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	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