1.08 GHz PLLatinum clock conditioner — what it does for the clock tree
The Texas Instruments LMK04100SQE/NOPB is a PLLatinum™ clock conditioner that integrates a phase-locked loop (PLL) core with a 2:7 input-to-output ratio, accepting LVCMOS, LVDS, or LVPECL reference inputs and delivering the same signal types on seven outputs. The PLL enables jitter cleaning and frequency synthesis up to 1.08 GHz, making it suitable for cleaning up noisy reference clocks in wireless base stations, test equipment, and high-speed data converters where phase noise on the sampling clock directly degrades SNR.
Input and output flexibility — matching the interface to the board
Both the input and output stages support LVCMOS, LVDS, and LVPECL signalling, which means this single part can bridge between a crystal oscillator or TCXO (LVCMOS) and a high-speed ADC or FPGA that expects LVPECL or LVDS on its clock input. The differential input and output capability (Yes/Yes per the spec) is essential for rejecting common-mode noise on long clock traces in noisy backplane environments.
Supply and temperature — where it lives on the board
The NOPB suffix confirms a lead-free, RoHS-compliant finish — no separate Pb-free qualification step needed.