摘要
以单片机和FPGA为控制核心,设计基于开关电容滤波器的程控滤波器。该滤波器具有高通、低通和带通功能,通带截止频率在1～30 kHz范围内步进可调,增益在0～60 dB范围内步进可调。
Using MCU and FPGA as the operation core, a type of programmable filter based on switched-capacitor filter is designed in this paper. The filter has the functions of high-pass, low-pass and band-pass.What＇s more, the cut-off frequency of the filter is adjustable in the range of 1-30kHz,and the gain is also adjustable in the range of 0-60dB.
出处
《电子设计工程》
2009年第8期57-59,共3页
Electronic Design Engineering
关键词
开关电容
程控滤波器
椭圆滤波
MAX297
幅频特性测试
switched-capacitor
programmable filter
elliptic filter
MAX297
amplitude-frequency characteristic test
