Who has never experienced oscillations issues when using an operational amplifier? Opampsare often used in a simple voltage follower configuration. However, this is not the bestconfiguration in terms of capacitive loading and potential risk of oscillations.Capacitive loads have a big impact on the stability of operational amplifier-basedapplications. Several compensation methods exist to stabilize a standard op-amp. Thisapplication note describes the most common ones, which can be used in most cases.The general theory of each compensation method is explained, and based on this, specific
標(biāo)簽： 半導(dǎo)體 運(yùn)放 穩(wěn)定性
上傳時(shí)間： 2013-10-28
上傳用戶：chenbhdt
模擬集成電路的設(shè)計(jì)與其說(shuō)是一門技術(shù)，還不如說(shuō)是一門藝術(shù)。它比數(shù)字集成電路設(shè)計(jì)需要更嚴(yán)格的分析和更豐富的直覺(jué)。嚴(yán)謹(jǐn)堅(jiān)實(shí)的理論無(wú)疑是嚴(yán)格分析能力的基石，而設(shè)計(jì)者的實(shí)踐經(jīng)驗(yàn)無(wú)疑是誕生豐富直覺(jué)的源泉。這也正足初學(xué)者對(duì)學(xué)習(xí)模擬集成電路設(shè)計(jì)感到困惑并難以駕馭的根本原因。.美國(guó)加州大學(xué)洛杉機(jī)分校(UCLA)Razavi教授憑借著他在美國(guó)多所著名大學(xué)執(zhí)教多年的豐富教學(xué)經(jīng)驗(yàn)和在世界知名頂級(jí)公司(AT&T，Bell Lab，HP)卓著的研究經(jīng)歷為我們提供了這本優(yōu)秀的教材。本書(shū)自2000午出版以來(lái)得到了國(guó)內(nèi)外讀者的好評(píng)和青睞，被許多國(guó)際知名大學(xué)選為教科書(shū)。同時(shí)，由于原著者在世界知名頂級(jí)公司的豐富研究經(jīng)歷，使本書(shū)也非常適合作為CMOS模擬集成電路設(shè)計(jì)或相關(guān)領(lǐng)域的研究人員和工程技術(shù)人員的參考書(shū)。... 本書(shū)介紹模擬CMOS集成電路的分析與設(shè)計(jì)。從直觀和嚴(yán)密的角度闡述了各種模擬電路的基本原理和概念，同時(shí)還闡述了在SOC中模擬電路設(shè)計(jì)遇到的新問(wèn)題及電路技術(shù)的新發(fā)展。本書(shū)由淺入深，理論與實(shí)際結(jié)合，提供了大量現(xiàn)代工業(yè)中的設(shè)計(jì)實(shí)例。全書(shū)共18章。前10章介紹各種基本模塊和運(yùn)放及其頻率響應(yīng)和噪聲。第11章至第13章介紹帶隙基準(zhǔn)、開(kāi)關(guān)電容電路以及電路的非線性和失配的影響，第14、15章介紹振蕩器和鎖相環(huán)。第16章至18章介紹MOS器件的高階效應(yīng)及其模型、CMOS制造工藝和混合信號(hào)電路的版圖與封裝。 1 Introduction to Analog Design 2 Basic MOS Device Physics 3 Single-Stage Amplifiers 4 Differential Amplifiers 5 Passive and Active Current Mirrors 6 Frequency Response of Amplifiers 7 Noise 8 Feedback 9 Operational Amplifiers 10 Stability and Frequency compensation 11 Bandgap References 12 Introduction to Switched-Capacitor Circuits 13 Nonlinearity and Mismatch 14 Oscillators 15 Phase-Locked Loops 16 Short-Channel Effects and Device Models 17 CMOS Processing Technology 18 Layout and Packaging
標(biāo)簽： analog design cmos of
上傳時(shí)間： 2014-12-23
上傳用戶：杜瑩12345
特點(diǎn)（FEATURES） 精確度0.2%滿刻度±0.5℃（冷接點(diǎn)補(bǔ)償）（Accuracy 0.2%F.S.±0.5℃（CJC）） 高精確度冷接點(diǎn)溫度補(bǔ)償（CJC traceability＜±0.5℃（0-70℃）) 熱電偶誤差補(bǔ)償，與斷線保護(hù)功能（Sensor error compensation(offset) and burnout protection function）) 16 BIT 隔離類
上傳時(shí)間： 2014-12-24
上傳用戶：wojiaohs
DC/DC 升壓IC：The FP6291 is a current mode boost DC-DC converter. Its PWM circuitry with built-in 0.25 Ω power MOSFET make this regulator highly power efficient. The internal compensation network also minimizes as much as 6 external component counts. The non-inverting input of error amplifier connects to a 0.6V precision reference voltage and internal soft-start function can reduce the inrush current. The FP6291 is available in the SOT23-6L package and provides space-saving PCB for the application fields.
