GNSS Disciplined Systems
Precision timing is at the heart of GNSS disciplined systems. With our increasingly connected world, a consistent GNSS signal is more critical than ever. SiTime offers highly reliable and ultra-robust MEMS timing solutions that manage the incoming GNSS signal and filter wander to maintain signal lock. If the satellite signal is obstructed or not available, SiTime’s precision devices can keep the system running until the reference is restored.
SiTime MEMS Timing Benefits
A leader in GNSS timing solutionsNavigation infrastructure Financial transactions Wireless network |
Accurate and robustRobust for mobile systems: 30,000g shock Precision tuning: ±5 ppt resolution Faster GNSS lock: ±40 ppt/°C dF/dT |
Easy to use, built to lastCustom configured solution No quartz reliability issues 1 billion hour MTBF |
GNSS Disciplined Systems Block Diagram
MEMS Timing for GNSS Disciplined Systems
| Devices | Function | Features |
|---|---|---|
|
Super-TCXO
SiT515x 1 to 220 MHz
|
Filter wander from incoming GNSS, maintain signal lock | ±0.5 to ±2.5 ppm , ±15 ppb/°C, 70g vibration survivability |
|
Super-TCXO
SiT535x 1 to 220 MHz
|
Filter wander from incoming GNSS, maintain signal lock | ±50 to ±250 ppb , ±1 ppb/°C, 70g vibration survivability |
|
Digitally Controlled OCXO
SiT5721 1 to 60 MHz
|
Filter wander from incoming GNSS, maintain signal lock | ±5 ppb, ±40 ppt/°C, I2C Programmable |
|
Precision OCXO
SiT5711 1 to 60 MHz
|
Filter wander from incoming GNSS, maintain signal lock | ±5 ppb, ±40 ppt/°C |
|
Clock Generator
SiT95141 8 kHz to 2.1 GHz
 |
Clock management and facilitate feedback loop | 4 input and 10 output, 4 PLL |
MEMS Timing Outperforms Quartz
Better Stability |
Better Frequency Slope |
|---|---|
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Faster Warm Up |
Better Vibration Resistance |
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Better Allan Deviation |
Better Aging |
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Watch Video: Elite Super-TCXO Improves GNSS Robustness
Featured Resources
- Timing Solutions for Industrial
- AN10063 TCXO and OCXO Stability and System Impact Beyond Rated Temperature
- AN10064 Improved System Performance with Digital Frequency Tuning in Precision Super-TCXOs
- AN20003 SiT9514x Power Supply Noise Rejection
- AN20011 SiT9514x Dynamic Control of Outputs
- Elite Platform MEMS Super-TCXOs and Oscillators FAQs
- Cascade MEMS Clocks FAQs
- Resilience and Reliability of Silicon MEMS Oscillators
- Video: How to Design with SiTime TCXOs and OCXOs
- See full list of related applications notes
