MEMS oscillators: ultra-robust for autonomous driving

December 13, 2017 // By Julien Happich
SiTime Corporation's SiT9386 and SiT9387 oscillators deliver stable and reliable timing signals for AI processors in automotive supercomputers, as well as for the interfaces that move data, such as PCI Express and 10G, 40G, and 100G Ethernet.

Operating stably across temperature changes, shock, and vibration, the SIT938X differential MEMS oscillators are the only timing solutions capable of withstanding such environmental stressors, while still delivering precision timing for ADAS operation, claims the manufacturer. The SiT9386/7 oscillators are the first automotive products built on the Elite Platform, a proprietary architecture that delivers excellent performance in harsh operating conditions, 30 times better than quartz in shock performance (10,000 g), 20 times better than quartz in reliability (over 1 billion hours MTBF), an extended temperature range of -40 to +105°C and a robust operation in the presence of system noise (0.02ps/mV PSNR). The chips can deliver any frequency between 1MHz and 725MHz, accurate to 6 decimal places, with a 0.23ps typical RMS phase jitter (random) and a frequency stability as low as ±25 ppm. The devices come in a 3.2x2.5mm package size for size-limited applications but also in an industry-standard 7.0x5.0mm package.

SiTime Corporation -


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