1 to 60 MHz, ±0.5 to ±2.5 ppm Super-TCXO
The SiT5146 is a ruggedized ±0.5 to ±2.5 ppm Endura™ 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 SiT5146 delivers 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 SiT5146 conforms to MIL-PRF-55310 and MIL-STD-883 specifications.
Looking for other Endura Super-TCXOs? 60 to 220 MHz | ±100 ppb | ±50 ppb
| Oscillator Type | TCXO-SE |
| Frequency | 1 to 60 MHz |
| Frequency Stability (ppm) | ±0.5, ±1, ±2.5 |
| 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 |
| Availability | Sampling |
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Small 5.0 x 3.2 mm package
Rugged performance under airflow, fast temp. ramp
- ±0.5 ppm over-temp stability, up to 105°C
- 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 loss of satellite lock in high-vibration environments
0.2 ps/mV power supply noise rejection (PSNR)
- Reduces BOM by eliminating a dedicated LDO for the TCXO
LVCMOS or Clipped sinewave output
- Optimize for best balance between EMI and jitter
Rich programmable features
- Any frequency between 1 to 60 MHz
- ±0.5 ppm, ±1 ppm, ±2.5 ppm
- 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
- 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
| 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 |
| 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 |
| 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 |
| SiT5146 Datasheet | Datasheets |