48 MHz LVPECL MEMS oscillator for high-speed clock trees
The DSC1122CE5-048.0000 is a MEMS-based XO (Standard) from Microchip's DSC1122 series, delivering a 48 MHz LVPECL output with ±10 ppm frequency stability over -20°C to +70°C. LVPECL differential signaling makes this part suitable for low-jitter clock distribution in 1000BASE-T Ethernet PHYs, FPGA reference clocks, and high-speed SerDes applications where a standard CMOS output would introduce excessive phase noise.
The oscillator operates from a single 2.25V to 3.6V supply, drawing 58 mA max when enabled and 22 mA max when disabled via the Enable/Disable function.
MEMS resonator advantage over quartz
A quartz oscillator at the same 48 MHz and ±10 ppm would typically require a larger package or external compensation; the MEMS approach keeps the footprint at 3.20 mm x 2.50 mm with a seated height of 0.90 mm.