标签: matched

PerfectMatchedLayer(PML)forComputationalElectromagnetics

匹配电阻在差分电路中具有十分重要的作用。本文以LT5400为例，介绍了匹配电阻对电路CMRR的影响，并以实例说明了理想和非理想放大器的CMRR、差分增益计算方法。PrecisionMatchedResistorsAutomaticallyImproveDifferentialAmplierCMRR……

理想放大器的反馈电阻通常假设表现为完美的匹配性能，实际中电阻的非理想性会影响电路多种参数性能，例如共模拟制比（CMRR）、谐波干扰和稳定性。本文探讨了LT5400厚膜电阻在放大器LTC6362中对CMRR、谐波干扰和稳定性等方面的影响，同时与其它类型电阻的影响作了比较。MatchedResistorNetworksforPrecisionAmplierApplicationsDesignNote502TylerHutchisonIntroductionR2Someidealopampcongurationsassumethatthe1kfeedbackresistorsexhibitperfectmatching.Inpractice,R15V3.3nF5k……

摘要：使用一对匹配晶体管的高边电流检测信号转换到地面参考，该电路允许你并行的要求，以实现所需的驱动电流LED驱动电路。Maxim>AppNotes>DisplayDriversLEDLightingKeywords:whiteLEDs,LEDdrivers,matchedtransistorpair,high-sidecurrentsensingDec08,2010APPLICATIONNOTE4537LevelShifterHelpstoParallelLEDCurrentDriversAbstract:Usingapairofmatchedtransistorstotranslateahigh-sidecurrent-sensesignaldowntoagroundreference,thiscircuitletsyouparallelLED-drivercircuitsasrequiredtoachievethedesireddrivecurrent.AsimilarversionofthisarticleappearedintheFebruary19,2008issueofMachineDesignmagazine.AswhiteLEDsbecomemorepervasive,theindustryprovidesmoreoptionsfordrivingthem.Linearconstant-currentdrivers,forinstance,offerlowEMI,lowcost,andrequireonlyafewcompo……