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简单的二阶滤波器械就能满足多种滤波要求。例如,低阶的低通滤波器常常能在模数转换器(ADC)应用中足以防止频率混迭现象,或在各种声频应用装置中用于消除高频噪声。同样,低阶的高通滤波器能够很容易地去除电源噪声。在设计带内置增益控
A simple second-order filter can satisfy a variety of filter requirements. For example, low-pass low-pass filters are often enough to prevent frequency aliasing in analog-to-digital converter (ADC) applications or to eliminate high frequency noise in a variety of audio applications. Similarly, low-pass high-pass filters can easily remove power noise. In design with built-in gain control