摘要
介绍了用北京半导体器件一厂的新产品BLB46芯片构成的陷波器。通过逐级运算推出高通滤波函数和低通滤波函数,并在此基础上通过四级运放的适当组合构成带阻滤波函数;并用实例介绍了构成陷波器的具体方法。BLB46芯片是由四级精密运算放大器组成的有源滤波模块。
The bandrejection filter formed by BLB46 chip which produced by Beijing First Semiconductor Device Factouy is introduced. This kind of chip is an active filter module with a fourstage precision operational amplifier. Highpass filter function and lowpass filter function are deduced by calculating step by step. Thus, bandrejection filter function is implemented by fourstage operational amplifier combination in suitable form. Finally the detail means of forming bandrejection filter is described by a practical example.
出处
《大连轻工业学院学报》
1998年第1期52-55,共4页
Journal of Dalian Institute of Light Industry
关键词
陷波器
运算放大器
有源滤波器
active filter
operational amplifier
bandrejection filter