口 1529
Add Fault Protection to 4-20mA
Abstract: This circuit provides flexible fault protection for a 4-20mA current loop. In addition, it includes circuitry for recovering digital signals (such as the HART protocol) imposed on the loop. 4-20mA current loops ...
2009-04-24 標(biāo)簽：circuit 1379
A Match Made in Silicon
Abstract: IrDA is a standardized, wireless, infrared data communications method. Modern products often support RS-232 alongside IrDA, meeting legacy requirements. This application note describes ways to achieve both interfaces with a singl...
DS2120低壓差分(LVD)器件在SCSI應(yīng)用環(huán)境中的優(yōu)勢
摘要：本文描述了SCSI、FAST SCSI和ULTRA SCSI之間的差別，給出了DS2120 SCSI端接器的連接方式以及所需要的電平。本文還討論了DIFF_CAP、DIFFSENS相關(guān)的MSTR/SLV功能。 另請參考: S...
2009-04-24 標(biāo)簽：DS2120 1270
Level Translators For SPI and
Abstract: A serial interface is often used for board-level communication between different integrated circuits, especially in space-constrained applications at low-to medium data-rates. The most popular serial interfaces are I²C and S...
2009-04-24 標(biāo)簽：bus 1400
LVDS串行-解串器在雙絞線電纜數(shù)據(jù)傳輸中的性能分析
利用串行-解串器能夠大大減少近距離、寬帶數(shù)據(jù)通信中的連線，類似的應(yīng)用有電信和網(wǎng)絡(luò)設(shè)備的背板互連、3G蜂窩電話基站中機架內(nèi)部的互連、數(shù)字視頻接口等。電流模式、低電壓...
了解共模信號-Understanding Common-Mo
Abstract: To understand how common-mode signals are created and then suppressed, you should first understand the interaction of shields and grounds in common cable configurations. The following discussion defines a common-mode signal, revi...
2009-04-24 標(biāo)簽：信號 718
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 ...
2009-04-24 標(biāo)簽：端口 813
可控制多外設(shè)的SPI/I²C總線
摘要：本應(yīng)用筆記對兩種模擬IC中常用的串行、數(shù)字接口(SPI™或3線、I²C或2線)進(jìn)行了比較，每種接口在不同的設(shè)計中都表現(xiàn)出其優(yōu)點和缺點，具體取決于數(shù)據(jù)速率、可提供的...
2009-04-24 標(biāo)簽：總線 754
High-Speed I²C for the MA
Abstract: This application note provides a much-needed working high-speed I2C example. The application note shows an application circuit and provides all the firmware required to interface the MAXQ2000 microcontroller (MAXQ20 core) to the ...
2009-04-24 標(biāo)簽：MAX1239 1058
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