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 HDQN sereis. XO (Crystal Oscillator) versions are HDQF and HDQN series. Mercury 25QGDQF536 series VCXO (Voltage Controlled Crystal Oscillator), 6 Pads SMD 2.5 V LVDS square wave 100 Ω across Q and Q\ load, 10 MHz ~ 1.5 GHz, 5.0x3.2x1.2 mm A QuikXO (quick-turn quick-turn delivery) product. Delivered in days, not weeks.