摘要
针对有源开关电容滤波器LMF100芯片,设计了一种基于LMF100与单片机由低通、高通构成的四阶有源带通滤波器,带通滤波器的截止频率由外部时钟决定,具有截止频率精确及可调、系统功耗低的特点。最后给出了实际电路的调试结果。
This paper gave design of a bandpass filter, which was composed with highpass and lowpass, based on LMF100 and MPU. The cutoff frequency of the bandpass filter was produced by the outer clock, with characters of precise and controllable cutoff frequency, lower power of system. At last, the debugging result of the actual circuit was gaven.
出处
《微处理机》
2006年第1期77-78,82,共3页
Microprocessors
