1 to 60 MHz, ±0.1 to ±0.25 ppm precision Super-TCXO

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The Endura™ SiT5346 is a ruggedized ±100-ppb precision Super-TCXO with an acceleration sensitivity as low as 0.004 ppb/g (typical) and high temp operation up to 105°C. This device is engineered for harsh environments and is ideal for high-reliability aerospace and defense applications. By leveraging SiTime’s unique DualMEMS™ temperature sensing and TurboCompensation™ technology, the SiT5346 delivers the most stable timing in the presence of environmental stressors – airflow, temperature perturbation, vibration, shock, and electromagnetic interference (EMI).

This MEMS-based Endura Super-TCXO 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.

The SiT5346 is 100% screened through the SiTime Endura process flow to provide high reliability

View related products: 60 to 220 MHz | ±50 ppb | Ruggedized TCXO lineup


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Image: Elite TCXO Ceramic 5032 10-pin package, top & bottom
"Specs" "Value"
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
Package Type (mm²) 5.0 x 3.2 10-pin
Oscillator Type TCXO-SE
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
Voltage Supply (V) 2.5 , 2.8 , 3 , 3.3
Features Ultra-low acceleration sensitivity, MIL-STD-55310, MIL-PRF-883
Availability Production

Rugged performance under airflow, fast temp. ramp

  • ±100 ppb over-temp stability
  • 1.5e-11 ADEV at 10 second average time
  • ±1 ppb/°C frequency slope (ΔF/ΔT)
    • Ensures better system-level reliability of equipment operation in hostile environments

Best acceleration sensitivity

  • As low as 0.004 ppb/(typical)

20x better phase noise under vibration

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

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 component

 

  • Airborne Communications
  • Command & Control
  • Manpack Radios
  • Radar
  • Field Communications
  • UAV Communications
  • Vehicle Communications
  • Avionics
  • Airframe Control
  • Engine Management / Control
  • Flight Computer Platform
  • Satellite Base Station
  • LEO SatCom
  • GNSS Receivers
  • Ruggedized Applications

Time Error Simulation Software – Simulate and analyze the impact of the local oscillator

Frequency Slope (dF/dT) Calculator – Calculate frequency slope over temperature

Time Machine II Programmer – Program frequency, voltage, stability & more

Ceramic 5032 10-Pins 3D Step Model – Preview oscillator packages in 3D

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