A nonlinear macromodel of operational amplifiers in the frequency domain
A nonlinear macromodel of operational amplifiers in the frequency domain
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DOI：
10.1109/tcs.1979.1084653
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发表时间：
1979-06
期刊：
影响因子：
--
通讯作者：
E. Sánchez-Sinencio;M. Majewski
中科院分区：
文献类型：
--
作者：
E. Sánchez-Sinencio;M. Majewski
本文提出了一种用于集成电路运算放大器频域分析的非线性宏模型。这个宏模型和以前文献中报道的宏模型的主要区别在于，这个模型考虑了频率和幅度对运算放大器传递函数的影响。宏模型还包括转换速率对开环频率响应的影响和从傅立叶系数计算的输出电压失真。所开发的宏模型的好处是证明了几个例子，表明模拟与实验结果吻合得很好。这个宏模型的一个重要应用是建议在有源滤波器的动态范围的计算。
A nonlinear macromodel for integrated circuit operational amplifiers has been developed for frequency-domain analysis. The main difference between this macromodel and those previously reported in the literature is that this model considers the influence of frequency and amplitude on the transfer function of the operational amplifier. The macromodel also includes the slew-rate effect on the open-loop frequency response and output-voltage distortion computed from the Fourier coefficients. The benefits of the developed macromodel are demonstrated by several examples, showing that the simulation is in good agreement with the experimental results. One important application of this macromodel is suggested to be in the computation of the dynamic range of active filters.