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建立比較器的外部滯回電壓
摘要：長(zhǎng)期以來(lái), 模擬比較器的使用一直處在它的“同伴”――運(yùn)算放大器的陰影之中。設(shè)計(jì)人員發(fā)表了大量針對(duì)運(yùn)算放大器的應(yīng)用筆記, 而關(guān)于比較器的應(yīng)用筆記較少。正是由于缺...
2009-05-06 標(biāo)簽：電壓 1229
微電路的正電源電流監(jiān)視器-Micropower Circui
Abstract: The following application note shows a circuit that converts the load current of a positive power supply into a ground referenced signal voltage using the ICL7612 operational amplifier. The inexpensive circuit o...
2009-05-06 標(biāo)簽：監(jiān)視器 1014
手持給出系統(tǒng)柔性電路故障保護(hù)-Handy Circuit G
Abstract: When it is necessary to plug in a board into a system that is currently powered, it is critical to control the inrush current to prevent damage/system fault conditions. This application provides a simple circuit to achieve this f...
2009-05-06 標(biāo)簽：電路 1123
硅雙極寬帶鎖相環(huán)積木塊集成電路-A Silicon Bipo
Abstract: A broadband phase-lock loop (PLL) building block integrated circuit (IC) that can accommodate signal frequencies from 0.5GHz to 9GHz is presented. The design integrates a prescaler with selectable divide ratio, a phase detector, ...
2009-05-06 標(biāo)簽：集成電路 975
創(chuàng)建非線(xiàn)性傳遞函數(shù)與線(xiàn)性電位器電路-Creating Non
Abstract: Linear digital potentiometers (pots) can be used in non-linear applications such as adjusting volume control in audio applications. This article discusses how to create a "pseudo-logarithmic" taper digital pot by simply adding a ...
2009-05-05 標(biāo)簽：電位器 938
低噪聲音頻電源電路-Low Noise Audio Powe
Abstract: Audio application note describes a simple, compact scheme that provides a low noise, low ripple power source for use in audio amplifiers, microphones, headphone amplifiers, CODECs and other audio circuits. ...
利用Direc tDrive技術(shù)從3.3V單電源產(chǎn)生2VRM
摘要：本應(yīng)用筆記將Maxim的DirectDrive技術(shù)與傳統(tǒng)的單電源供電音頻線(xiàn)驅(qū)動(dòng)器相比較，給出了DirectDrive結(jié)構(gòu)的優(yōu)點(diǎn)，特別是在機(jī)頂盒和電纜調(diào)制解調(diào)器應(yīng)用中的優(yōu)勢(shì)。 ...
2009-05-05 標(biāo)簽：驅(qū)動(dòng) 859
自動(dòng)電平控制簡(jiǎn)介
摘要：自動(dòng)電平控制(ALC)是一種自動(dòng)控制輸出給揚(yáng)聲器的功率的技術(shù)。ALC可防止揚(yáng)聲器過(guò)載并優(yōu)化動(dòng)態(tài)范圍。本應(yīng)用筆記簡(jiǎn)單介紹ALC技術(shù)，并展示了其在MAX9756/MAX9757/MAX9758立體聲揚(yáng)聲...
2009-05-05 標(biāo)簽：電平 2028
Keep Power Consumption in Chec
Abstract: Portable electronic devices usually include a single 3- or 4-connector jack which can be a stereo headphone jack, a mono headphone jack with microphone input and hook switch, or a stereo headphone jack with microphone/hook-switch...
2009-05-05 標(biāo)簽：Low-Power 1305
參數(shù)測(cè)量單元(PMU)的布線(xiàn)指南
摘要：本應(yīng)用筆記討論了多種措施來(lái)指導(dǎo)系統(tǒng)設(shè)計(jì)人員采用正確的布局和信號(hào)走線(xiàn)技術(shù)。對(duì)布線(xiàn)設(shè)計(jì)和元件的相關(guān)介紹將減少用戶(hù)在使用PMU時(shí)的噪聲，并有助于處理散熱問(wèn)題。 ...
