MCU AT89C51 is adopted to control DDS chip AD9850 to produce the sine signal which frequency may be adjusted. The pure signal can be obtained through the low pass filter,and then target signal is drove by the power amplifier.
英
美
- 采用單片機AT89C51控制DDS芯片AD9850產(chǎn)生頻率可調的正弦信號,并通過(guò)低通濾波器得到純正的信號,最后經(jīng)過(guò)功率放大驅動(dòng)電路輸出目標信號。
