Land Defense Vehicle Communications

Soldier communicates with a radio mounted in an armored HMMWV

Operational effectiveness is reliant on the rapid exchange of information. And vehicle communication equipment relies on ruggedized timing components that can survive the toughest operating conditions. These timing solutions must survive shock, vibration, and dynamic temperatures, while offering low power consumption and small size.

SiTime ruggedized Endura™ timing solutions are built to operate in harsh environments, overcoming the inherent weaknesses of quartz and delivering low failure rates, long-term reliability, and robust performance.

Download Application Brief

SiTime Ruggedized Endura MEMS Timing Benefits

Precision Timing

20x better mechanical shock survivability

±100 ppb up to 105°C

Digital tuning to ±5 ppt

Most Robust in Harsh Conditions

4x better vibration resistance

4x better dF/dT, airflow and heat resistant

Extended operating temperature range

Higher Reliability

Conforms to MIL-PRF-55310

No quartz reliability issues

No cover or shielding

Land Defense Vehicle Communications Block Diagram

Endura MEMS Timing for Land Vehicle Communications

Devices	Frequency Stability	Function	Key Features
Super-TCXOs SiT5346 1 to 60 MHz SiT5347 60 to 220 MHz SiT5348 1 to 60 MHz SiT5349 60 to 220 MHz	±0.1 to ±0.25 ±0.1 to ±0.25 ±0.05 ±0.05	Reference clock for baseband	1 to 220 MHz, 0.004 ppb/g, ±100 ppb, ±1 ppb/°C
Differential oscillators SiT9346 1 to 220 MHz SiT9347 220 to 725 MHz	±10 to ±50	FPGA & processor clocking	1 to 725 MHz, ±10 ppm, 0.1 ps RMS phase jitter
Single ended oscillators SiT8944 1 to 110 MHz SiT8945 115 to 137 MHz SiT2044 1 to 110 MHz SiT2045 115 to 137 MHz	±20 to ±50	FPGA & processor clocking	1 to 137 MHz, ±20 ppm, -55°C to 125°C

Devices

Frequency Stability

Function

Key Features

Super-TCXOs

SiT5346 1 to 60 MHz

SiT5347 60 to 220 MHz

SiT5348 1 to 60 MHz

SiT5349 60 to 220 MHz

±0.1 to ±0.25

±0.05

Reference clock for baseband

1 to 220 MHz, 0.004 ppb/g, ±100 ppb, ±1 ppb/°C

Differential oscillators

SiT9346 1 to 220 MHz

SiT9347 220 to 725 MHz

±10 to ±50

FPGA & processor clocking

1 to 725 MHz, ±10 ppm, 0.1 ps RMS phase jitter

Single ended oscillators

SiT8944 1 to 110 MHz

SiT8945 115 to 137 MHz

SiT2044 1 to 110 MHz

SiT2045 115 to 137 MHz

±20 to ±50

FPGA & processor clocking

1 to 137 MHz, ±20 ppm, -55°C to 125°C

Endura MEMS Timing Outperforms Quartz

Best Frequency Stability over Temperature	Best Aging
Image	Image

Best Frequency Stability under Vibration	Best Phase Noise under Random Vibration
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Best Shock Survivability	Best Reliability
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Endura Timing Outperforms Quartz

▀ SiTime ▀ Quartz

Acceleration Sensitivity

Mechanical Shock

Quality

Reliability MTBF (Million Hours)

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Land Defense Vehicle Communications