Crystals above 30 MHz (nearly >two hundred MHz) are commonly operated at collection resonance wherever the impedance seems at its least and equivalent on the sequence resistance. For these crystals the sequence resistance is specified ( It's important to notice that oscillators Use a vital parameter—the resonant resistance (RR), which https://greatbookmarking.com/story19030889/not-known-details-about-smd-crystal-oscillators