Key benefits - Improves waveform quality with a 70 MHz low-pass filter, delivering a better signal-to-noise ratio for generated waveforms. - Easy amplitude adjustment via an accessible pin that controls the DAC reference voltage, enabling precise amplitude for specific applications. - Flexible duty cycle control for the rectangular output: by adjusting the variable resistance, the duty cycle of the output can be tuned. - Stable and precise oscillator options: the AD9850 version uses a 125 MHz active oscillator, while the AD9851 version uses a 30 MHz active oscillator, ensuring reliable frequency generation. What it does - AD9850 model highlights - Frequency range: 0 to 40 MHz. - Outputs: 2 sine waves and 2 square waves. - Square wave frequency range: 0 to 1 MHz. - Harmonic distortion may increase above 20 to 30 MHz. - Waveform quality enhanced by the 70 MHz low-pass filter. - Data input: selectable between parallel and serial data input. - Amplitude adjustment: accessible pin for easy adjustment of output amplitude. - Duty cycle control: adjustable via the variable resistance. - Oscillator: stable 125 MHz active oscillator. - General features common to the module - The module includes a low-pass filter to improve waveform integrity. - The amplitude can be configured through a dedicated pin, facilitating application-specific levels. - Duty cycle of the rectangular output can be modified through a potentiometer or variable resistance. - The device provides options for parallel or serial data input, enabling compatibility with different control schemes. - The module is shipped with a stable oscillator configuration appropriate to the model (125 MHz for AD9850, 30 MHz for AD9851). Specifications at a glance - AD9850 frequency range: 0–40 MHz. - Outputs: 2 sine waves and 2 square waves. - Harmonics: distortion can increase above 20–30 MHz. - Square wave frequency: 0–1 MHz. - Waveform quality: improved SNR due to 70 MHz low-pass filter. - Data input: selectable between parallel and serial. - Amplitude adjustment: via accessible pin. - Duty cycle adjustment: via variable resistance. - Oscillators: stable 125 MHz (AD9850) and 30 MHz (AD9851). - Size: 4.5 x 2.6 cm. Applications and use scenarios - Laboratory signal generation for RF and communications research - Generate clean sine and square waves across a wide frequency range to test filters, amplifiers, and RF circuits. - Use the amplitude pin to calibrate signal levels and reproduce precise test conditions. - ADC/DAC and instrumentation testing - Provide reference waveforms for characterizing digitizers and converters. - Employ the parallel or serial data input to integrate with various test benches and microcontroller or FPGA systems. - Electronics prototyping and hobbyist projects - Create adjustable waveform sources for microcontroller timing tests, audio signaling, or signal conditioning demonstrations. - Utilize the duty cycle control for experiments requiring non-symmetric waveforms. Physical characteristics - Size: 4.5 cm by 2.6 cm. - Construction designed for compact integration in lab benches and test setups. - Includes a 70 MHz low-pass filter to enhance waveform quality.