The Endura™ SiT9045 spread spectrum oscillator is engineered for harsh environments and is ideal for high-reliability aerospace and defense applications. This MEMS-based SSXO has ultra-low acceleration sensitivity at 0.1 ppb/g and high temp operation up to 125°C.
This device reduces EMI (up to 30 dB) by offering two techniques: spread spectrum clocking and rise/fall time adjustment of the clock signal, ensuring emissions compliance with maximum flexibility and minimum engineering effort. The SiT9045 is available in three industry-standard packages to replace quartz products without any board design changes.
The SiT9045 is 100% screened through the SiTime Endura™ process flow to provide high reliability.
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| "眼镜" | "值" |
|---|---|
| Frequency | 1 to 150 MHz |
| Frequency Stability (ppm) | ±20, ±25, ±50 |
| Operating Temperature Range (°C) | -55 to +125 |
| Package Type (mm²) | 2.0x1.6, 2.5x2.0, 3.2x2.5 |
| Oscillator Type | SSXO-SE |
| Spread Percentage (%) | Center: ±0.125 to ±2.000, Down: -0.25 to -4.00 |
| FlexEdgeTM Rise/Fall Time | Yes |
| Voltage Supply (V) | 1.8, 2.25 to 3.3 |
| Features | Ultra-low acceleration sensitivity, MIL-STD-55310, MIL-PRF-883, AEC-Q100 |
| Availability | Production |
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Image: SiT9045 4-pin package, top & bottom
Low acceleration sensitivity
- As low as 0.1 ppb/g
Spread spectrum clocking
- Up to 30 dB electromagnetic interference (EMI) reduction
- Up to 134 times better electromagnetic susceptibility (EMS) than an external resonator plus an SSIC solution
- Solves EMI problem and improves reliability in noisy environments
Flexible EMI reduction options
- Wide spread range: center spread up to ±2.0%, down spread down to -4.0%
- Configurable rise/fall time: 8 options
- Configurable spread profile: triangular, Hershey kiss, or random
Three industry-standard packages
- 100% drop-in replacement of quartz XO
- Enables EMI reduction without board redesign, metal housing, or other expensive EMI reduction method
Low cycle-to-cycle jitter: 8.5 ps
- Minimize impact to system timing budget
Extensive programmability
- Any frequency from 1 to 150 MHz with 6 decimal-place accuracy
- Supply voltage of 1.8 V; 2.5 to 3.3 V
- Frequency stability from ±20 ppm to ±50 ppm
- Airborne Communications
- Field Communications
- Vehicle Communications
- Avionics
- Ruggedized Applications
Reliability Calculator – Get FIT/MTBF data for various operating conditions
Frequency Slope (dF/dT) Calculator – Calculate frequency slope over temperature
2016 4-Pins | 2520 4-Pins | 3225 4-Pins – Preview packages with QFN 3D step models
| Resource Name | Resource Type | Date | Format | Size |
|---|
Step 1: Enter or Configure SiT9045 Part Number
Step 2. Purchase
Quantity
| Qty: | Unit Price | Total |
|---|---|---|
| --- | --- | --- |
| Quantity | Unit Price | |
|---|---|---|
| 199 | --- | |
| 100-499 | --- | |
| 500-999 | --- | |
| 1,000-4,999 | --- | |
| > 4,999 | --- |