所需E币: 4
时间: 2019-12-24 18:15
大小: 22.38KB
摘要:本应用笔记讨论了如何使用MAX532建立一个可编程增益放大器(PGA),这是适合AC增益控制。无需外部元件是必要的。方程很容易地计算出输出值。Maxim>AppNotes>A/DandD/ACONVERSION/SAMPLINGCIRCUITSDIGITALPOTENTIOMETERSKeywords:programmablegainamplifier,PGA,MAX532,programmablegain,programmableresistor,acgainNov01,2000controlAPPLICATIONNOTE429Programmable-GainAmplifier,UsingtheMAX532DACAbstract:ThisapplicationnotediscusseshowtousetheMAX532tobuildaprogrammablegainamplifier(PGA)that'ssuitableforACgaincontrol.Noexternalcomponentsarenecessary.Equationsareprovidedtoeasilycalculatetheoutputvalues.TheMAX532isadual,12-bit,voltage-outputDAC.Accesstotheoutputamplifier'sinputterminalsallowsittobeeasilyconfiguredasaprogrammable-gainamplifier(PGA)suitableforACgaincontrol.Thecircuitconfigurationisthatofaninvertingamplifier……