A model for slew-induced distortion in single-amplifier active filters
A model for slew-induced distortion in single-amplifier active filters
复制标题
单放大器有源滤波器中转换引起的失真模型
DOI：
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复制
发表时间：
1978
期刊：
影响因子：
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通讯作者：
P. Allen
中科院分区：
文献类型：
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作者：
P. Allen
在某些操作条件下，运算放大器的输出变化率被限制在一个称为压摆率的值。这种效应会导致压摆引起的失真（SID）。一个模型已经开发，它允许分析SID对任何单放大器有源滤波器。该模型可以确定SID对频率响应的影响以及SID发生的输入信号阈值。该模型还预测了跳跃共振的存在。有代表性的例子，说明SID常用的单放大器实现的影响。它示出了如何可以防止SID的发生。这些结果适用于在高频率和/或大信号电平的有源滤波器的使用。
Under certain conditions of operation, the operational amplifier has the rate of change of its output limited to a value called the slew rate. This effect can result in slew-induced distortion (SID). A model has been developed which permits the analysis of SID on any single-amplifier active filter. The model can determine the influence of SID on the frequency response and the input-signal threshold at which SID occurs. The model also predicts the presence of jump resonance. Representative examples are given which illustrate the influence of SID on commonly used single-amplifier realizations. It is shown how one may prevent the occurence of SID. These results are applicable to the use of active filters at high frequencies and/or large-signal levels.