One kind of signal generator design for laboratory

This function signal generator using DDS technology, AD9851 as the core, LCD12864 as LCD display module and matrix keyboard as input. The signal generator can produce sine and square wave, sine wave output frequency is 100Hz~10MHz and square wave is 100Hz~1MHz, frequency resolution is 0.04 Hz, and any adjustment to achieve two-step adjustment in the frequency range control modes and can display the frequency and stepper units generated waveform information. The signal generator has a frequency stability, fast frequency and amplitude stability, low waveform distortion, a simple circuit structure, small size, low power consumption, low price and so on.