MEMS oscillator for automotive timing
The DSC1001AI2-011.7000T is a MEMS-based XO (Standard) oscillator from Microchip's DSC1001 series, delivering a fixed 11.7 MHz output in CMOS logic levels. Unlike a quartz crystal, the MEMS resonator eliminates the need for external load capacitors and provides faster startup — typically under 5 ms — which matters in power-cycled CAN nodes or key-off wake-up circuits.
Power budget and standby mode
Active supply current is 6.3 mA max, a tight figure for a 5.0 mm × 7.0 mm SMD oscillator driving a CMOS load. When the Standby (Power Down) function is asserted, the disable current drops to 15 µA max — low enough to leave the oscillator on the same always-on rail as the MCU's RTC domain without a dedicated load switch.
Frequency stability and supply tolerance
Frequency stability is rated at ±25 ppm across the full temperature and voltage range. For a 11.7 MHz clock, that translates to a maximum drift of ±292 Hz — well within the tolerance of a typical MCU PLL or CAN transceiver reference. The supply voltage accepts 1.8V to 3.3V, so the same oscillator can feed a 1.8V FPGA bank or a 3.3V microcontroller without a level translator.
Package and board layout
Housed in a 4-SMD, No Lead package measuring 7.00 mm × 5.00 mm with a seated height of 0.90 mm. The 0.90 mm profile clears most enclosure lids and conformal coating thicknesses.
The DSC1001 series is Microchip's mainstream MEMS oscillator family, so production is ongoing and the part is suitable for both new designs and volume production.