The Endura™ ruggedized SiT5543 Super-TCXO® provides ±5 ppb stability over temperature, from -40°C to 95°C, delivering OCXO-level frequency stability without the use of custom-made, low g-sensitivity quartz OCXOs. The MEMS-based SiT5543 is ideal for PNT, aerospace-defense networking and communication systems. In a small 5 x 7 mm footprint and 2 mm high ceramic package, the SiT5543 is ideal for replacing bulky, less-robust, and power-consuming quartz OCXOs. The SiT5543 is 40% smaller, 100x more resilient, and up to 2x lower power.
This Super-TCXO is engineered for exceptional dynamic performance—offering the most stable timing in the presence of environmental stressors such as airflow, temperature perturbation, vibration, shock, and EMI. It delivers ±0.3 ppb/°C typ. frequency slope (dF/dT), 1.5e-11 ADEV at 10 second averaging time and 0.01 ppb/g acceleration sensitivity.
The SiT5543 is 100% screened through the SiTime Endura process flow to provide high reliability. It can be factory-programmed to a variety of configurations, eliminating the long lead time and customization costs of quartz products.
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| "Specs" | "Value" |
|---|---|
| Frequency | 1 to 60 MHz |
| Frequency Stability (ppm) | ±0.005 (±5 ppb) |
| Operating Temperature Range (°C) | -40 to 85 , -40 to 95 |
| Package Type (mm²) | 7.0 x 5.0 |
| Oscillator Type | TCXO-SE |
| Pull Range (ppm) | ±6.25 , ±10 , ±12.5 , ±25 , ±50 , ±80 , ±100 , ±125 , ±150 , ±200 , ±400 , ±600 , ±800 , ±1200 , ±1600 , ±3200 |
| Pin1 Feature | Output Enable , No Connect, software OE control |
| Voltage Supply (V) | 2.5 ±10% , 2.8 ±10% , 3.0 ±10% , 3.3 ±10% |
| Features | 0.01 ppb/g acceleration sensitivity, ±0.3 ppb/°C frequency slope, ±150 ppb 20-year aging, 1.5e-11 ADEV at 10 second averaging time, I2C digital control |
| Availability | Production |
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Image: Ceramic 10-pin 7050 package, top & bottom
Exceptional dynamic stability under airflow, fast temp. ramp
- ±5 ppb over-temp. stability from -40°C to 95°C
- ±0.3 ppb/°C frequency slope (ΔF/ΔT), 10°C/min ramp, ensures performance under fast temp. transients
- ±150 ppb 20-year aging, 16x better than quartz, eliminates in-factory calibration required with less stable devices
- 1.5e-11 ADEV at 10 second averaging time
40% smaller and 2x lower power than comparable OCXOs
- 110 mW typical power consumption (2.5V)
- Robust 7.0 mm x 5.0 mm ceramic package, insensitive to board bending stress, reducing PCB layout constraints
- Ideal for replacing larger power-hungry quartz OCXOs
Better acceleration sensitivity and 20x better phase noise under vibration
- 0.01 ppb/g g-sensitivity, per IAW MIL-PRF-55310 section 4.18.8.3.1
- Minimizes packet loss in high-vibration environments
No activity dips or microjumps
- Eliminates any need for costly screening or burn-in tests
0.2 ps/mV power supply noise rejection (PSNR)
-
Reduces BOM by eliminating a dedicated LDO for TCXO
LVCMOS or clipped sinewave output
- Optimize for best balance between EMI and jitter
Programmable features
- Any frequency between 1 to 60 MHz
- 2.25 to 3.63 V
- Wide pull range
Digital frequency tuning through I2C
- Digital control eliminates frequency shift caused by board noise
- No frequency-pull non-linearity, improves dynamic performance in closed-loop applications
- 5 ppt resolution minimizes time error in synch applications
- ±6.25 to ±3200 ppm range provides designers flexibility and optimal system performance
Superior reliability
- 2 billion hours MTBF
- 20x higher shock survivability
- Lifetime warranty
- Reduces field failures due to clock components and associated trouble shooting and repair costs
- Ruggedized Applications
- Defense & Aerospace
- Networking & Communication Systems
- Long-range Communications
- LEO SatCom
- Airborne Communications
- Field Communications
- Manpack Radios
- GPS / GNSS Modules
- Vehicle Communications
Frequency Slope (dF/dT) Calculator – Calculate frequency slope over temperature
Time Error Simulation Software – Simulate and analyze the impact of the local oscillator
TimeMaster Configuration Software – Configure and evaluate oscillators via I2C/SP
Reliability Calculator – Get FIT/MTBF data for various operating conditions
| Resource Name | Resource Type | Date | Format | Size |
|---|
Step 1: Enter or Configure SiT5543 Part Number
Step 2. Purchase
Quantity
| Qty: | Unit Price | Total |
|---|---|---|
| --- | --- | --- |
| Quantity | Unit Price | |
|---|---|---|
| 199 | --- | |
| 100-499 | --- | |
| 500-999 | --- | |
| 1,000-4,999 | --- | |
| > 4,999 | --- |