运算放大器的输入

摘要：当输入偏置电流成为一个问题？这架构提供最低的失调电压吗？本应用笔记介绍了常见的运算放大器的输入结构及其相关的设计优势和挑战。Maxim>AppNotes>AMPLIFIERANDCOMPARATORCIRCUITSKeywords:bipolar,CMOS,inputbiascurrent,inputoffsetvoltage,opamps,operationalamplifierNov30,2000APPLICATIONNOTE717OperationalAmplifierInputsAbstract:Whendoesinputbiascurrentbecomeaconcern?Whicharchitectureoffersthelowestoffsetvoltage?Thisapplicationnoteintroducescommonop-ampinputstructureswiththeirassociateddesignadvantagesandchallenges.Operationalamplifier(opamp)inputsvarywidelyinstructureandperformance.Thisdocumentpresentscommonop-ampinputstructures.ByusingtheElectricalCharacteristicstable,theopampsareidentifiedbytypeandpartnumber.Eachopampstructuretypeoffersitsownadvantagesanddisadvantages.Therefore,Maximwillcontinuetointrodu