The SiT5187 AEC-Q100 automotive-grade Super-TCXO is a highly flexible, tight-stability oscillator capable of supporting up to 220 MHz. 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 SiT5187 is engineered for high-reliability systems in audomotive.

The SiT5187 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.

SiT5187
Oscillator Type TCXO-SE
Frequency 60 to 220 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)
Output type LVCMOS
Package Type (mm²) 5.0 x 3.2 10-pin
Phase Jitter (RMS) 0.31 ps
Features Precision TCXO
Voltage Supply (V) 2.5, 2.8, 3, 3.3
Pull Range (ppm) ±6.25, ±10, ±12.5, ±25, ±50, ±80, ±100, ±125, ±150, ±200, ±400, ±600, ±800, ±1600, ±3200

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 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:
    • 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
  • 高精度GNSS
  • GPS/GNSS Modules