125 MHz LVDS clock from a MEMS resonator
The DSC1103DI5-125.0000T is a 125 MHz MEMS-based XO (Standard) with LVDS output, from Microchip's DSC1103 series. The MEMS resonator eliminates the quartz crystal start-up time and vibration sensitivity typical of conventional oscillators — the output is valid within microseconds of power-up, which matters for a SerDes reference clock that must lock before the link partner times out.
±10 ppm stability over industrial temperature
Frequency stability is ±10 ppm across the full -40 to +85 °C operating range. For a 125 MHz clock, ±10 ppm translates to ±1250 Hz of total frequency error — tight enough for 1 GbE (1000BASE-T) jitter budgets and most FPGA transceiver reference requirements.
Standby power-down and supply current
Maximum supply current is 32 mA when active; the Standby (Power Down) function drops draw to 95 µA max by disabling the output and internal PLL. In a battery-powered system that gates the clock to an idle transceiver, the 95 µA standby current is low enough to leave the oscillator powered continuously without a separate load switch.
The part is suitable for new designs and production builds without a lifecycle risk flag.