2009-05-05 標(biāo)簽：PMU 1363
節(jié)電模式降低繼電器驅(qū)動(dòng)功耗
摘要：本應(yīng)用筆記討論具有內(nèi)置節(jié)電電路、能降低總功耗的繼電器驅(qū)動(dòng)器MAX4822/MAX4824。在典型應(yīng)用中，總節(jié)電范圍能達(dá)5.5%至68.5%，具體數(shù)值取決于所使用的繼電器類(lèi)型。節(jié)電模式還...
2009-05-05 標(biāo)簽：繼電器 1338
MAX9979管腳電子IC中PMU模式操作
摘要：該應(yīng)用筆記結(jié)合各種模式的等效電路圖介紹了MAX9979參數(shù)測(cè)量單元(PMU)最常用的四種工作模式(FVMI、FVMV、FIMI和FIMV)。關(guān)于各種功能的詳細(xì)介紹和模式操作請(qǐng)參考MAX9979數(shù)據(jù)資料。 ...
2009-05-05 標(biāo)簽：MAX9979 2399
簡(jiǎn)單的電路保護(hù)系統(tǒng)過(guò)熱-Simple Circuit Pro
Abstract: Using a temperature switch and fan driver IC along with a remote diode temperature switch provides thermal protection and simple fan drive functions for a system. This 2-chip circuit provides fan control, over-t...
2009-05-04 標(biāo)簽：電路 706
多電壓系統(tǒng)需要電源電壓測(cè)序-Multiple Voltage
Abstract: The following application note discusses multiple solutions for sequencing power supplies and sequencing reset outputs. It discusses the advantage and disadvantages of using a discrete solution versus a more integrated solution. ...
選擇合適的系列電壓基準(zhǔn)源的絕對(duì)精度電壓輸出數(shù)模轉(zhuǎn)換器設(shè)計(jì)-S
Abstract: This article provides an in depth analysis, procedure, and selection tables for selecting the optimum series voltage reference for voltage output DACs. It covers all of the important parameters such as: input supply voltage, refe...
2009-05-04 標(biāo)簽：轉(zhuǎn)換器基準(zhǔn)源 2000
Current Limited DC-DC Controll
Abstract: USB powered devices require a regulated supply. Unfortunately, the USB bus voltage can vary from 4V to 9V. Configuring the MAX668 boost controller into step-up/step-down topology can generate a current-limited regulated supply. ...
2009-05-04 標(biāo)簽：current 1799
Proper Layout and Component Se
正確的布局和元件選擇控制電磁干擾 Abstract: Understanding the physics of voltage regulator topologies is important in designing power systems for EMI and EMC compliance. In particular, the physical principl...
2009-05-04 標(biāo)簽：電磁干擾 1494
選擇合適的CMOS模擬開(kāi)關(guān)-Selecting the Ri
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...
2009-05-04 標(biāo)簽：CMOS 2281
驅(qū)動(dòng)LED的電池供電的應(yīng)用：控制亮度功率高效-Driving
Abstract: White light-emitting diode (WLED) drivers provide high efficiency and brightness matching for LCD backlighting in displays. To control brightness, these drivers regulate current going into LEDs that are arranged in either serial ...
2009-05-04 標(biāo)簽：led 1212
雙向電流檢測(cè)與單輸出-Bi-directional Curr
Abstract: Battery operated devices often need to monitor both charge and discharge currents. A dual current-sense amplifier and differential amplifier are combined to produce a single output voltage that indicates magnitude and direction o...
2009-05-04 標(biāo)簽：電流 1374
通道晶體管增強(qiáng)調(diào)節(jié)的輸出電流-Pass Transistor
Abstract: A 5V linear regulator with external pass transistor (which provides an additional, parallel path for load current) delivers twice as much output current (150mA to 300mA) while maintaining 5V regulation. In Figur...
