PLL clock conditioner for high-frequency timing chains
The Texas Instruments LMK04010BISQE/NOPB is a PLL-based clock conditioner designed to clean up jitter on reference clocks and generate low-phase-noise output frequencies up to 1.296 GHz.
Input flexibility and supply rail
The part accepts three common input formats — LVCMOS, LVDS, and LVPECL — so it can sit behind a crystal oscillator, an FPGA output, or a previous-stage clock buffer without external level shifters. The supply range is 3.15 V to 3.45 V, a tight window that demands a clean 3.3 V rail with adequate decoupling at the 48-WFQFN exposed pad. With a 2:5 input-to-output ratio, the conditioner can fan out one or two reference clocks to five conditioned outputs, each differential and capable of driving 50-ohm terminated lines directly.