Selecting Crystals For Stable Oscillatorsqiyan307@52RD Selecting Crystals For Stable Oscillators Understanding how quartz-crystal resonators operate can lead to designing crystal oscillators with improved stability and better noise performance. Oscillators are critical components in RF and digital designs. Although oscillator circuitry may already be provided as part of an integrated circuit (IC), a product-design engineer may still be required to select the crystal resonator and external capacitors. To achieve final product success, it is important that the designer has a basic understanding of how an oscillator and crystal function to select the correct crystal and external capacitors for the device. Poor crystal selection can lead to a product that does not operate properly, fails prematurely, or will not operate over the in……