1.0 ~ 1.2 p. sec. phase jitter (RMS; 12 KHz ~ 20 MHz bandwidth, typical) results from fractional mode technology offers quick-turn quick-turn delivery and low cost. For even lower phase jitter (0.6 ps; integer mode), please evaluate GPQN sereis. XO (Crystal Oscillator) versions are HPQF and HPQN series. Mercury 25GPQF326 series VCXO (Voltage Controlled Crystal Oscillator), 6 Pads SMD 2.5 V LVPECL square wave 50 Ω into Vcc-2V load, 10 MHz ~ 1.5 GHz, 3.2x2.5x1.0 mm.