基于FPGA和DAC的数字程控放大器和滤波器  

Digital programmable amplifier and filter based on FPGA and DAC

作　　者：石玉军[1] 董安明[1] 向根祥[1] 李素芳[1] 

机构地区：[1]河西学院物理系,甘肃张掖734000

出　　处：《长春工业大学学报》2008年第1期55-59,共5页Journal of Changchun University of Technology

摘　　要：设计并实现了基于数模转换(DAC)R-2R网络的程控放大器和程控滤波器,采用2片8位的DAC0832芯片作为程控电路主体,利用FPGA作为程控放大器及程控滤波器的控制模块,实现了可编程放大参数的设置以及低通和高通滤波截止频率的数字控制。A kind of programmable amplifier and programmable filter based on R-2R network of DAC is designed here, and with two 8-bit DAC0832 chips as the main body of the programmable circuit, applying FPGA as the control module, we realize both the parameter setting and digital control for the cut-off frequency to low and high pass filter.

关 键 词：程控放大器 滤波器 数字控制 FPGA 

分 类 号：TN722[电子电信—电路与系统]