FMSN3903

Overview

The FMSN3903 is a USB frequency synthesizer phase-locked loop (PLL) module manufactured by Fairview Microwave. It operates within an output frequency range of 10 GHz to 20 GHz. The device provides an output power level of -19 dBm and utilizes a 50 MHz reference signal. It exhibits a phase noise performance of -80 dBc/Hz. The module features SMA connectors for interface connections. It is designed for operation with an operating supply current of 500 mA.

Feature Summary

• Integrates USB control interface with phase-locked loop synthesis technology
• Provides stable RF output in the 10 GHz to 20 GHz frequency band
• Features low phase noise characteristics for signal purity
• Includes SMA connectors for direct cable attachment

Applications

• Radar system local oscillator generation
• Test and measurement equipment signal sources
• Wireless communication test fixtures
• Frequency synthesis modules for high-frequency applications

Procurement Notes

Verify that the specific unit matches the FMSN3903 designation and confirms the 10 GHz to 20 GHz operational range. Ensure compatibility with the required 50 MHz reference input and check that the SMA connector interfaces align with existing cabling infrastructure. Confirm the operating supply current requirement of 500 mA is supported by the host power system before integration.

Selection Notes

Select this component when a wideband frequency synthesis solution in the K-band is required. The FMSN3903 is suitable for applications demanding precise frequency control via USB interface. Consider the -80 dBc/Hz phase noise specification for sensitive detection systems. Verify that the -19 dBm output power meets the downstream amplifier or mixer input requirements without additional gain stages.

Part Context

This part belongs to Fairview Microwave's line of RF miscellaneous ICs and modules, specifically focusing on phase-locked loops. It serves as a complete frequency synthesis solution rather than a discrete integrated circuit. The module integrates the PLL functionality with necessary interface connectors, simplifying integration into larger RF systems compared to bare die solutions.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Direct replacement requires matching the 10 GHz to 20 GHz frequency range, SMA interface type, and USB control protocol. Verify electrical parameters such as phase noise and output power against the original design specifications.

FAQ

What is the output power specification of the FMSN3903?

The FMSN3903 provides an output power of -19 dBm.

Does the FMSN3903 support USB control?

Yes, the FMSN3903 is a USB frequency synthesizer PLL, indicating it supports USB-based control and configuration.

What type of connectors are used on the FMSN3903 module?

The module is equipped with SMA connectors for RF output and reference input connections.