开关电容滤波器（超临界流体）是著名的易用性。他们是正确的，不需要外部元件，并保持在所有指定的经营状况预测的响应。对于集成电路的超临界流体，他们紧紧相匹配和修整的内部电容产生一个固定的频率和相位响应，这是纯粹的外部时钟频率成正比。Maxim > App Notes > FILTER CIRCUITS (ANALOG) Keywords: Switched-Capacitor IC Forms Notch Filter Nov 01, 2000 APPLICATION NOTE 431 Switched-Capacitor IC Forms Notch Filter Switched-capacitor filters (SCFs) are renowned for ease of use. They are accurate, require no external components, and maintain a predictable response over all specified operating conditions. For integrated-circuit SCFs, their tightly matched and trimmed internal capacitors produce a fixed frequency and phase response that is proportional solely to the external clock frequency. To construct a notch (band-reject) or passband response, the more flexible universal filter is needed. Universal filters (either SCF or continuous-time types) allow any combination of low-pass, h……