- The pin 12 DA reference provides a convenient way to adjust the output waveform amplitude, enabling quick calibration and level matching with external DACs or control circuitry. - Square wave output range: 0 to 1 MHz, suitable for timing references, digital testing, and basic signal integrity experiments. - 70 MHz low-pass filter enhances waveform quality by attenuating higher-order harmonics, improving signal cleanliness within the intended bandwidth. - Above 20-30 MHz, harmonic content increases and the waveform becomes progressively more distorted, indicating the practical frequency limit for maintaining waveform purity with this module. Use scenarios - Calibrate and test DAC/ADC inputs in lab setups by providing a stable, amplitude-adjustable square wave within the 0-1 MHz range. - Develop and debug microcontroller timing, PWM, or digital communication interfaces that require a clean reference signal at low to moderate frequencies. - Demonstrate and study signal integrity, filter performance, and harmonic content in educational or training environments. Key attributes at a glance - Function: adjustable amplitude square wave source with built-in LPF for cleaner output. - Compatibility: designed for applications needing a DA reference on PIN12 and a reproducible 0-1 MHz square wave. - Performance: 70 MHz low-pass filter enhances waveform quality within specified range; note distortion tendency beyond 20-30 MHz.