Endura for Ruggedized Applications

Endura Timing Solutions for Aerospace and Defense – A Standout in Ruggedized Performance

4 parts per trillion per g force of acceleration – 50 times better than quartz

Supports -55ºC and +125ºC operation

Key timing specifications conform to MIL-PRF-55310

About The Endura Products

SiTime’s broad portfolio of commercial off-the-shelf (COTS) Endura products spans six oscillator types and 17 products. All devices offer programmable options such as frequency, operating voltage, and stability. In addition, some devices offer specialized programmable features such as spread spectrum, pull-range, and differential output type. Endura products are available with up to two grades of acceleration sensitivity, as low as 4 ppt/g (typical). This breadth of products provides customers with a large selection and the ability to configure each device for their application requirements.

Endura products are also designed for continuity of supply for long-life programs. For more information and datasheets, click on the part links below.

“When exposed to high levels of shock, vibration and extreme temperatures, legacy timing components have been prone to failure, degrading system performance and reliability,” said Piyush Sevalia, executive vice president of marketing. “To solve these problems, SiTime created an oscillator system of silicon MEMS, analog circuits, compensation algorithms and advanced packaging, which is designed to outperform any other available timing solution in harsh environments. For example, Endura precision TCXOs deliver 4 parts per trillion per g (ppt/g) of acceleration sensitivity, which is 50 times better than legacy quartz-based solutions. With such performance, we believe that Endura will transform the oscillator landscape in aerospace and defense.”



Benefits

• Accurate timing in extreme environments with better frequency stability over temperature, shock/vibration immunity, and high quality

• Any combination of frequency, stability, and voltage within a wide range ensures optimum operation for each application

• Minimal need for maintenance and calibration due to industry-leading aging and drift

Applications

• Command/Control

• Avionics & Drones

• Satellite/GNSS

• Field Communications

• Vehicle Comms/Telemetry

• Ruggedized Applications

Features

Highest robustness and reliability

• 0.004 ppb/g acceleration sensitivity

• 30,000g shock, 70g vibration resistance

• 1 billion hour MTBF, <1 FIT

• ±500 ppb 20 year aging

Exceptional dynamic stability under airflow

• ±0.9 ppb/°C frequency slope (ΔF/ΔT)

• 1.5e-11 ADEV at τ = 10 seconds, under still air and airflow

Maximum flexibility with factory programmable devices

• 1 to 725 MHz (any frequency)

• ±0.05 ppm to ±50 ppm over temp stability

• -55°C to 125°C maximum operating temperature range

• On-chip regulators eliminate the need for an external LDO

Integrated MEMS resonator, quartz free

• MEMS resonator encapsulated in silicon at 1100°C

• Resonator designed to never age or fatigue

• Ultra-low mass, immune to shock and vibration

Endura Super-TCXOs (temperature compensated oscillators) for use in high-speed communications and GNSS applications

• SiT5146/SiT5147 – 1 to 220 MHz, ±0.5 to ±2.5 ppm, -40°C to +105°C

• SiT5346/SiT5347 – 1 to 220 MHz, precision ±0.1 to ±0.25 ppm, -40°C to +105°C

• SiT5348/SiT5349 – 1 to 220 MHz, ultra-precision ±0.05 ppm

Endura single-ended oscillators for use in ruggedized applications

• SiT8944/SiT8945 – 1 to 137 MHz, -55°C to +125°C

• SiT2044/SiT2045 – 1 to 137 MHz, -55°C to +125°C, in SOT-23 package for easier manufacturing and solder-joint inspection

Endura spread spectrum oscillators to reduce EMI (electro-magnetic interference)

• SiT9045 – 1 to 150 MHz, spread spectrum, -55°C to +125°C

Endura differential oscillators for high-speed serial communications

• SiT9346/SiT9347 – 1 to 725 MHz, ultra-low jitter

Endura VCXOs (voltage controlled oscillators) for clock synchronization

• SiT3342/SiT3343 – 1 to 725 MHz, ultra-low jitter, ±15 to ±50 ppm

Endura DCXOs (digitally controlled oscillators) for noiseless clock synchronization

• SiT3541/SiT3542 – 1 to 725 MHz, ultra-low jitter, ±20 to ±50 ppm, I2C programmable
  

Comparison Table

Rev-1