High Performance Source for ADC and Audio Test with Novel Digital Predistortion

High Performance Source for ADC and Audio Test with Novel Digital PredistortionUltralow distortion and low noise high performance signal generators are required to test precise instruments. New concepts are required to ensure a characterization at a high-performance level. Reference designs like the ADMX1002 simplify this task by taking advantage of high-performance precision digital-to-analog converters (DACs), which have reached unprecedented levels of accuracy and resolution.  The addition of a novel digital predistortion algorithm can further enhance the test signal fidelity, enabling unprecedented low distortion signals in a small, low-cost form factor. This article demonstrates that the demands for ADC and audio test can be met with a carefully designed signal path and signal processing techniques.