基于AD9954的多模式信号源电路的设计与实现

Design and realization of multi-mode signal source hardware circuit based on AD9954

设计了一种由AVR单片机ATmega16L控制AD9954实现的程控信号源电路,给出单音频、RAM控制和线性扫频3种模式下AD9954输出信号的调控方法.此设计可以方便地实现对信号源电路输出频率、相位和工作模式的控制,使信号源电路能输出高稳定度、高分辨率的信号.

A program controlled signal source hardware circuit realized by AVR single-chip microcomputer ATmega16Lcontrols AD9954is designed.The modulating methods of output signal of AD9954based on three modes（single-tone mode,RAM controlled modes and linear sweep mode）are given.The circuit design can conveniently control the output frequency,phase and working mode,and the circuit can output signals with high stability and high resolution.