摘要
目的通过编程改变D/A转换器的数字输入量来控制滤波器的截止频率。方法以FP-GA为核心,进行了该系统的硬件电路设计和软件设计。结果实现了基于数模转换(DAC)R-2R网络的程控滤波器。结论本设计能方便地控制滤波器的截止频率。
Aim The cut-off frequency of programmable filter is controlled by the digital input of D/A converter though programming. Methods Hardware circuits and software are designed based on FPGA. Results A kind of programmable filter based on R-2R network of DAC are realized. Conclusion The cut-off frequency of filter can be adjusted easily by the design.
出处
《宝鸡文理学院学报（自然科学版）》
CAS
2008年第2期148-149,163,共3页
Journal of Baoji University of Arts and Sciences(Natural Science Edition)
