摘要
本文提出了一种新的采用单位增益放大器的开关电容(SC)电路。该电路用于高Q带通滤波器实现时,可获得很小的电容分散,较同类的其它SC电路的电容分散有大幅度的减小。
A new single-amplifier switcbed-cap acitor filter using unity-gain amplifier is presented. When used for the relation of high Q bandpass characteristic, the circuit can obtain much less capacitor spread, and its capacitor spread, compared with other circuits given by literatures, is reduced significantly.
关键词
开关电容
带通滤波器
增益放大器
Switched-capacitor filter
Bandpass filters
Unity-gain amplifier
