The DDS module is base on AD9850 which is provided by ADI Company and common used in many DDS module.The chip provide 0-40MHz measurement capability,the AD9850's innovative high speed DDS core provides a 32-bit frequency tuning word, which results in an output tuning resolution of 0.0291Hz for a 125MHz reference clock input.
This module provide you a ready made hardware and you can use serial or paralle pins on board to control the AD9850 for different frequency out put. The duty can be adjust by a adjustable resistor - which change the adjust voltage level of the comparer.
2 channles square wave output and 2 chanles sine wave output
Sine wave: 0-40M; Square wave: 0-1M
Using 70MHz low pass filter, the waveform's SN better clear
Parallel and Seiral data bus selction
Duty cycle adjustedable - Comparator reference input voltage generated by the variable resistor
DA reference Pin12 elicit, easy adjustment wave out amplitude
Size: 42 x 30 x 1.6 mm