PLL-based clock conditioner for high-speed signal chains
The LMK03002ISQ/NOPB is a PLL-based clock conditioner from Texas Instruments that accepts LVCMOS, LVDS, or LVPECL inputs and delivers a conditioned LVPECL output up to 1.724 GHz — suitable for cleaning jitter on a reference clock feeding high-speed ADCs, DACs, or SERDES transceivers. The integrated PLL and 1:4 fanout buffer (ratio input:output 1:4) let a single device take one reference and distribute four phase-aligned LVPECL copies, reducing component count on the clock tree.
Industrial temperature range and supply voltage
Supply voltage is 3.15 V to 3.45 V, a narrow window that demands a clean 3.3 V rail with less than 5% ripple — a local LDO or pi-filter ahead of the device is typical practice.
Package, footprint, and thermal management
The exposed pad also serves as the ground return for the PLL and output drivers; a solid connection to the PCB ground plane is critical for phase-noise performance.