9940

The 9940 series utilizes 3rd or 5th overtone AT cut crystals in a Colpitts configuration with optional multiplication circuitry and output amplifier or driver stages. The precision crystals are contained within hermetic or vacuum sealed packages housed within the hybrid circuit package resulting in the lowest end of life frequency drift possible. Output frequency, output waveform, and package style can be chosen to meet a wide variety of standard and custom applications.

Mil Spec Manufacturing
The 9940 series designs are based on Symmetricom's 35-year heritage of design and manufacturing techniquesproven for reliability in numerous space applications. The hybrids are manufactured in a MIL-PRF-38534C class K facility in a class 100,000 clean room that ensure maximum reliability.

Ruggedized High Performance
The 9940 series has demonstrated excellent performance after exposure to high levels of shock, vibration and radiation consistent with the rigorous requirements of space applications.

• 10 MHz to 1.2 GHz Output Frequency
• MIL-PRF-38534C Class H or K Certified
• Sine Wave or PECL Outputs
• Low Aging and Phase Noise
• Radiation Hardened
• Environmentally Robust

The 9940 is designed for space applications including:

• Satellite Transmission
• Satellite Time and Frequency control
• Satellite Tracking and Guidance

Data Sheets
9920 & 9940: Hybrid Space Qualified XO and VCXO (PDF)