AEC-Q100 qualified MEMS oscillator at 24.75 MHz
The DSC1121CL2-024.7500T is a MEMS-based XO (Standard) from Microchip's DSC1121 series, delivering a 24.75 MHz CMOS output clock with ±25 ppm frequency stability. The MEMS resonator inherently resists vibration-induced phase noise better than a bulk quartz blank, which matters for engine-bay or chassis-mounted electronics where the board sees constant mechanical stress.
Supply rail flexibility and power budget
The 2.25V to 3.6V supply range lets this oscillator drop into 2.5V, 3.0V, or 3.3V domains without a separate level translator — the internal LDO regulates the MEMS core from whichever rail is present. That 13 mA saving per clock tree matters in a multi-oscillator design where the total disable current stays under a single linear regulator's quiescent budget.
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 the standard 3.2 x 2.5 mm land pattern common to MEMS and quartz oscillators. The surface-mount, no-lead construction eliminates the solder-joint fatigue failure mode seen in gull-wing packages under thermal cycling — a relevant point for AEC-Q100 Grade 1 applications at 105°C. The Enable/Disable pin is active-low; tying it to Vdd keeps the output running, while pulling it low tristates the output and reduces current draw to the disable figure.