Tactical Manpack Radios

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
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
32.768 kHz TCXO SiT1580	±5	Time-keeping	32.768 kHz, ±5 ppm, 2.5 nsRMS IPJ, 1.2 mm2 CSP
Differential oscillators SiT9346 1 to 220 MHz SiT9347 220 to 725 MHz	±10 to ±50	FPGA & processor clocking	1 to 725 MHz, ±10 ppm, 0.23 ps RMS phase jitter

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

32.768 kHz TCXO

SiT1580

±5

Time-keeping

32.768 kHz, ±5 ppm, 2.5 nsRMS IPJ, 1.2 mm2 CSP

Differential oscillators

SiT9346 1 to 220 MHz

SiT9347 220 to 725 MHz

±10 to ±50

FPGA & processor clocking

1 to 725 MHz, ±10 ppm, 0.23 ps RMS phase jitter

Endura MEMS Timing Outperforms Quartz

Best Frequency Stability over Temperature	Best Aging
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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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Tactical Manpack Radios