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™ temperature sensing and TurboCompensation™ 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
Oscillator Type TCXO-SE
Frequency 1 to 60 MHz
Frequency Stability (ppm) ±0.05
Operating Temperature Range (°C) 0 to +70
Output type LVCMOS, Clipped sinewave
Package Type (mm²) 5.0 x 3.2 10-pin
Phase Jitter (RMS) 0.31 ps
Features Precision TCXO
Voltage Supply (V) 2.5, 2.8, 3.0, 3.3
Pull Range (ppm) ±6.25, ±10, ±12.5, ±25, ±50, ±80, ±100, ±125, ±150, ±200, ±400, ±600, ±800, ±1600, ±3200
Availability Sampling

Exceptional dynamic stability under airflow, fast temp. ramp

  • ±50 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
  • 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
  • 核心与企业
  • 无线与回程
  • 光纤、有线与 DSL
  • 高精度GNSS
  • 雷达与激光雷达
  • GPS/GNSS Modules
  • 电源与能源
  • 国防与航空航天
  • 铁路
  • 远程通信
  • 资产跟踪
  • 室内定位
  • 智能农场
  • 智能城市

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Electronics Industry Citizen Coalition Template Other Quality Documents
Electronics Industry Citizen Coalition Template Other Quality Documents
Manufacturing Notes for SiTime Oscillators Other Quality Documents
SiTime Conflict Metal Declaration Other Quality Documents
SiTime Conflict Metal Declaration Other Quality Documents
SiTime Environmental Policy Other Quality Documents
SiTime Environmental Policy Other Quality Documents
SiTime Warranty on Date Code (16.72 kB) 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
Conflict Minerals Reporting Template Other Quality Documents

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Resource Name Type
AN10002 Termination Recommendations for Single-ended Oscillator Driving Single or Multiple Loads Application Notes
AN10002 Termination Recommendations for Single-ended Oscillator Driving Single or Multiple Loads Application Notes
AN10006 Best Design and Layout Practices Application Notes
AN10006 Best Design and Layout Practices Application Notes
AN10007 Clock Jitter Definitions and Measurement Methods Application Notes
AN10007 Clock Jitter Definitions and Measurement Methods Application Notes
AN10025 Reliability Calculations for SiTime Oscillators Application Notes
AN10025 Reliability Calculations for SiTime Oscillators Application Notes
AN10028 Probing Oscillator Output Application Notes
AN10028 Probing Oscillator Output Application Notes
AN10033 Frequency Measurement Guidelines for Oscillators Application Notes
AN10033 Frequency Measurement Guidelines for Oscillators Application Notes
AN10039 TCXO Frequency Stability and Frequency Accuracy Budget Application Notes
AN10039 TCXO Frequency Stability and Frequency Accuracy Budget Application Notes
SiTime's MEMS First™ and EpiSeal™ Processes Technology Papers
SiTime's MEMS First™ and EpiSeal™ Processes Technology Papers
SiT5358 Datasheet Datasheets
DualMEMS and TurboCompensation Temperature Sensing Technology Technology Papers
DualMEMS and TurboCompensation Temperature Sensing Technology Technology Papers
SC-AN10007 时钟抖动定义与测量方法 Application Notes
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
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
SiTime MEMS First 工艺 Application Notes
SiTime MEMS First 工艺
SiTime MEMS First 工艺 Application Notes
SiTime MEMS First 工艺
2018 Timing Solutions for Communications-5G Product Selector Brochures
AN10062 Phase Noise Measurement Guide for Oscillators Application Notes
AN10062 Phase Noise Measurement Guide for Oscillators Application Notes
AN10063 TCXO and OCXO Stability Degradation Application Notes
AN10063 TCXO and OCXO Stability Degradation Application Notes
Phase Noise Measurement Tutorial Videos
Phase Noise Measurement Tutorial Videos
Phase Noise Measurement Tutorial (Download MP4 Video) Videos
Phase Noise Measurement Tutorial (Download MP4 Video) Videos
Whack an Oscillator Demo (Download MP4 Video) Videos
Whack an Oscillator Demo (Download MP4 Video) Videos
Whack an Oscillator Demo Videos
Whack an Oscillator Demo Videos
PCI Express Refclk Jitter Compliance using a Phase Noise Analyzer Presentations
PCI Express Refclk Jitter Compliance using a Phase Noise Analyzer Presentations
AN10064 Improved System Performance with Digital Frequency Tuning in Precision Super-TCXOs Application Notes
AN10064 Improved System Performance with Digital Frequency Tuning in Precision Super-TCXOs Application Notes
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
Ceramic 5032 10-Pins 3D Step Models
Adaptive Drift Compensation for Holdover Oscillators White Papers
Time Error Simulation - Software and Models White Papers