运算放大器电路的噪声分析

27th International Spring Seminar on Electronics Technology: Meeting the Challenges of Electronics Technology Progress, 2004. Pub Date : 2004-05-13 DOI:10.1109/ISSE.2004.1490859

K. Asparuhova, E. Gadjeva

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引用次数: 3

摘要

提出了用MATLAB对运放电路进行精确、详细的噪声计算的方法。考虑到电流和电压放大器的特性，对基本运算放大器电路(逆变、非逆变和差分电路)进行了分析。开发了MATLAB函数m-files来预测噪声。计算以下特性:总输出点噪声电压;总等效输入点噪声电压;噪声功率;1/f噪声电压和等效白噪声电压两分量的集成噪声;噪声图。数据表只需要使用特定电路配置的程序。在PSpice模拟器上对结果进行了验证。所提出的MATLAB噪声函数为研究基本模拟块的噪声行为提供了可能，其特点是精确和简单。

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Noise analysis of operational amplifier circuits using MATLAB

Accurate and detailed noise calculations for operational amplifier circuits using MATLAB are proposed. The analysis of the basic op amp circuits (inverting, non-inverting and differential circuits) is performed taking into account the specifics of current and voltage amplifiers. The MATLAB function m-files are developed to predict the noise. The following characteristics are calculated: total output spot noise voltage; total equivalent input spot noise voltage; noise power; integrated noise with its two components, 1/f noise voltage and equivalent white noise voltage; noise figure. Data sheets are only needed to use programs for the particular circuit configuration. The results are verified with the PSpice simulator. The proposed MATLAB noise functions give the possibility of investigating the noise behavior of the basic analog blocks, which are characterized by accuracy and simplicity.

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来源期刊

27th International Spring Seminar on Electronics Technology: Meeting the Challenges of Electronics Technology Progress, 2004.

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