150.25 MHz LVPECL MEMS XO — what drives the BOM decision
The DSC1122CI2-150.2500 is a MEMS-based XO (Standard) from Microchip, delivering a 150.25 MHz LVPECL output — the LVPECL logic level demands proper termination (typically 50 Ω to VCC-2V) and AC-coupling at the receiver, so the board layout must account for the DC bias, not just the AC swing.
Supply voltage and power consumption
Operates from 2.25V to 3.6V, covering both 2.5V and 3.3V rails without a separate regulator — the 58 mA max supply current at 150.25 MHz LVPECL is typical for this output type and frequency, and the 22 mA disable current lets the system gate the clock when the downstream PHY or FPGA is in sleep.
Housed in a 6-SMD, No Lead package measuring 3.20mm x 2.50mm with a seated height of 0.90mm — the small footprint suits dense PCB layouts, but the no-lead construction means the solder joints are hidden under the package, so X-ray inspection is the reliable way to verify wetting after reflow.