The DSC1103CI2-100.0000 is a 100 MHz LVDS-output MEMS-based oscillator (XO) from Microchip's DSC1103 series, designed as a drop-in replacement for quartz-based oscillators in applications requiring a clean differential clock with tight frequency stability. It operates from a 2.25V to 3.63V supply, which covers 2.5V and 3.3V rails without a separate LDO — a single supply rail serves the oscillator and the downstream LVDS receiver. The MEMS resonator gives it better shock and vibration immunity than a quartz crystal, and the ±25 ppm frequency stability over -40°C to 85°C keeps the clock edge within budget for 1000BASE-T Ethernet, PCIe Gen 1, and FPGA transceiver reference clocks.
The 6-SMD, no-lead package measures 3.20 mm x 2.50 mm with a seated height of 0.90 mm — a compact footprint that fits high-density board layouts but demands a precise pad pattern and via placement to avoid signal integrity issues on the LVDS pair. The no-lead construction means the package's exposed pads are flush with the bottom — the solder joint is directly under the package, so the board-level pad design must match the recommended land pattern (available in the datasheet) to ensure reliable reflow and avoid tombstoning.
Power budget and standby operation
Active supply current is 32 mA max at 100 MHz — typical for a MEMS LVDS oscillator at this frequency. The standby (power-down) disable current drops to 95 µA max, which makes the part suitable for systems that gate the clock to save power during idle periods.