Arrela Ad9850 DDS Signal Generator Module 0-40mhz

"The AD9850 is a highly integrated device that uses advanced DDS technology coupled with an internal high speed, high performance D/A converter and comparator to form a complete, digitally programmable frequency synthesizer and clock generator function.
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 0.0291 Hz for a 125 MHz 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."