Tactical Communications

Soldiers are Using Laptop Computer for Surveillance During Military Operation in the Desert

Precision timing enables military tactical communication systems to align data streams, modulate signals correctly, minimize transmission errors, and ensure seamless and efficient data flow. Achieving high data rate is particularly challenging in rough environments where vibrations can wreak havoc on frequency stability resulting in increased error rate, loss of signal or worse, inability to connect. Endura Super-TCXO® overcome these challenges with excellent performance under shock and vibration.

Download Application Brief

SiTime Endura Ruggedized Timing Benefits

Robust in Harsh Conditions

< ±1E-9 OCXO stability over -40 to 95°C

Low vibration sensitivity <1E-11/g

High shock survivability >30,000

Better Performance

<1 µsec time error after 24-hr holdover

<5E-12 ADEV from 1 to 1000 s

<170 dBc/Hz low phase noise

Ease of Design

Low SWAP solutions

Low sensitivity to noise

Easy to integrate into plug-in cards

Precision Timing in Military Tactical Communications

Endura Ruggedized Super-TCXOs deliver the robustness and reliability of silicon MEMS timing for RF systems. In addition to ultra-low g-sensitivity. The Super-TCXO phase noise is virtually insensitive to vibration. With frequency stability across temperature as low +5 ppb, the SiT5543 Super-TCXO can replace a quartz OCXO for time synchronization, reducing power consumption by 50% and size by 95%.

Typical Block Diagram

Military tactical communications block diagram

MEMS Timing Solutions for Military Tactical Communications

Devices	Better Performance	Key Features
Ultra-low Stability Super-TCXOs SiT5543 1 to 60 MHz SiT5541 1 to 60 MHz	Stability over temperature: ±5E-9, ±10E-9, ±20E-9 g-sensitivity: 1E-11/g total gamma Allan deviation: 1.5E-11, 1 s to 10 s 20-year aging; 150 ppb	Temperature range: -40°C to 95°C, -40°C to 105°C Package (mm): 7.0 x 5.0 CER Voltage control or I2C frequency pull option LVCMOS or Clipped Sine 2.5 V, 3.3 V supply voltage
Low Phase Noise Super-TCXOs SiT7201 10 to 60 MHz SiT7202 60 to 220 MHz	Stability over temperature: ±100 ppb to ±250 ppb g-sensitivity: 0.01 ppb/g total gamma Low phase noise fc=10 MHz: -91 dBc/Hz (1 Hz), -152 dBc/Hz (1 kHz), -175 dBc/Hz (100 kHz) Allan deviation: 1E-11, 1 s to 10 s	Temperature range: -40°C to 105°C Package (mm): 5.0 x 3.5 CER I2C and SPI frequency pull option LVCMOS or Clipped Sine 1.8 V, 2.5 V, 3.3 V supply voltage
Super-TCXOs SiT5348 1 to 60 MHz SiT5349 60 to 220 MHz SiT5346 1 to 60 MHz SiT5347 60 to 220 MHz	Stability over temperature: ±50 ppb to ±250 ppb g-sensitivity: 0.009 ppb/g total gamma Allan deviation: 1.5 E-11, 1s to 10s No frequency jumps Predictable, part-to-part repeatable performance	Temperature range: -40°C to 105°C Package (mm): 5.0 x 3.2 CER Voltage control or I2C frequency pull option LVCMOS or Clipped Sine 2.5 V, 3.3 V supply voltage
32 kHz TCXO SiT7910 32 kHz	Stability over temperature: ±100 ppb to ±400 ppb Low g-sensitivity	Temperature range: -55°C to 105°C Package (mm): 2.5 x 2.0 CER 1.8 V to 3.3 V supply voltage
Low Jitter Differential Oscillators SiT9551 25 to 644 select frequencies SiT9356 1 to 220 MHz SiT9357 220 to 920 MHz	Stability over temperature: ±20 ppm to ±50 ppm g-sensitivity: 0.04 ppb/g total gamma Phase jitter: 70 fs RMS, 12kHz to 20 MHz PSNR: 9 fs/mV	Temperature range: -55°C to 125°C Package (mm): 2.0 x 1.6, 2.5 x 2.0, 3.2 x 2.5 QFN LVPECL, LVDS, HCSL, Low-power HCSL and FlexSwing™ signaling options Supply voltage: 1.8V, 2.5V, 3.3V
Low g-sensitivity Oscillator SiT8944 1 to 137 MHz SiT8945 1 to 137 MHz	Stability over temperature: ±10 ppm to ±50 ppm g-sensitivity: 0.1 ppb/g Phase jitter: < 0.5 ps RMS	Temperature range: -55°C to 125°C Package (mm): 2.0 x 1.6, 2.5 x 2.0, 3.2 x 2.5, 5.0 x 3.2, 7.0 x 5.0 QFN LVCMOS or LVTTL output Programmable drive strength

SiTime Endura Timing Solutions

Endura products are factory programmed to customer-specific configurations, eliminating the long lead times and customization costs associated with quartz products. All Endura oscillators are 100% screened through the SiTime Endura process flow to guarantee performance at off-the-shelf pricing and are warrantied for aerospace and defense applications.