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
Image	Image

Best Frequency Stability under Vibration	Best Phase Noise under Random Vibration
Image	Image

Best Shock Survivability	Best Reliability
Image	Image

Endura Timing Outperforms Quartz

▀ SiTime ▀ Quartz

Acceleration Sensitivity

Mechanical Shock

Quality

Reliability MTBF (Million Hours)

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Tactical Manpack Radios