Precision Timing Solution for Autonomous Vehicles


New Differential Oscillators Deliver 10x Higher Resilience and Reliability to Enable Level 4 and 5 Advanced Driver Assistance Systems

Precision Timing Solution for Autonomous Vehicles

­SiTime Corporation introduced a new automotive oscillator family, based on SiTime’s advanced MEMS technology. The new differential oscillators are 10x more resilient and ensure reliable operation of ADAS across extreme road conditions and temperatures. The launch of the new automotive oscillator, AEC-Q100 SiT9396/7, expands the SiTime served available market (SAM) by $50 million.

As automotive safety systems integrate more sensors and cameras, they are generating an explosion of data that is crucial for safe, autonomous operation. According to the Automotive Edge Computing Consortium, a vehicle generates 2 TB per hour today, increasing 10x to 20 TB per hour by 2025. 

ADAS sensor data must be transferred at very high speeds within the in-car network, even in the most demanding environments, so that ADAS computers can make timely decisions for a safe, reliable journey. 

Timing is the heartbeat of all high-speed communications. Legacy timing technology is one of the weakest links in today’s sophisticated car electronics. In fact, quartz devices are susceptible to vibration and shock, extreme temperatures, and exhibit performance degradation over time. SiTime’s new SiT9396/7 precision timing solutions, based on resilient and reliable silicon MEMS technology are designed to perform in extreme conditions and ensure reliable operation of ADAS computers, domain/zone controllers, radar, and LiDAR subsystems.                                                                  

SiT9396/7 Automotive Timing Family Highlights

  • AEC-Q100 Grade 1 qualified differential oscillators, temperature range (-40°C to 125°C)
  • Grade 2 and 3 also available.
  • High Performance: 150 fs jitter (typ.)
  • ±30 ppm stability: Ensures best system performance in hostile environments (contact SiTime for ±25 ppm or better)
  • 20x better vibration sensitivity
  • Small form-factor: 2.0 x 1.6 mm package
  • Flexible programmable features: 1 MHz to 920 MHz, 1.8 V to 3.63 V
  • Superior reliability: 1 billion hours MTBF
  • Popular differential output drivers include LVPECL, LVDS, HCSL and low-power HCSL, and FlexSwing™ giving developers a flexible range of output options for their automotive system designs.

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