提出了用单 CC 实现电流模式双二阶滤波器 ,通过将不同的网络 N与单 CC 连接 ,即能在电流传送器的输出端实现二阶低通、高通、带通、陷波和全通滤波函数 .讨论了滤波器的灵敏度 ,完成了实际电路 MOS管级的计算机仿真 .该电路不仅结构简单 ,无源灵敏度低 ,而且直接从 z端输出 ,因而具有带负载能力强的特点 . A single-CC current mode biquad filter is proposed. By connecting different networks N to a single CC, second-order lowpass, highpass, bandpass, notch and allpass can be realized at the output of the current transmitter The filter function is discussed, the sensitivity of the filter is discussed, and the computer simulation of the actual MOS transistor level is completed. The circuit not only has the advantages of simple structure, low passive sensitivity, but also output directly from the z terminal.