Robust MEMS Oscillators For Self-driving Cars

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Microchip has unveiled new automotive-grade Micro-Electro-Mechanical Systems (MEMS) oscillators that it claims are 20 times more reliable and 500 times more tolerant to shock than traditional quartz-based crystal devices.

Applications include Advanced Driver Assistance Systems (ADAS), Light Detection and Ranging (LiDAR), in-vehicle Ethernet and autonomous driving.

The new DSA1001, DSA11x1, DSA11x5, and DSA2311 boast highest tolerance to mechanical shock, jarring and stability in harsh environments over a frequency range of 2.3 MHz to 170 MHz. The devices are AEC-Q100 qualified with +/-20 ppm stability over temperatures ranging from -40 to +125 deg C.

Measuring 2.5mm x 2.0mm, the DSA2311 is a dual-output MEMS oscillator that can replace two crystals or oscillators on a board. It is suited for applications that require a complex board with multiple controllers, such as infotainment systems and camera modules.

The device helps designers addresses board space limits, save costs and ease the design process, says Microchip.

Unlike quartz oscillators, MEMS oscillators can also achieve frequency through programming, giving them the flexibility to quickly support new frequencies with shorter lead times, as well as to ramp in volume to help customers meet product launch schedules.

More information: www.microchip.com/timing/automotive

 

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