SIT5155

The SiT5155 Super-TCXO is engineered for high-accuracy GNSS systems in precision farming, survey, construction, and other industrial equipment. Based on SiTime’s unique DualMEMS™ and TurboCompensation™ temperature sensing technology, this device delivers exceptional dynamic performance that enables the fastest lock to satellites in the presence of shock, vibration, rapid temperature change, power supply noise, and electromagnetic interference (EMI). The SiT5155 further minimizes the loss of satellite lock by eliminating activity dips and micro jumps.

Exceptional dynamic stability under airflow, fast temp. ramp

• ±500 ppb over-temp. stability
  
• 3e-11 ADEV at 10 second average time
  
• ±15 ppb/°C frequency slope (ΔF/ΔT), 0.5°C/min ramp
  

20x better phase noise under vibration

• Minimizes loss of satellite lock in high-vibration environments
  
  

No activity dips or micro jumps

• Eliminates the need for costly screening or burn-in test
  
  

0.2 ps/mV power supply noise rejection (PSNR)

• Reduces BOM by eliminating a dedicated LDO for the TCXO
  

LVCMOS or Clipped sinewave output

• Optimize for best balance between EMI and jitter
  

Digital frequency tuning through I2C

• Eliminate frequency shift caused by board noise
  

Superior reliability

• 1 billion hours MTBF
  
• Lifetime warranty
  
• Reduces repair costs and field failures due to clock components