电源设计应用
Buffered Linear-Ramp Generator
Abstract: A precision ramp generator produces a 0 to 5V ramp while operating from a single 5V supply. Using standard circuits and no auxiliary voltage generators, such as charge pumps or inductive DC-DC converters, it is ...
2009-04-20 2188
DS1090频率计算器
摘要：本应用笔记提供一个简单易用的频率计算器，用于确定适当的型号、偏置电阻以及DS1090低频、电阻可编程、扩频EconOscillator™的输入设置。DS1090可提供125kHz至8MHz的扩频、方...
2009-04-20 554
Analog Switches Operate With 3
Abstract: By adding a voltage doubler and voltage inverter, a single 3V or 5V power supply can produce the voltages necessary to improve the performance on a dual voltage analog switch. With the higher power supplies and wider range, the o...
2009-04-20 1034
Minimizing Total Harmonic Dist
Abstract: Analog switches are commonly used in audio systems to switch low-level inputs or adjust audio filter characteristics. Selecting the proper analog switch can help optimize the total harmonic distortion (THD) of a system within the...
2009-04-20 1337
Analog Switch Lowers Relay Pow
Abstract: Design idea outlining a method to use an analog switch and discrete components to reduce the power dissipated in relay actuation. Relays are often used as electrically controlled switches. Unlike transistors, th...
2009-04-20 1771
Selectable-Range Current Loop
Abstract: This article shows an example of implementing a 4-20mA or 0-20mA current-loop output using a voltage output digital-to-analog converter (DAC) and a V to I converter. Current-loop signals, as opposed to voltage s...
2009-04-20 1263
Fault Protection Saves Multipl
Abstract: Discrete components are available to protect against faults caused when a voltage applied to the input of a switch, mux, or signal-line circuit protector exceeds the voltage at the power supply pins. A more practical approach to ...
2009-04-20 2442
Selecting the Right CMOS Analo
Abstract: This tutorial outlines the basic construction, operation, and applications of analog switches. On-resistance, flatness, and charge-injection, each a performance-related specification, are defined. Application-specific features in...
2009-04-20 1337
Multiplexer Enables Pseudomult
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...
2009-04-20 1324
High-Speed Pulse Generator Has
Abstract: As integrated circuits (ICs) speed up, the rise/fall times of most pulse and function generators (5ns typical) become inadequate for measuring time intervals below 20ns. You can overcome this limitation with analog switches or ad...
2009-04-20 1714
低电压故障保护
摘要：本应用笔记讨论过压保护在连接系统电路的开关和复用器中的必要性。MAX4711/MAX4712/MAX4713模拟开关工作在2.7V至11V，集成了故障保护功能。本文还介绍了其它几种故障保护方案...
2009-04-20 1175
Protecting Against Momentary P
Abstract: Impact or vibration can cause momentary interruptions when batteries lose contact. To ensure continuity of power in battery-powered systems, add this three-IC circuit. When you drop a battery-powered device, the...
2009-04-20 571
电池与PWM充电电源短路保护
摘要：本应用笔记提供了一个简单的蜂窝电话电池充电系统的保护方案，避免在基带处理器闭锁时损坏电池。该电路通过监视处理器和插接操作，避免电池与PWM充电电源短路。 ...
2009-04-20 2069
Using DS4510/DS4520/DS4550 to
Abstract: Many high-reliability systems maintain a backup copy of their flash memory should a new software download become unusable for any reason. This application note describes how the DS4510, DS4520, and DS4550 non-volatile I/O expande...
2009-04-20 1226
Driving White LEDs in Clamshel
Abstract: A switching-converter IC—designed as a white-LED driver—and an analog switch control three forms of LED illumination in a mobile (clamshell) phone. This circuit multiplexes the drive to three sets of LEDs fo...
2009-04-20 713
DS33X162产品线的FAQ
摘要：本应用笔记是DS33X162 EoPDH以太网映射器产品线的常见问题解答(FAQ)。DS33X162产品线可以应用于运营级以太网、以太分界设备、以太网接入、MSPP、DSLAM、ROADM、微波通信、WAN路由器...
2009-04-20 1634
改善USB 2.0开关系统的响应特性
摘要：本应用笔记介绍如何利用MAX4906EF实现一个超低功耗、低成本的双USB 2.0端口切换开关。这个电路在几乎没有增加电流消耗的情况下为USB设计增加了一个2:1开关，从而使几个插座...
2009-04-20 1281
使用MAX4951 SATA双向转接器驱动eSATA电缆
摘要：采用增强串行ATA (eSATA)，带有外部驱动的计算机系统在性能上实际与内部驱动计算机系统相当，要比USB 2.0快得多。eSATA提供单独的接收/发送通道，速率高达3.0Gbps，而USB 2.0只是...
2009-04-20 752
Robust Contact Monitor Simplif
Abstract: This application note demonstrates how the MAX13362 automotive switch monitor performs during ECU-level testing. The article describes the tests performed and the results obtained. IntroductionThe MAX...
2009-04-20 781
Reference Design for Switching
Abstract: This application shows how the MAX4885E low-capacitance VGA switch can be used to perform the switching function in a laptop computer. The MAX4885E draws nearly zero current, fits into a 4mm x 4mm package, and incorporates most o...
2009-04-20 900
Switching VGA Signals in a Not
Abstract: This application shows how the MAX4885E low-capacitance VGA switch can be used to perform the switching function between a notebook computer and a docking station. The MAX4885E draws nearly zero current, fits into a 4mm x 4mm pac...
2009-04-20 871
8比特 800Msps高速采样保持电路的设计
随着数字技术的突飞猛进，越来越多的电路系统将A／D转换器作为一个子模块集成到系统内部。例如在便携式数据传输、数字视频和图像处理等应用系统中，8~12 bit分辨率的嵌入式A...
2009-04-20 2110
基于PWM AC—AC变换的电压补偿器设计
基于PWM AC—AC变换的电压补偿器设计 研究表明配电系统中90％以上的扰动都是由电压降低引起的，常用的低压补偿技术无论是变电站的集中补偿、用户的分散补偿，还是杆上...
2009-04-20 1778
单片机芯片的三相半控整流电路设计
单片机芯片的三相半控整流电路设计 整流电路广泛应用在直流电机调速，直流稳压电压等场合。而三相半控整流桥电路结构是一种常见的整流电路，其容易控制，成本较低...
2009-04-20 2060
DC/DC辐照损伤与VDMOS器件1/f噪声相关性研究
DC/DC辐照损伤与VDMOS器件1/f噪声相关性研究 大量的研究表明，低频噪声除了与产品性能有关之外，还与产品质量和可靠性密切相关。国内外出现了一系列使用低频噪声特别是1...
2009-04-20 1141
利用DirectDrive技术从3.3V单电源产生2VRMS
利用DirectDrive 技术从3.3V 单电源产生2VRMS 的线驱动 本应用笔记将Maxim 的DirectDrive™技术与传统的单电源供电音频线驱动器相比较，给出...
2009-04-19 963
DS318x中CLAD的配置
摘要：本应用笔记介绍了如何配置DS3184中的时钟速率适配器(CLAD)功能单元。同样适用于其他Dallas Semiconductor的器件，例如DS3181, DS3182和DS3183。DS3181, DS3182, DS3183和DS3184 (DS318x)集成了ATM...
2009-04-18 1216
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