Abracon O-C25AA Precision Ultra Low Phase Noise OCXO

Introduction

The Abracon O-C25AA is a high-performance 10 MHz oven-controlled crystal oscillator (OCXO) designed for timing systems that require exceptional frequency accuracy and very low phase noise. Its compact footprint and precision SC-cut crystal make it suitable for demanding test, communications, and instrumentation applications.

Part Description

The O-C25AA is a 10 MHz precision OCXO with a sine-wave output. It uses an internally temperature-controlled oven to maintain stable crystal operation across changing ambient conditions.

Key characteristics include:

• Nominal frequency: 10 MHz
• Oscillator type: Oven-controlled crystal oscillator (OCXO)
• Crystal type: SC-cut crystal
• Output waveform: Sine wave
• Frequency stability: ±1 ppb over -40°C to +70°C
• Phase noise: Up to -162 dBc/Hz at a 100 kHz offset
• Package size: 25 mm × 25 mm
• Manufacturer: Abracon

The ultra-low phase-noise performance is especially valuable in systems where clock purity directly affects measurement resolution, signal quality, spectral performance, or synchronization accuracy.

Applications

Potential applications for the Abracon O-C25AA include:

• High-precision frequency references
• RF and microwave signal generators
• Phase-locked loop reference clocks
• Spectrum analyzers
• Network synchronization equipment
• Telecommunications timing systems
• Satellite communications equipment
• Frequency counters and measurement instruments
• Radar and electronic warfare systems
• Low-noise clock-generation systems
• Scientific laboratory equipment
• Time and frequency distribution systems

Industries

The O-C25AA may be used in a range of industries, including:

• Telecommunications
• Aerospace and defense
• Test and measurement
• Scientific research
• Satellite and space communications
• Industrial automation
• Broadcasting
• Navigation and positioning
• Instrumentation
• Wireless infrastructure

Usage Ideas

1. Low-Noise RF Reference Source
   Use the 10 MHz sine-wave output as the master reference for an RF synthesizer or signal generator requiring low close-in phase noise.

2. Precision Frequency Counter Reference
   Integrate the OCXO into a laboratory-grade frequency counter to improve long-term stability and measurement confidence.

3. Telecom Timing Module
   Build a synchronization module that distributes a stable 10 MHz reference clock to network, radio, or communications equipment.

Conclusion

The Abracon O-C25AA is a compact, precision 10 MHz OCXO built for applications where frequency stability and low phase noise are critical. With ±1 ppb stability across a wide temperature range and phase noise as low as -162 dBc/Hz at 100 kHz offset, it is a strong choice for advanced timing, RF, communications, and measurement designs.