ES Components | A Franchised Distributor and Manufacturer
SiTimeBanner4-4-19.JPG

SiTime Endura for Aerospace and Defense

Precision
Based Timing Solutions

SiTimeGray.JPG
 
Endura-PR-image-1600x900-300dpi.png

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

MEMS Outperforms Quartz.jpg
Packaging.jpg

“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.”

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.

Endura Super-TCXOs Ruggedized Performance

Frequency Slope vs Temp.jpg
Frequency Stability.jpg
 

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

Endura VCXOs (voltage controlled oscillators) for clock synchronization

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

Device Type Device Frequency Temp. Range (°C) Stability (ppm) Output Type Package Size (mm)
Super-TCXOs SiT5146, SiT5147 1 to 220 MHz -40 to 105
-40 to 105
0 to 70
±0.5 to ±2.5
±0.1 to ±0.25
±0.05
LVCMOS
Clipped Sine Wave
5.0 x 3.2
SiT5346, SiT5347
SiT5348, SiT5349
Differential Oscillators SiT9346, SiT9347 1 to 725 MHz -20 to 70
-40 to 85
-40 to 95
-40 to 105
±10 to ± 50 LVPECL LVDS HCSL 3.2 x 2.5
5.0 x 3.2
7.0 x 5.2
            2.0 x 1.6
Single Ended Oscillators SiT8944, SiT8945 1 to 137 MHz -40 to 85
-40 to 105
-40 to 125
-55 to 125
±20 to ±50 LVCMOS 2.5 x 2.0
3.2 x 2.5
5.0 x 3.2
7.0 x 5.0
SiT2044, SiT2045 SOT23-5
Spread Spectrum Oscillators SiT9045 1 to 150 MHz -40 to 85
-40 to 105
-40 to 125
-55 to 125
±50 LVCMOS 2.0 x 1.6
2.5 x 2.0
3.2 x 2.5
VCXOs SiT3342, SiT3343 1 to 725 MHz -20 to 70
-40 to 85
-40 to 95
-40 to 105
±15 to ±50 LVPECL LVDS HCSL 3.2 x 2.5
5.0 x 3.2
7.0 x 5.2
DCXOs SiT3541, SiT3542 1 to 725 MHz -20 to 70
-40 to 85
±10 to ±50 LVPECL
LVDS HCSL
5.0 x 3.2

Availability


Samples of Endura products are available now. Production quantities will be available in Q4 2019. Pricing is provided upon request.

ES Components can 100% up-screen or sample test SiTime’s products in accordance with MIL-PRF-55310 requirements and MIL-STD-883 methods.

The Endura product line supports single lot date codes.


Endura Product Brief