1 to 150 MHz, Spread-spectrum, Extended Temperature (-55°C to 125 °C)
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/gand 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 conforms to MIL-PRF-55310, MIL-STD-883, and AEC-Q100 specifications.
| Oscillator Type | SSXO-SE |
| Frequency | 1 to 150 MHz |
| Frequency Stability (ppm) | ±20, ±25, ±50 |
| Output Type | LVCMOS |
| Operating Temperature Range (°C) | -55 to +125 |
| Spread Percentage (%) | Center: ±0.125 to ±2.000, Down: -0.25 to -4.00 |
| FlexEdgeTMRise/Fall Time | Yes |
| Voltage Supply (V) | 1.8, 2.25 to 3.3 |
| ²包类型(毫米) | 2.0x1.6, 2.5x2.0, 3.2x2.5 |
| Features | Ultra-low acceleration sensitivity, MIL-STD-55310, MIL-PRF-883, AEC-Q100 |
| Availability | Production |
Industry standard packages for EMI reduction and drop-in replacement of quartz oscillators without any board changes
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
- 汽车通讯/遥测
- Avionics
- All ruggedized applications
| Document Name | Type |
|---|---|
| Electronics Industry Citizen Coalition Template | Other Quality Documents |
| Manufacturing Notes for SiTime Products | Other Quality Documents |
| 坐ime Conflict Metal Declaration | Other Quality Documents |
| 坐ime Environmental Policy | Other Quality Documents |
| 坐ime Warranty on Date Code (16.72 kB) | Other Quality Documents |
| Conflict Minerals Reporting Template | Other Quality Documents |
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 withQFN3D step models
| Resource Name | Type |
|---|---|
| AN10002 Termination Recommendations for Single-ended Oscillator Driving Single or Multiple Loads | Application Notes |
| AN10006 Best Design and Layout Practices | Application Notes |
| AN10025 Reliability Calculations for SiTime Oscillators | Application Notes |
| AN10028 Probing Oscillator Output | Application Notes |
| AN10033 Frequency Measurement Guidelines for Oscillators | Application Notes |
| 坐ime's MEMS First™ and EpiSeal™ Processes | Technology Papers |
| AN10005 Spread Spectrum Clock Oscillators | Application Notes |
| SC-AN10033 振荡器频率测量指南 | Application Notes |
| MEMS Timing for High Reliability Applications | Product Briefs |
| QFN 2016 4-Pins | 3D Step Models |
| QFN 2520 4-Pins | 3D Step Models |
| QFN 3225 4-Pins | 3D Step Models |
| 坐9045 Datasheet | Datasheets |
| Timing Solutions for Aerospace & Defense | Brochures/Fliers |
| Building Robust Aerospace and Defense Products with Ruggedized Endura MEMS Oscillators | White Papers |
| 坐ime MEMS First 工艺 | Technology Papers |