The 2 oscillator circuits down below are appropriate for making use of crystal oscillators in series or parallel manner: Modeling of nonlinear micromechanical resonators and their simulation with the harmonic‐balance method PDF The type of amplifier you may need will depend on the frequency. Op-amps may match at minimal-frequency gates https://socialfactories.com/story4416789/5-easy-facts-about-bulk-crystal-oscillator-described