20 MHz MEMS oscillator with automotive-grade qualification
The DSC1121AE2-020.0000T is a 20 MHz fixed-frequency XO (Standard) from Microchip's DSC1121 series, built on a MEMS resonator rather than a quartz crystal. It outputs a CMOS-level clock and includes an Enable/Disable function for power savings in multi-clock systems. Rated AEC-Q100, this oscillator is qualified for automotive temperature and reliability stress — suitable for under-hood or cabin electronics where a standard commercial oscillator would not carry the required PPAP documentation.
Supply voltage, stability, and current draw
The supply voltage spans 2.25 V to 3.6 V, covering 2.5 V, 3.0 V, and 3.3 V rails without a separate regulator. Frequency stability is ±25 ppm across the -20°C to +70°C operating range. Maximum supply current is 35 mA when enabled; disabling the output via the Enable/Disable pin drops the draw to 22 mA max — useful for battery-powered or thermal-sensitive designs that gate the clock in sleep modes.
Package and board mounting
Housed in a 6-SMD, No Lead Exposed Pad package measuring 7.00 mm x 5.00 mm with a seated height of 0.90 mm. The exposed pad on the underside provides a thermal path to the PCB ground plane; the datasheet recommends a thermal-via pattern under the pad for heat spreading. Surface-mount assembly with standard reflow profiles; the MEMS die inside is less sensitive to mechanical shock than a quartz blank, so no special handling beyond normal SMD precautions is required.
Sourced through independent distribution; quoted to order against the BOM quantity.