放大器噪声系数计算.pdf

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1、ApplicationReportZHCA525–April2013放大器噪声系数计算毛华平德州仪器公司(TI)高速应用工程师摘要本文简要介绍了两种放大器架构的噪声系数计算,包括inverting,non-inverting架构的噪声系数计算,并提供计算小工具.Abstract:thisarticleintroducethenoisefigurecalculationofseveralarchitecture,suchasinverting,non-inverting,Andalsoprovidethecalculationtool.Keywords:Noisefigure,Invertin

2、g,non-inverting.Contents1引言.................................................................................................................................22.放大器噪声指标..............................................................................................................23信噪比计算................

3、...................................................................................................64放大器噪声系数计算...................................................................................................104.1Inverting输入运放噪声系数计算..................................................................

4、..............104.2Non-Inverting输入运放噪声系数计算........................................................................135案例分析.....................................................................................................................146总结........................................................

5、....................................................................157附件............................................................................................................................158参考资料...............................................................................................

6、......................15FiguresFigure1输入电压噪声和电流噪声曲线图例..............................................................................2Figure2噪声种类分布图..........................................................................................................3Figure3放大器噪声分量分解..............................

7、.....................................................................3Figure4放大器电压噪声等效输出模型...................................................................................5Figure5放大器电流噪声等效输出模型............