基于CCⅡ-的多功能电流模式滤波器  

Multifunction Current Mode Filters Based on a Single CCⅡ

作　　者：王春华[1] 郑洁如[2] 

机构地区：[1]湘潭大学自动化与电子工程系 [2]湘潭大学物理系

出　　处：《微电子学》1998年第5期311-315,共5页Microelectronics

摘　　要：提出了一种新的基于ＣＣⅡ－的多功能电流模式滤波器电路。由该电路可得到能同时实现一阶低通和高通滤波，同时实现二阶低通和带通滤波，或同时实现二阶带通和高通滤波功能的滤波器电路。一阶电路仅由一个ＣＣⅡ－和两个接地ＲＣ元件组成，二阶电路由一个ＣＣⅡ－和四个ＲＣ元件（三个接地，一个浮端）组成。与同类电路［６］比较，该电路结构简单，ＲＣ元件少，除一个ＲＣ元件浮置外，其余无源元件均接地，因此更便于集成。分析表明，电路的有源和无源灵敏度均很低。最后，给出了各滤波器的实验结果。A novel multifunction current mode filter circuit based on a single second generation current conveyor(CCⅡ-)is proposed,which is capable of realizing first order lowpass and highpass filtering,second order lowpass and bandpass filtering,second order bandpass and highpass filtering,simultaneously.The first order circuit is composed of 1 CCⅡ- and 2 grounded RC elements,and the second order circuit consists of 1 CCⅡ- and 4 RC elements(3 grounded and 1 floating).Compared with similar circuits,the filter has a simpler structure and fewer elements.Finally,experimental results for each filter are presented.

关 键 词：模拟集成电路 滤波器 电流模式 电流传输器 

分 类 号：TN431.1[电子电信—微电子学与固体电子学] TN713