1 to 60 MHz, ±50 ppb Super-TCXO

The SiT5358 is a ±50 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 SiT5358 delivers the most stable timing in the presence of environmental stressors – airflow, temperature perturbation, vibration, shock, and electromagnetic interference (EMI).

SiT5358 can be factory-programmed to any combination of frequency, 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

​​​​Six industry standard footprints as small as 5.0 x 3.2 mm
Frequency 1 to 60 MHz
Frequency Stability (ppm) ±0.05
Operating Temperature Range (°C) 0 to +70
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, 3.0, 3.3
Availability Sampling

Exceptional dynamic stability under airflow, fast temp. ramp

  • ±50 ppb over-temp. stability
  • 3e-11 ADEV at 10 second average time
  • ±1 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
  • 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

Narrow By:

Resource Name Type
AN10007 Clock Jitter Definitions and Measurement Methods Application Notes
Elite Super-TCXO Improves GNSS Robustness Videos
Elite Super-TCXO Improves Performance of IEEE 1588 Applications Videos
Elite Precision Super-TCXOs Solve Networking and Telecom Timing Issues Videos
SiT5358 Datasheet Datasheets
DualMEMS and TurboCompensation Temperature Sensing Technology Technology Papers
SC-AN10007 时钟抖动定义与测量方法 Application Notes
SC-AN10033 振荡器频率测量指南 Application Notes
SiTime MEMS First 工艺 Application Notes
SiTime MEMS First 工艺 Technology Papers
SiTime MEMS First 工艺 Application Notes
SiTime MEMS First 工艺 Technology Papers
SiTime MEMS First 工艺 Application Notes
SiTime MEMS First 工艺 Technology Papers
SiTime MEMS First 工艺 Application Notes
SiTime MEMS First 工艺 Technology Papers
2018 Timing Solutions for Communications-5G Product Selector Brochures
AN10062 Phase Noise Measurement Guide for Oscillators Application Notes
AN10063 TCXO and OCXO Stability Degradation Application Notes
Phase Noise Measurement Tutorial Videos
Phase Noise Measurement Tutorial (Download MP4 Video) Videos
Whack an Oscillator Demo (Download MP4 Video) Videos
Whack an Oscillator Demo Videos
PCI Express Refclk Jitter Compliance using a Phase Noise Analyzer Presentations
Elite Super-TCXO Improves GNSS Robustness (Download MP4 Video) Videos
Elite Super-TCXO Improves Performance of IEEE 1588 Applications (Download MP4 Video) Videos
Elite Precision Super-TCXOs Solve Networking and Telecom Timing Issues (Download MP4 Video) Videos
Network Evolution 5G - Timing and Synchronization (Download MP4 Video) Videos
Network Evolution 5G - Timing and Synchronization Videos
Ceramic 5032 10-Pins 3D Step Models
Adaptive Drift Compensation for Holdover Oscillators White Papers
Time Error Simulation - Software and Models White Papers