XO3225-125M
125MHz low-jitter crystal oscillator in 3.2x2.5mm package with ±25ppm stability for Gigabit Ethernet and high-speed...
Product Overview
Description
The XO3225-125M is a high-performance 125MHz crystal oscillator specifically designed for Gigabit Ethernet and high-speed communication applications.
Featuring low phase jitter (<1ps RMS), ±25ppm stability, and 3.3V CMOS output, this oscillator meets the stringent timing requirements of Gigabit Ethernet PHYs and SERDES applications.
The 3.2x2.5mm ceramic package provides excellent reliability while maintaining compact size for high-density designs.
Product Series
XO
Primary Application
Gigabit Ethernet PHY clocking
Key Features
- 125MHz frequency for Gigabit Ethernet applications
- Low phase jitter <1ps RMS (12kHz-20MHz)
- Industrial temperature range -40°C to +85°C
- 3.3V CMOS output with fast rise/fall times
- Excellent frequency stability ±25ppm
- Compact 3.2x2.5mm ceramic package
- RoHS compliant and Pb-free
Specifications
| Frequency | 125MHz |
|---|---|
| Stability | ±25ppm |
| Jitter | <1ps RMS |
| Voltage | 3.3V ±10% |
| Package | 3.2x2.5mm SMD |
| Temperature | -40°C to +85°C |
Applications
Gigabit Ethernet PHY clocking
Communication and interface
Fiber optic transceivers
Electronic system design
High-speed SERDES
Electronic system design
FPGA and processor clocks
Electronic system design
FAE Expert Insights
"The XO3225-125M is my go-to recommendation for Gigabit Ethernet applications. The <1ps jitter specification meets IEEE 802.3 requirements for 1000BASE-T, and I've successfully used it in numerous switch and router designs. The industrial temperature range is valuable for networking equipment that may operate in uncontrolled environments. What sets this part apart is the consistent jitter performance across temperature - some competitors show significant jitter degradation at temperature extremes. The 3.2x2.5mm package is compatible with most Gigabit PHY reference designs. For customers designing enterprise networking equipment, this oscillator provides the right balance of performance, reliability, and cost."
Low jitter and wide temperature range ideal for Gigabit Ethernet applications.
— Michael Zhang, BeiLuo
Frequently Asked Questions
What jitter specification is required for Gigabit Ethernet?
Gigabit Ethernet (1000BASE-T) requires specific jitter performance to ensure reliable data transmission. The IEEE 802.3 standard specifies maximum peak-to-peak jitter of 1.4ns at the transmitter. For the reference clock, typical requirements are <1ps RMS phase jitter (integrated 12kHz-20MHz). The XO3225-125M with <1ps RMS jitter meets these requirements with margin. Some Gigabit PHYs have more stringent requirements, especially for SGMII or RGMII interfaces. Always check your specific PHY datasheet for exact clock requirements. Dapu can provide phase noise plots and jitter measurements for qualification. For 10 Gigabit Ethernet, even lower jitter (<0.5ps) is typically required.
XO3225-125M meets standard Gigabit Ethernet requirements. Verify specific PHY datasheet for exact specs.
Can the XO3225-125M be used for other frequencies?
The XO3225-125M is factory-programmed to 125MHz and cannot be changed in the field. However, Dapu offers the same oscillator series in various standard frequencies including 100MHz, 106.25MHz, 125MHz, 156.25MHz, and 200MHz for different applications. Custom frequencies can be programmed at the factory for volume orders. If you need multiple frequencies in your design, consider using a programmable clock generator or oscillator with multiple output options. The XO3225 series uses the same package and pinout across frequencies, allowing for easy substitution during design changes. Contact us for the complete frequency availability list.
Select exact frequency needed. Custom frequencies available for volume orders.
What is the recommended soldering profile for XO3225-125M?
Standard reflow soldering profile per JEDEC J-STD-020 is recommended. Peak temperature should not exceed 260°C for Pb-free solder. Preheat at 150-180°C for 60-90 seconds. Soak at 217°C for 60-90 seconds. Peak at 245-260°C for 20-40 seconds. Allow adequate cooling time. Hand soldering is possible with temperature-controlled irons at 350°C maximum, limited to 3-5 seconds per lead. Avoid thermal shock by not exceeding 4°C/second heating/cooling rates. Washable flux can be used but thorough cleaning is recommended. Follow IPC-A-610 for acceptance criteria.
Use standard Pb-free reflow profile. Contact us for specific soldering recommendations.
What is the MTBF of XO3225-125M?
The XO3225-125M has an MTBF (Mean Time Between Failures) of >100 million hours at 25°C operating temperature, calculated per Telcordia SR-332. This corresponds to a FIT rate of <10 failures per billion device-hours. Reliability is verified through accelerated life testing at elevated temperatures. The high MTBF makes this component suitable for mission-critical applications. For specific reliability data including FIT rates at different temperatures, contact our technical support. Burn-in screening is available for high-reliability applications.
Suitable for high-reliability applications. Contact us for detailed reliability reports.
What is the ESD sensitivity rating of XO3225-125M?
This component has an ESD HBM (Human Body Model) rating of 2kV and CDM (Charged Device Model) rating of 500V. While this provides reasonable protection, standard ESD precautions should always be followed during handling and assembly. Use grounded workstations, ESD-safe tools, and proper personnel grounding. Avoid touching pins directly. Store components in ESD-safe packaging until ready for use. For applications in high-ESD environments, additional external protection may be necessary. Contact our FAE team for ESD design recommendations.
Use standard ESD precautions. Contact us for high-ESD environment recommendations.