提出了一个多输出电流差分跨导放大器(MO-CCCDTA),利用它设计了一个电流模式二阶带通、二阶高通带阻和二阶低通带阻电路,以此为基础,利用级联法设计了电流模式六阶椭圆带通滤波器.该滤波器仅使用3个MO-CCCDTA、1个CDTA和7个电容,通过调节偏置电流,各滤波器参数均能被电控调谐.计算机仿真表明电路正确有效.%A modified MO-CCCDTA is present. A current-mode second-order band-pass, high-pass band stop, and low-pass band stop circuits using MO-CCCDTAs are given. Moreover, a current-mode sixth-order elliptic band-pass filter is realized by cascade method. The circuit uses only three MO-CCCDTA s, one CDTA and seven capacitors. The parameters of the circuit can be tuned electronically by tuning bias currents. The results of computer simulation show the analysis method is valid and effective.
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