090-44350-22

Overview

The Microsemi 090-44350-22 is a high-precision atomic oscillator module based on the SA.35m series, utilizing a rubidium clock with an enabled atomic transition (AT) configuration. It operates at a nominal frequency of 10 MHz and delivers a CMOS output signal. The device is powered by a 5V supply and draws a maximum current of 2.8A. Designed for through-hole mounting, it features a standard OCXO pinout within a compact module package measuring 2.000 inches in length and width, with a maximum seated height of 0.740 inches. The unit supports an operating temperature range from -10°C to +75°C.

Feature Summary

• High-precision atomic clock performance ensuring exceptional frequency stability
• Small form factor design adhering to standard OCXO pinout specifications
• Low power consumption characteristics relative to traditional oven-controlled oscillators
• Robust holdover capability maintaining accuracy over typical temperature variations

Applications

• Telecommunications infrastructure requiring precise timing synchronization
• Test and measurement equipment demanding stable reference frequencies
• Navigation and positioning systems relying on accurate time standards
• Industrial control systems needing reliable clock sources

Procurement Notes

Verify the specific suffix designation to confirm the exact atomic transition state and output logic family, as variants within the SA.35m series may differ in electrical characteristics or enablement states. Ensure that the procurement documentation explicitly references the Microsemi part number to distinguish between similar OCXO modules. Confirm compatibility with existing PCB footprints regarding the through-hole mounting style and verify thermal management requirements for the specified current draw during operation.

Selection Notes

Select this component when application requirements demand superior long-term frequency stability compared to standard crystal oscillators. Consider the module dimensions and through-hole mounting constraints against available board space. Evaluate the power budget carefully due to the 2.8A maximum current requirement. Verify that the CMOS output interface aligns with downstream circuitry voltage levels and input thresholds without additional buffering.

Part Context

This model belongs to the Microsemi SA.35m series of atomic oscillators, which are engineered for applications requiring high stability and low phase noise. The series typically integrates a rubidium vapor cell with associated electronics to provide a self-contained frequency reference. These modules serve as direct replacements for older generation OCXOs in systems where size reduction and improved performance metrics are prioritized over legacy form factors.

Replacement Considerations

Direct substitutes include other models within the SA.35m family such as the 090-44350-21, provided the specific atomic transition settings and output logic match the system requirements. Cross-reference pinouts and mechanical dimensions to ensure physical compatibility. Verify that any replacement maintains the same 10 MHz frequency and CMOS output type to avoid redesigning the host circuitry.