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SiT5146

TCXO by SiTime

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The SiT5146 from SiTime is a MEMS Super-TCXO that operates from 1 to 60 MHz. It has a frequency stability over the temperature of ±0.5 to ±2.5 ppm and an acceleration sensitivity of 0.004 ppb/g. The oscillator has a 1 Hz step size and provides an LVCMOS or clipped sinewave output. It requires a DC supply voltage of 2.5 V/2.8 V/3.0 V/3.3 V and consumes less than 57 mA of current.

The SiT5146 leverages SiTime’s unique DualMEMS™ temperature sensing and TurboCompensation™ technologies to deliver the best dynamic performance for timing stability in the presence of environmental stressors due to air flow, temperature perturbation, vibration, shock, and electromagnetic interference. These features make the SiT5146 suitable for airborne and terrestrial applications that operate in extremely cold environments. It has an operating temperature from -40°C to +105°C. The oscillator also integrates multiple on-chip regulators to filter power supply noise, eliminating the need for a dedicated external LDO.

The SiT5146 can be factory programmed for any combination of frequency, stability, voltage, and pull range which enables designers to optimize clock configurations while eliminating long lead times and customization costs associated with quartz devices where each frequency is custom built.

The oscillator is available in a surface-mount package that measures 5.0 x 3.2 mm and is suitable for use in ballistics, missiles, munitions, military portable radios, ruggedized communications networks, precision GNSS systems, SATCOM, transponders, military, defense, space, and avionics systems.

Product Specifications

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Product Details

  • Part Number
    SiT5146
  • Manufacturer
    SiTime
  • Description
    1 to 60 MHz MEMS Based TCXO for Airborne and Terrestrial Applications

General Parameters

  • Applications
    Ballistics, missiles, munitions, Military portable radios, Ruggedized communications networks, Precision GNSS systems, SATCOM, Transponders, avionics systems
  • Frequency
    1 to 60 MHz
  • Output Waveform
    LVCMOS, Clipped Sinewave
  • Supply Voltage
    2.25 to 3.63 V
  • Output_Voltage
    0.8 to 1.2 V
  • Current
    44 to 57 mA
  • Load Capacitance
    15 pF
  • Phase Noise
    -168 to -74 dBc/Hz
  • Phase Noise 1 kHz
    -148 to -145 dBc/Hz
  • Phase Noise 10 kHz
    -154 to -146 dBc/Hz
  • Phase Noise 100 kHz
    -154 to -145 dBc/Hz
  • Phase Noise 1 MHz
    -167 to -159 dBc/Hz
  • Pulling
    +/- 6.25 to 3200 ppm
  • Startup Time
    2.5 to 3.5 ms
  • Duty Cycle
    45 to 55 %
  • Fall Time
    0.8 to 4.6 ns
  • Rise Time
    0.8 to 4.6 ns
  • Jitter
    0.31 to 9 ps
  • Frequency Stability
    ±0.5 ppm, ±1 ppm, ±2.5 ppm
  • Package Type
    Surface Mount
  • Dimension
    5.0 x 3.2 mm
  • Grade
    Commercial, Military, Space
  • Operating Temperature
    -40 to 105 Degree C
  • Storage Temperature
    -65 to 125 Degree C
  • RoHS
    Yes

Technical Documents

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