上傳時(shí)間： 2013-11-07
上傳用戶：3294322651
設(shè)計(jì)一種基于P89V51RD2的功率因數(shù)測(cè)量?jī)x，采用光電隔離器和專用數(shù)碼管驅(qū)動(dòng)器。該測(cè)量?jī)x是以增強(qiáng)型單片機(jī)P89V51RD2為核心，大大簡(jiǎn)化系統(tǒng)硬件設(shè)計(jì)。而軟件部分采用模塊化設(shè)計(jì)思想，采用中值濾波和小數(shù)補(bǔ)償算法，實(shí)現(xiàn)功率因數(shù)的高精度測(cè)量。實(shí)驗(yàn)測(cè)試表明，該功率因數(shù)測(cè)量?jī)x測(cè)量精度高，運(yùn)行穩(wěn)定可靠。 Abstract: A power－factor measurement instrument based on P89V51RD2is designed，which uses optical coupler and specific LED drive chip.The power factor measurement instrument uses P89V51RD2as a core of which greatly simplifies the system design.Furthermore，modularization software is developed in detail.The high precision power－factor measuring system is realized by the center value filter and fractional compensation algorithm.Experiments manifests that the power－ factor measurement instrument is high precision，steady and reliable.
上傳時(shí)間： 2014-12-27
上傳用戶：CHINA526
為降低成本和解決現(xiàn)有膜片鉗放大器系統(tǒng)中PC機(jī)的干擾問(wèn)題，研究了一種基于單片機(jī)的膜片鉗放大器小系統(tǒng)。該系統(tǒng)采用ADI公司生產(chǎn)的ADuC841作為控制核心，并且配置相應(yīng)的液晶顯示模塊LCM3202401。模擬電路部分采用高輸入阻抗的AD8627實(shí)現(xiàn)微電流信號(hào)的采集，并由后級(jí)電路進(jìn)行信號(hào)的放大和電阻電容的補(bǔ)償。它具有硬件電路簡(jiǎn)單、體積小、使用方便的特點(diǎn)。既可以單獨(dú)作為小系統(tǒng)實(shí)現(xiàn)采集和顯示，也可以通過(guò)紅外方式和PC機(jī)進(jìn)行通訊，在PC機(jī)上進(jìn)行信號(hào)的處理。 Abstract: In order to reduce cost and resolve the interferential problem with PC in existing patch clamp amplifiers, a small patch clamp amplifier system design based on microcontroller is studied. It adopts a new high performance microconverter ADuC841 by the ADI as the control core in the system, configuring a liquid crystal module LCM3202401. In the analog circuit, AD8627 with high input impedance is used to detect the low current，signal magnification, as well as resistance and capacitance compensation are accomplished by subsequent circuits. It has the advantage of simple hardware circuit design, small volume and convenient operation. It can either be used as an independent system to measure and show signal detected or transmit to PC by infrared ray.