2009-05-03 標(biāo)簽：晶體管 1433
LVDS多媒體接口在汽車(chē)電子領(lǐng)域的應(yīng)用前景
摘要：數(shù)據(jù)通信需求的增長(zhǎng)造就了多種新型數(shù)據(jù)接口，這些數(shù)據(jù)接口針對(duì)不同的應(yīng)用領(lǐng)域提供相應(yīng)的電平指標(biāo)。高數(shù)據(jù)率、高抗干擾性和構(gòu)造簡(jiǎn)單成為開(kāi)發(fā)這些接口的關(guān)鍵要求。...
2009-05-03 標(biāo)簽：lvds 949
MAX16800測(cè)試板
摘要：MAX16800測(cè)試板是一個(gè)簡(jiǎn)單的高亮度LED驅(qū)動(dòng)電路板，專(zhuān)為驅(qū)動(dòng)Osram、Lumileds、Nichia、Cree或其它LED驅(qū)動(dòng)設(shè)計(jì)。測(cè)試表明，MAX16800適合用于汽車(chē)的內(nèi)部和外部LED照明，以及商業(yè)和工業(yè)LE...
2009-05-03 標(biāo)簽：MAX16800 982
使用數(shù)字分壓器實(shí)現(xiàn)車(chē)燈調(diào)光，以節(jié)省功耗、提高效率
摘要：本應(yīng)用筆記介紹怎樣使用低成本數(shù)字分壓器來(lái)實(shí)現(xiàn)燈光強(qiáng)弱控制，既節(jié)省了功耗又提高了效率。 引言在汽車(chē)以及其他照明應(yīng)用中，通常需要調(diào)節(jié)內(nèi)部燈...
2009-05-02 標(biāo)簽：分壓器 1074
下一代汽車(chē)照明電源
摘要：目前，汽車(chē)中大多采用LED和CCFL作為背光源，兩種方案均需要特殊的供電電源。本應(yīng)用筆記討論了LED、CCFL燈源的供電方案，可理想用于汽車(chē)的內(nèi)部和外部照明。 ...
2009-05-02 標(biāo)簽：照明電源 941
1 Dimming Ratio with the DS388
Abstract: This application note describes how CCFL lamps can be dimmed and how a user can maximize the dimming ratio of a CCFL inverter by using the DS3881 and DS3882 CCFL controllers. The note offers guidelines for practical implementatio...
使用MAX15005用于LED應(yīng)用系統(tǒng)的供電和驅(qū)動(dòng)
摘要：本參考設(shè)計(jì)是汽車(chē)LED應(yīng)用的完整系統(tǒng)設(shè)計(jì)。采用MAX15005電流模式控制器，將標(biāo)準(zhǔn)鉛酸汽車(chē)電池的電壓升至21V，用于驅(qū)動(dòng)一串汽車(chē)LED。 下列提供了汽車(chē)LED系統(tǒng)的參...
交流耦合的優(yōu)點(diǎn)
摘要：本應(yīng)用筆記介紹了交流耦合LVDS鏈路的優(yōu)勢(shì)，文章提供了電容選擇的注意事項(xiàng)，并討論了端接拓?fù)洹? 概述使用電容實(shí)現(xiàn)LVDS數(shù)據(jù)連接的交流耦合有很多益處...
2009-05-02 標(biāo)簽：lvds 6157
How to Prevent Flicker Caused
Abstract: The DS3881 and DS3882 CCFL controllers are used in automotive, industrial, and avionic applications to backlight LCD panels that require a high dimming ratio. These CCFL controllers use both analog lamp-current amplitude modulati...
2009-05-02 標(biāo)簽：Flicker 874
選擇高亮度LED驅(qū)動(dòng)器用于汽車(chē)照明應(yīng)用-Selecting
Abstract: This application note provides an overview of HB LED driver selection criteria for automotive lighting applications. It reviews HB LED driver topologies and recommends configurations for various automotive lighting applications, ...
2009-05-02 標(biāo)簽：led驅(qū)動(dòng)器 749
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