The SiT5356 is a ±100 ppb precision MEMS Super-TCXO. This device is engineered for best dynamic performance. It is fully compliant to the GR-1244 Stratum 3 oscillator specifications. By leveraging SiTime’s unique DualMEMS™ and TurboCompensation™ temperature sensing technology, the SiT5356 delivers the most stable timing in the presence of environmental stressors – airflow, temperature perturbation, vibration, shock, and electromagnetic interference (EMI).

SiT5356 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.

Watch dynamic performance of Elite Super-TCXO vs 50-ppb quartz TCXO under airflow, temp. ramp, tap test, and VDD fluctuation

Frequency
1 to 60 MHz
Frequency Stability (ppm)
±0.1, ±0.2, ±0.25
Operating Temperature Range (°C)
-20 to +70, -40 to +85, -40 to +105
Oscillator Type
TCXO-SE
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
Features
Precision TCXO
Voltage Supply (V)
2.5, 2.8, 3, 3.3
Availability
Production
Applications
  • SONET/SDH Stratum 3
  • Synchronous Ethernet (G.8262, Options 1 and 2)
  • Small cells
  • IEEE 1588 boundary clocks and grandmasters
  • Optical transport (OTN, OLT, etc.)
  • Cable Model Termination System (CMTS)
  • COSPAS/SARSAT
  • Broadband satellite
  • Instrumentation
  • Serial-data Links
  • Wireless & Backhaul
  • Fiber, Cable, DSL
  • Precision GNSS
  • RADAR & LIDAR
  • GPS/GNSS Modules
  • Power & Energy
  • Defense & Aerospace
  • Railroads
  • Long-Range Communications
  • Asset Tracking
  • Indoor Positioning
  • Smart Farming
  • Smart City

5356

Features & Benefits

Exceptional dynamic stability under airflow, fast temp. ramp

  • ±100 ppb over-temp. stability
  • 3e-11 ADEV at 10 second average time
  • ±2.5 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

LVCMOS or Clipped sinewave output

  • Optimizes for best balance between EMI and jitter

Rich programmable features

  • Any frequency between 1 to 60 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

 

Quality Documents

Additional Resources