1. DDSSignalgeneratorModulEntwicklungsplatineThe module can output 2 sine waves and 2 square waves, with a frequency range of 0–40 MHz for AD9850 and 0–1 MHz for square wave. The harmonics increase and the waveform becomes impure after 20 30 MHz frequency. The signal to noise ratio of the waveform is improved by using a 70 MHz low pass filter. 2. Amplitude adjustment and variable duty cycleThe module has a pin (PIN, which generates the DA reference, enabling simple adjustment of the output waveform amplitude. The duty cycle of the square wave can be adjusted by a variable resistor. 3. Oscillator and flexible input: The AD9850 module has an active oscillator with 125 MHz, while the AD9851 module uses an active oscillator with 30 MHz. The module supports both parallel and serial data input. 4. Compact design: The dimensions of the module are 5 cm x 2.6 cm, making it compact and space saving.