AD9518-1 is a 6-output clock generator with integrated 2.5GHz VCO, supporting 1 differential or 2 single-ended reference inputs, optional external VCO/VCXO to 2.4GHz, supporting automatic and manual reference switching/holdover modes, auto-recovery from holdover, supporting 250MHz reference, programmable delay to PFD, supporting digital or analog lock detection, 3 pairs of 1.6GHz LVPECL outputs, each pair shares 1 to 32 dividers with coarse phase delay, additive output jitter 225 fs rms, paired output channel-to-channel skew <10ps, automatic synchronization of all outputs on power-up, manual synchronization of outputs as needed, with serial control port, 48-lead LFCSP package.