2.6 GHz PLL with 3:12 fanout — the integration story
The LMK04816BISQX/NOPB is a PLLatinum™ clock synthesizer and jitter cleaner from Texas Instruments, combining a phase-locked loop with a 3:12 input-to-output fanout buffer. The 2.6 GHz maximum frequency sets the upper band edge for the clock outputs — useful for distributing high-speed reference clocks to ADCs, DACs, FPGAs, or SerDes transceivers where phase noise at the carrier frequency determines the converter SNR.
Multi-format I/O — LVCMOS, LVDS, LVPECL
Both the input and output stages accept and deliver LVCMOS, LVDS, and LVPECL signal levels. This means a single BOM line can interface with a crystal oscillator or a prior-stage PLL (LVCMOS input), fan out to multiple LVDS receivers on an ADC array, and also drive an LVPECL-terminated clock input on an FPGA — all without external level translators. The differential input-to-output path (Yes/Yes) preserves the common-mode rejection needed for long board traces or backplane clock distribution.
Industrial temperature grade and board integration
The 64-WQFN (9x9) footprint with exposed pad demands a solder paste stencil aperture covering at least 50% of the pad area for void-free thermal attachment — the datasheet's recommended land pattern is the starting point, not a suggestion. Tape and reel packaging aligns with high-volume pick-and-place assembly. The base product number LMK04816 covers the family; the BISQX/NOPB suffix denotes the industrial temperature range, the specific output configuration, and the lead-free (NOPB) finish.