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 0.009 ppb/g and wide temp operation from -55°C to +105°C. This device is engineered for systems operating in extremely cold and 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.
View related products: 60 to 220 MHz | ±100 ppb | ±50 ppb | Ruggedized TCXO lineup
| Oscillator Type | TCXO-SE |
| Frequency | 1 to 60 MHz |
| Frequency Stability (ppm) | ±0.5, ±1, ±2.5 |
| Phase Jitter (rms) | 0.31 ps |
| Output Type | LVCMOS, Clipped Sinewave |
| Operating Temperature Range (°C) | -20 to +70, -40 to +85, -40 to +105, -55 to +105 |
| Pull Range (ppm) | ±6.25, ±10, ±12.5, ±25, ±50, ±80, ±100, ±125, ±150, ±200, ±400, ±600, ±800, ±1600, ±3200 |
| Voltage Supply (V) | 2.5, 2.8, 3, 3.3 |
| Package Type (mm²) | 5.0 x 3.2 10-pin |
| Features | Ultra-low acceleration sensitivity, MIL-STD-55310, MIL-PRF-883 |
| Availability | Production |
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Small 5.0 x 3.2 mm package, plus industry standard TCXO footprint options
Rugged performance under airflow, fast temp. ramp, extreme temperatures
- ±0.5 ppm over-temp stability, from -55°C 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 0.009 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 Products | Other Quality Documents |
| SiTime Conflict Minerals Policy | Other Quality Documents |
| SiTime Environmental Policy | Other Quality Documents |
| SiTime Warranty on Date Code | Other Quality Documents |
| Conflict Minerals Reporting Template | Other Quality Documents |
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