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

The SiT5346 is a ruggedized ±100-ppb Endura™ precision Super-TCXO with an acceleration sensitivity as low as 0.004 ppb/g 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 conforms to MIL-PRF-55310 and MIL-STD-883 specifications.

Looking for other Endura Super-TCXOs? 60 to 220 MHz | ±50 ppb

Small 5.0 x 3.2 mm package, plus industry standard TCXO footprint options
Oscillator Type TCXO-SE
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
Output type LVCMOS, Clipped Sinewave
Package Type (mm²) 5.0 x 3.2 10-pin
Phase Jitter (RMS) 0.31 ps
Features Ultra-low acceleration sensitivity, MIL-STD-55310, MIL-PRF-883
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

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/g

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
  • Land mobile radio
  • Radar
  • Field communications
  • UAV communications
  • Vehicle comms/telemetry
  • Avionics
  • Airframe control
  • Engine management/control
  • Flight computer platform
  • Satellite base station
  • Satcom
  • GNSS/navigation
  • All ruggedized applications

Narrow By:

Document Name Type
Electronics Industry Citizen Coalition Template Other Quality Documents
Manufacturing Notes for SiTime Oscillators Other Quality Documents
SiTime Conflict Metal Declaration Other Quality Documents
SiTime Environmental Policy Other Quality Documents
SiTime Warranty on Date Code (16.72 kB) Other Quality Documents
ISO9001:2015 Certificate of Registration Other Quality Documents
Conflict Minerals Reporting Template Other Quality Documents

Narrow By:

Resource Name Type
AN10002 Termination Recommendations for Single-ended Oscillator Driving Single or Multiple Loads Application Notes
AN10006 Best Design and Layout Practices Application Notes
AN10025 Reliability Calculations for SiTime Oscillators Application Notes
AN10028 Probing Oscillator Output Application Notes
AN10033 Frequency Measurement Guidelines for Oscillators Application Notes
AN10039 TCXO Frequency Stability and Frequency Accuracy Budget Application Notes
SiTime's MEMS First™ and EpiSeal™ Processes Technology Papers
DualMEMS and TurboCompensation Temperature Sensing Technology Technology Papers
SC-AN10033 振荡器频率测量指南 Application Notes
AN10062 Phase Noise Measurement Guide for Oscillators Application Notes
AN10063 TCXO and OCXO Stability Degradation Application Notes
Whack an Oscillator Demo Videos
AN10064 Improved System Performance with Digital Frequency Tuning in Precision Super-TCXOs Application Notes
Ceramic 5032 10-Pins 3D Step Models
SiT5346 Datasheet Datasheets
Timing Solutions for Aerospace & Defense MEMS Timing Solution Brochures/Fliers
SiTime MEMS Timing Solutions (8.5x11) MEMS Timing Solution Brochures/Fliers
How to Design with SiTime TCXOs and OCXOs Videos
How to Design with SiTime TCXOs and OCXOs (Download MP4 Video) Videos
SiTime MEMS Timing Solutions (A4) MEMS Timing Solution Brochures/Fliers
SiTime MEMS Timing Solutions (A4) Chinese MEMS Timing Solution Brochures/Fliers
Building Robust Aerospace and Defense Products with Ruggedized Endura MEMS Oscillators White Papers