090-44310-22

Overview

The Microsemi Corporation 090-44310-22 is a Rubidium atomic clock oscillator module designed for high-stability frequency generation. It operates at a nominal frequency of 10 MHz and utilizes CMOS output logic levels. The device requires an operating supply voltage of 5V and draws a typical operating supply current of 2.8 A. It is engineered to function within a temperature range of -10°C to +75°C and supports through-hole mounting configurations, ensuring reliable performance in demanding electronic applications requiring precise timing references.

Feature Summary

• Integrates a Rubidium atomic resonator for superior long-term frequency stability and low phase noise characteristics compared to standard crystal oscillators.
• Provides a direct CMOS-compatible digital output signal, simplifying interface requirements with downstream digital logic circuits.
• Features a self-contained module design that incorporates the necessary vacuum cell and control electronics for autonomous operation.

Applications

• Telecommunications base stations requiring precise synchronization
• Navigation and GPS reference systems
• Test and measurement instrumentation

Procurement Notes

Verify the specific revision level and manufacturing date code against the latest Microsemi datasheet to ensure compatibility with system thermal profiles. Confirm that the power supply infrastructure can sustain the 2.8 A peak current demand without voltage droop during startup or lock acquisition phases.

Selection Notes

Select this component when application requirements dictate atomic-level stability over extended periods rather than short-term jitter performance. Ensure the host system provides adequate physical space for the module form factor and sufficient cooling capacity due to the significant power dissipation associated with the internal heater elements.

Part Context

This part belongs to the Microsemi (now Microchip) SA.31M series of Rubidium clocks. These modules are distinct from standard VCXOs or TCXOs by utilizing alkali gas vapor cells to maintain frequency accuracy independent of aging and environmental drift, serving as primary frequency standards in critical infrastructure.

Replacement Considerations

Direct pin-for-pin replacements are limited due to proprietary atomic cell designs. Evaluate alternative models within the same SA.31M family only if they share identical mechanical dimensions and electrical specifications, particularly the 10 MHz CMOS output and 5V supply requirements.