上傳時(shí)間： 2013-11-06
上傳用戶：yy_cn
介紹了用單片機(jī)C 語(yǔ)言實(shí)現(xiàn)無(wú)功補(bǔ)償中電容組循環(huán)投切的基本原理和算法，并舉例說(shuō)明。關(guān)鍵詞：循環(huán)投切;C51;無(wú)功補(bǔ)償中圖分類號(hào)： TM76 文獻(xiàn)標(biāo)識(shí)碼： BAbstract: This paper introduces the aplication of C51 in the controlling of capacitorsuits cycle powered to be on and off in reactive compensation.it illustrate thefondamental principle and algorithm with example.Key words: cycle powered to be on and off; C51; reactive compensation 為提高功率因數(shù)，往往采用補(bǔ)償電容的方法來(lái)實(shí)現(xiàn)。而電容器的容量是由實(shí)時(shí)功率因數(shù)與標(biāo)準(zhǔn)值進(jìn)行比較來(lái)決定的，實(shí)時(shí)功率因數(shù)小于標(biāo)準(zhǔn)值時(shí)，需投入電容組，實(shí)時(shí)功率因數(shù)大于標(biāo)準(zhǔn)值時(shí)，則需切除電容組。投切方式的不合理，會(huì)對(duì)電容器造成損壞，現(xiàn)有的控制器多采用“順序投切”方式，在這種投切方式下排序在前的電容器組，先投后切；而后面的卻后投先切。這不僅使處于前面的電容組經(jīng)常處于運(yùn)行狀態(tài)，積累熱量不易散失，影響其使用壽命，而且使后面的投切開(kāi)關(guān)經(jīng)常動(dòng)作，同樣減少壽命。合理的投切方式應(yīng)為“循環(huán)投切”。這種投切方式使先投入的運(yùn)行的電容組先退出，后投的后切除，從而使各組電容及投切開(kāi)關(guān)使用機(jī)率均等，降低了電容組的平均運(yùn)行溫度，減少了投切開(kāi)關(guān)的動(dòng)作次數(shù)，延長(zhǎng)了其使用壽命。
標(biāo)簽： C51 無(wú)功補(bǔ)償 循環(huán) 電容
上傳時(shí)間： 2014-12-27
上傳用戶：hopy
The XL6003 regulator is fixed frequency PWM Boost (step-up) DC/DC converter, capable ofdriving 1050mA load current with excellent line and load regulation. The regulator is simple to use because it includes internal frequency compensation and a fixed-frequency oscillator so that it requires a minimum number of external components to work. The XL6003 could directly drive 5~10 3W LED units at VIN=12V.
上傳時(shí)間： 2013-11-07
上傳用戶：xy@1314
在研究傳統(tǒng)家用燃?xì)鈭?bào)警器的基礎(chǔ)上，以ZigBee協(xié)議為平臺(tái)，構(gòu)建mesh網(wǎng)狀網(wǎng)絡(luò)實(shí)現(xiàn)網(wǎng)絡(luò)化的智能語(yǔ)音報(bào)警系統(tǒng)。由于傳感器本身的溫度和實(shí)際環(huán)境溫度的影響，傳感器標(biāo)定后采用軟件補(bǔ)償方法。為了減少系統(tǒng)費(fèi)用，前端節(jié)點(diǎn)采用半功能節(jié)點(diǎn)設(shè)備，路由器和協(xié)調(diào)器采用全功能節(jié)點(diǎn)設(shè)備，構(gòu)建mesh網(wǎng)絡(luò)所形成的家庭內(nèi)部報(bào)警系統(tǒng)，通過(guò)通用的電話接口連接到外部的公用電話網(wǎng)絡(luò)，啟動(dòng)語(yǔ)音模塊進(jìn)行報(bào)警。實(shí)驗(yàn)結(jié)果表明，在2.4 GHz頻率下傳輸，有墻等障礙物的情況下，節(jié)點(diǎn)的傳輸距離大約為35 m，能夠滿足家庭需要，且系統(tǒng)工作穩(wěn)定，但在功耗方面仍需進(jìn)一步改善。 Abstract: On the basis of studying traditional household gas alarm system, this paper proposed the platform for the ZigBee protocol，and constructed mesh network to achieve network-based intelligent voice alarm system. Because of the sensor temperature and the actual environment temperature, this system design used software compensation after calibrating sensor. In order to reduce system cost, semi-functional node devices were used as front-end node, however, full-function devices were used as routers and coordinator，constructed alarm system within the family by building mesh network，connected to the external public telephone network through the common telephone interface, started the voice alarm module. The results indicate that nodes transmit about 35m in the distance in case of walls and other obstacles by 2.4GHz frequency transmission, this is able to meet family needs and work steadily, but still needs further improvement in power consumption.
標(biāo)簽： ZigBee 無(wú)線智能 家 報(bào)警系統(tǒng)
上傳時(shí)間： 2013-10-30
上傳用戶：swaylong
The AN10 begins with a survey of methods for measuring op amp settling time. This commentary develops into circuits for measuring settling time to 0.0005%. Construction details and results are presented. Appended sections cover oscilloscope overload limitations and amplifier frequency compensation.
標(biāo)簽： 運(yùn)算放大器 穩(wěn)定時(shí)間 測(cè)量
上傳時(shí)間： 2013-11-14
上傳用戶：JIMMYCB001
蟲(chóng)蟲(chóng)下載站版權(quán)所有 京ICP備2021023401號(hào)-1
