FMSN3900

Overview

The FMSN3900 is a Phase Locked Loop (PLL) frequency synthesizer module manufactured by Fairview Microwave. It operates within an output frequency range of 35 MHz to 4.4 GHz. The device delivers an output power capability between -20 dBm and 10 dBm. It features a phase noise specification of -103 dBc/Hz. The module utilizes SMA connectors for interface connections.

Feature Summary

• Integrated Phase Locked Loop architecture for frequency synthesis
• Wide operational frequency coverage from 35 MHz to 4.4 GHz
• Configurable output power levels ranging from -20 dBm to 10 dBm
• Low phase noise performance characterized at -103 dBc/Hz

Applications

• Radar systems requiring precise frequency generation
• Wireless communication infrastructure components
• Test and measurement equipment signal sources
• Electronic warfare subsystems

Procurement Notes

Verify the specific datasheet version and pinout configuration before integration, as module revisions may alter connector types or mounting requirements. Confirm that the required output power and phase noise specifications align with system design constraints. Ensure SMA connector mating compatibility with existing PCB traces or cable assemblies. Validate thermal management solutions against the module's operating temperature limits.

Selection Notes

Select this component when a wide tuning range up to 4.4 GHz is necessary alongside low phase noise characteristics. Consider the -103 dBc/Hz phase noise metric for applications sensitive to spectral purity. Evaluate the -20 dBm to 10 dBm output power range against amplifier requirements in the signal chain. Verify that the SMA interface matches the system's interconnect strategy.

Part Context

This module belongs to Fairview Microwave's portfolio of RF integrated circuits and modules designed for high-performance signal generation. It serves as a compact solution for frequency synthesis tasks where discrete PLL designs would require excessive board space. The product complements other RF components like amplifiers and cable assemblies in complete transmitter or receiver chains.

Replacement Considerations

No public substitute part numbers are documented. Direct replacement requires matching the 35 MHz to 4.4 GHz frequency range, -103 dBc/Hz phase noise, and SMA interface specifications.