摘要
提出了一种基于DDS(Direct Digital Synthesize)AD9850的频率、相位、幅值均可调节的正弦信号发生器。该正弦信号发生器采用AT89S52单片机为控制器,D/A转换器TLC5615与乘法器AD534相结合,实现输出正弦信号幅值可控,采用AD811控制输出正弦信号电压幅值,产生50 Hz～3 kHz频段的正弦波,步进频率为50 Hz。该信号发生器可应用在交变磁场测量仪和试验仪器、工程设计的函数发生器中。
This paper presents a sinusoidal signal generator,which the signal,frequency,phase and amplitude are adjustable, based on DDS（Direet Digital Frequency Synthesis）.The sinusoidal signal generator which adopts MCU AT89S52 is used for controller, the controllability of sinusoidal signal amplitude is adjusted by the union of digital-to-analog transformer TLC5615 and multiplier AD534.The system sinusoidal signal frequency is between 50Hz and 3 kHz,step frequency is 50Hz.It can be applied to the alternating magnetic measuring instrument,and frequency vibrator in testing instrument or engineering design.
出处
《国外电子元器件》
2008年第6期23-25,共3页
International Electronic Elements
