Key benefits Improved waveform quality: a 70 MHz lowpass filter provides a cleaner signal and better signaltonoise ratio for generated waveforms. Amplitude adjustment with pin access: an accessible pin that controls the DAC reference enables convenient adjustment of output amplitude to suit different applications. Flexible square wave duty cycle: by adjusting the variable resistor, the comparator reference input voltage can be changed, allowing different square wave duty cycles. Stable and accurate oscillators: the AD9850 module uses a 125 MHz active oscillator, and the AD9851 module uses a 30 MHz active oscillator, ensuring reliable frequency generation. Compact and practical design: 4.5 cm by 2.6 cm footprint suitable for compact test setups. Specifications and capabilities AD9850 frequency range: 0 to 40 MHz Outputs: 2 sine waves and 2 square waves Harmonic distortion: may increase above 20 to 30 MHz Square wave frequency: 0 to 1 MHz Signal quality: improved waveform SN ratio with a 70 MHz lowpass filter Data input method: supports both parallel and serial data input Amplitude control: accessible pin for easy amplitude adjustment Duty cycle control: square wave duty cycle adjustable via the variable resistor Oscillators: stable 125 MHz active oscillator (AD9850) and 30 MHz active oscillator (AD9851) Dimensions: 4.5 cm x 2.6 cm Use scenarios Lab waveform generator for testing and measurement: produce clean sine or square waves up to 40 MHz, adjust amplitude via the DAC reference pin, and shape duty cycle for precise testing of DACs, ADCs, filters, and amplifiers. RF and mixedsignal prototyping: use as a flexible local oscillator or test source in RF/mixedsignal experiments, with selectable parallel or serial data input and adjustable duty cycle to explore modulation and filtering effects. Education and electronics hobby projects: demonstrate DDS concepts, compare sine and square outputs, and experiment with waveform shaping, data interfaces, and frequency planning in a compact module.