266.66 MHz fixed-frequency oscillator for precision clock trees
The LMK62A2-266M66SIAT is a fixed-frequency clock oscillator from Texas Instruments, delivering a 266.66 MHz output from a 3.135 V to 3.465 V supply while drawing 95 mA typical. The 6-QFM package (5x3.2 mm) keeps the footprint small for dense PCB layouts where a clean reference clock is needed for a SerDes, FPGA, or high-speed ADC.
Supply voltage and current — what they mean for the rail design
The 95 mA supply current is the total drawn from that rail; budget it into the regulator's load calculation alongside the rest of the clock tree. Because the oscillator is a fixed-frequency device (no PLL or programming pins), the output frequency is set at manufacture and requires no external configuration — just power and a ground plane.
The 6-SMD Module package (6-QFM, 5x3.2 mm) is a surface-mount ceramic or laminate package with a ground pad underneath. The exposed pad should be soldered to a thermal via array on the PCB to pull heat into the inner ground plane — the datasheet's recommended land pattern is the reference for the stencil aperture. Available in Tape & Reel (TR) for automated pick-and-place or Cut Tape (CT) for prototype quantities. The base product number LMK62A2 identifies the family; the suffix encodes the frequency and temperature grade.