Reducing Second Harmonic Distortion with Symmetrical PCB Layout

Need a low-distortion ADC interface? In this article, we'll discuss how to reduce 2nd harmonic distortion by using symmetric PCB layout.

source https://www.allaboutcircuits.com/technical-articles/need-a-low-distortion-adc-interface-try-to-make-your-pcb-layout-as-symmetrical-as-possible/