SIT5157

The SiT5157 Super-TCXO is a highly flexible, tight-stability oscillator capable of supporting up to 220 MHz. Based on SiTime’s unique DualMEMS™ and TurboCompensation™ temperature sensing technology, this device delivers excellent dynamic performance in the presence of common environmental hazards, such as airflow, temperature perturbation, vibration, shock, power supply noise and electromagnetic interference (EMI). The SiT5157 is engineered for high-reliability systems in industrial, server and storage, networking and telecom.

The SiT5157 can be factory-programmed to any combination of frequency, stability, voltage and pull range. This programmability enables designers to customize MEMS TCXO configuration for best system performance while eliminating the long lead time and customization costs associated with quartz devices.

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 microjumps

• Eliminates the need for costly inspection 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
  

Rich programmable features

• Any frequency between 60 to 189 MHz and 200 to 220 MHz
  
• ±0.5 ppm, ±1 ppm, ±2.5 ppm
  
• 2.25 to 3.63 V
  
• Large pull range from ±6.25 to ±3200 ppm:
  

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 component