PLL clock synthesizer for high-speed timing
The Texas Instruments LMK04111SQX/NOPB is a PLLatinum™ frequency synthesizer with an integrated PLL, designed to generate low-jitter clock signals up to 1.08 GHz. It accepts LVCMOS, LVDS, or LVPECL reference inputs and delivers 2VPECL or LVPECL outputs, making it a fit for clocking high-speed ADCs, DACs, FPGAs, and SerDes transceivers in telecom and data-converter applications.
The supply range is 3.15 V to 3.45 V, a tight window that demands a clean, regulated rail — a 3.3 V LDO with low noise is the typical pairing.
The 2:5 input-to-output ratio means two reference inputs can be muxed to five clock outputs — useful for fan-out in multi-rail clock trees.