MEMS oscillator replaces quartz in 25 MHz clock tree
The DSC1101CE2-025.0000 is a MEMS-based XO (Standard) from Microchip's DSC1101 series, delivering a 25 MHz CMOS output with ±25 ppm frequency stability across its -20°C to 70°C operating range. Unlike quartz crystal oscillators, the MEMS resonator is less susceptible to vibration and shock, and offers faster startup — typically under 5 ms — though the datasheet should be consulted for exact timing.
Supply voltage and power-down for system integration
The wide supply range of 2.25V to 3.6V lets this oscillator run directly from a 2.5V or 3.3V rail without an intermediate LDO, simplifying the power tree.
Package and mounting for PCB layout
Housed in a 6-SMD, No Lead package measuring 3.20 mm x 2.50 mm with a seated height of 0.90 mm, this oscillator fits compact designs where board area is constrained. Surface-mount assembly follows standard reflow profiles for no-lead packages; the small footprint requires careful pad design to match the recommended land pattern in the datasheet.