090-00218-001

Overview

The Microsemi Corporation 090-00218-001 is a Chip Scale Atomic Clock (CSAC) oscillator operating at a nominal frequency of 10 MHz. It utilizes an atomic resonance base resonator to deliver high-frequency stability, specified at ±0.5 ppb. The device features a CMOS output signal and requires a 3.3V supply voltage. It is housed in a 12-DIP module package with 9 leads, designed for through-hole mounting. The operational temperature range extends from -10°C to 70°C, ensuring reliable performance in demanding environments.

Feature Summary

• Provides ultra-high frequency stability through atomic clock technology
• Delivers precise 10 MHz timing signals via CMOS output interface
• Compact 12-DIP module form factor suitable for space-constrained designs

Applications

• Navigation and positioning systems requiring precise timekeeping
• Telecommunications infrastructure synchronization
• Military and aerospace electronic systems
• Test and measurement equipment calibration

Procurement Notes

Verify the specific ordering suffix to confirm the exact frequency tolerance and package variant, as Microsemi designations may vary by revision. Ensure compatibility with existing board layouts regarding the 12-DIP footprint and 3.3V power requirements. Confirm that the CMOS output logic levels align with downstream circuitry specifications before finalizing procurement orders.

Selection Notes

Select this component when standard crystal oscillators fail to meet stringent long-term stability requirements without external oven control. The CSAC architecture offers superior phase noise and aging characteristics compared to TCXOs. Consider the thermal management needs associated with the 12-DIP package and ensure the system environment remains within the specified -10°C to 70°C operating range for optimal performance.

Part Context

This part belongs to the SA.45s CSAC series, representing Microsemi's line of chip-scale atomic clocks. These devices integrate atomic vapor cell technology into a compact semiconductor package, bridging the gap between traditional quartz oscillators and larger, more expensive rubidium standards. The series is widely recognized for providing military-grade reliability in a significantly reduced form factor.

Replacement Considerations

Direct replacements include other models within the Microsemi SA.45s CSAC family, such as the 090-00218-004, which shares similar atomic clock functionality but may differ in specific frequency or tolerance parameters. Verify pinout compatibility and electrical specifications carefully when substituting across different suffixes within the same product family.