Tactical Manpack Radios

Multiband Networking Manpack Radio

Reliable communication in the field is critical. Ruggedized timing solutions used in tactical radios must deliver ultra-high reliability and withstand harsh and dynamic environments, while at the same time offer low power consumption and small size. SiTime ruggedized Endura™ timing solutions are designed to endure tough battlefield conditions—such as shock, vibration, temperature perturbation, and noisy environments—in a small footprint.

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SiTime Ruggedized Endura MEMS Timing Benefits

Precision Timing

Best phase noise under vibration

±0.54 ppm 20-year aging

±100 ppb from -55°C to 105°C

3.5 ppb/°C dF/dT, no lock loss under dynamic conditions

Most Robust in Harsh Conditions

Best acceleration sensitivity, 0.004 ppb/g

30,000 g mechanical shock survivability

Exceeds MIL-STD-810H profile

Extended operating temp range

Higher Reliability

Conforms to MIL-PRF-55310

1,900M hours MTBF

Hermetically sealed

No cover or shielding needed

Tactical Manpack Radios Block Diagram

Endura MEMS Timing Solutions for Manpack Radios

Devices Frequency Stability Function Key Features
SiT5346  1 to 60 MHz
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SiT5347  60 to 220 MHz
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SiT5348  1 to 60 MHz
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SiT5349  60 to 220 MHz
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±0.1 to ±0.25

±0.1 to ±0.25



Reference clock for baseband 1 to 220 MHz, 0.004 ppb/g, ±100 ppb, ±1 ppb/°C
32.768 kHz TCXO
±5 Time-keeping 32.768 kHz, ±5 ppm, 2.5 nsRMS IPJ, 1.2 mm2 CSP
Differential oscillators
SiT9346  1 to 220 MHz
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SiT9347  220 to 725 MHz
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±10 to ±50 FPGA & processor clocking 1 to 725 MHz, ±10 ppm, 0.23 ps RMS phase jitter

Endura MEMS Timing Outperforms Quartz

Best Frequency Stability over Temperature

Best Aging

Endura – Best Frequency Stability over Temperature
Endura – Best Aging


Best Frequency Stability under Vibration

Best Phase Noise under Random Vibration

Endura – Best Frequency Stability under Vibration
Endura – Best Phase Noise under Random Vibration


Best Shock Survivability

Best Reliability

Endura – Best Shock Survivability
Endura – Best Reliability

Endura Timing Outperforms Quartz

SiTime   Quartz


Acceleration Sensitivity

MEMS Outperforms Quartz – Acceleration Sensitivity

Mechanical Shock

MEMS Outperforms Quartz – Mechanical Shock


MEMS Outperforms Quartz – Quality

Reliability MTBF (Million Hours)

MEMS Outperforms Quartz – Reliability MTBF (Million Hours)
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