Two sinewave outputs and two squarewave outputs on a single module based on AD9850 and AD9851 DDS devices. This setup provides flexible waveform generation for multiple channels with a compact form factor. Key features and benefits Wide frequency range variants AD9850: 0 to 40 MHz AD9851: 0 to 70 MHz Note: At frequencies above about 20–30 MHz, harmonics can increase and the waveform may become less clean. Square wave output is available up to 1 MHz. Improved waveform quality A 70 MHz lowpass filter is incorporated to enhance signaltonoise ratio and overall waveform fidelity, resulting in clearer sine and square waves. Flexible amplitude adjustment A dedicated DA reference pin enables adjustment of the output waveform amplitude to fit different applications and system levels. Variable dutycycle square waves The square wave duty cycle can be adjusted. Specifications at a glance Output formats: sine waves and square waves Outputs: two sinewave channels and two squarewave channels Frequency ranges: AD9850 0–40 MHz; AD9851 0–70 MHz Square wave frequency range: 0–1 MHz Waveform quality enhancement: 70 MHz lowpass filter Amplitude control: DA reference pin for output level adjustment Duty cycle adjustment Use scenarios Lab signal generator for RF circuits Generate stable sine and square waves to test amplifiers, filters, mixers, and ADC/DAC front ends across the specified frequency ranges. Microcontroller/FPGA based waveform source Provide precise RFlike signals for digital systems, timing references, or communication experiment setups, with adjustable amplitude to suit different requirements. Education and research Demonstrate DDS operation, waveform shaping, and frequency synthesis concepts in electronics labs, with practical controls for amplitude. This module remains consistent with the AD9850/AD9851 family while delivering practical controls for amplitude, and an emphasis on waveform quality through the 70 MHz lowpass filter.