The SiT5186 AEC-Q100 automotive-grade Super-TCXO™ is a highly flexible, tight-stability oscillator for high-reliability systems in automotive. Based on the Elite Platform with 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 SiT5186 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.

1 to 60 MHz
Frequency Stability (ppm)
±0.5, ±1, ±2.5
Operating Temperature Range (°C)
-20 to 70 (Grade 4), -40 to 85 (Grade 3), -40 to 105 (Grade 2)
Oscillator Type
Output type
LVCMOS, Clipped Sinewave
Package Type (mm²)
5.0 x 3.2 10-pin
Phase Jitter (RMS)
0.31 ps
Pull Range (ppm)
±6.25, ±10, ±12.5, ±25, ±50, ±80, ±100, ±125, ±150, ±200, ±400, ±600, ±800, ±1600, ±3200
Precision TCXO
Voltage Supply (V)
2.5, 2.8, 3, 3.3
  • Precision GNSS
  • GPS/GNSS Modules


Features & Benefits

Tight stability ±0.5 ppm over AEC-Q100 Grade 2 temperature

  • ±0.5 ppm over temperature -40 °C to 105 °C

Exceptional dynamic stability under airflow, fast temp. ramp

  • 3e-11 ADEV at 10 second average time
  • ±15 ppb/°C frequency slope (ΔF/ΔT), 10 °C/min ramp
    • Enables fastest satellite lock under any operating conditions

    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 screening or burn-in test

      0.2 ps/mV power supply noise rejection (PSNR)

      • Reduces BOM by eliminating a dedicated LDO for the TCXO

      70 g vibration and 30,000 g shock

      • Best robustness and reliability in harsh conditions

      LVCMOS or Clipped sinewave output

      • Optimize for best balance between EMI and jitter

      Rich programmable features

      • Any frequency between 1 to 60 MHz
      • ±0.5 ppm, ±1 ppm, ±2.5 ppm
      • 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

      Additional Resources