SIT5387

The SiT5387 is an AEC-Q100 automotive-grade ±100 ppb high-frequency MEMS Precision Super-TCXO. This device, based on the Elite Platform, is engineered for best dynamic performance. By leveraging SiTime’s unique DualMEMS™ and TurboCompensation™ temperature sensing technology, the SiT5387 delivers the most stable timing in the presence of environmental stressors – airflow, temperature perturbation, vibration, shock, and electromagnetic interference (EMI).

SiT5387 can be factory-programmed to any combination of frequency, stability, voltage, and pull range. This programmability enables designers to optimize the clock configuration while eliminating the long lead time and customization costs associated with quartz TCXOs where each frequency is custom built.

Specifications

Features

Industry's most stable automotive-grade TCXO

• ±100 ppb over AEC-Q100 Grade 2 temperature from -40 °C to 105 °C
  

Up to 220 MHz output frequency

• Eliminates need for frequency multipliers
  

Exceptional dynamic stability under airflow, fast temp. ramp

• 3e-11 ADEV at 10 second average time
  
• ±1 ppb/°C frequency slope (ΔF/ΔT), 10 °C/min. ramp
  

• Ensures system level quality of service for telecom and networking equipment in hostile environments
  

20x better phase noise under vibration

• Minimizes call and/or link drops in high-vibration environments
  

No activity dips or microjumps

• Eliminates any need for costly screening or burn-in tests
  

0.2 ps/mV power supply noise rejection (PSNR)

• Reduces BOM by eliminating a dedicated LDO for TCXO
  

70 g vibration and 30,000 g shock

• Best robustness and reliability in harsh conditions
  

LVCMOS or Clipped sinewave output

• Optimizes for best balance between EMI and jitter
  

Rich programmable features

• Any frequency between 60 to 189 MHz and 200 to 220 MHz
  
• 2.25 to 3.63 V
  
• Large pull range from ±6.25 to ±3200 ppm:
  

• Customize TCXO specifications for optimal system performance
  

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