GNSS Disciplined Systems

Global communication technology and telecommunication network around the planet

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.

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SiTime MEMS Timing Benefits

A leader in GNSS timing solutions

Navigation infrastructure

Financial transactions

Wireless network

Accurate and robust

Robust for mobile systems: 30,000g shock

Precision tuning: ±5 ppt resolution

Faster GNSS lock: ±40 ppt/°C dF/dT

Easy to use, built to last

Custom 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
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Filter wander from incoming GNSS, maintain signal lock ±5 ppb, ±40 ppt/°C, I2C Programmable
Precision OCXO
SiT5711  1 to 60 MHz
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Filter wander from incoming GNSS, maintain signal lock ±5 ppb, ±40 ppt/°C
Clock Generator
SiT95141  8 kHz to 2.1 GHz
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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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SiTime – Better Stability
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SiTime – Better Frequency Slope

 

Faster Warm Up

Better Vibration Resistance

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SiTime – Faster Warm Up
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SiTime – Better Vibration Resistance

 

Better Allan Deviation

Better Aging

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SiTime – Better Allan Deviation
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SiTime – Better Aging

Watch Video: Elite Super-TCXO Improves GNSS Robustness

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