GALI-55+

Overview

The GALI-55+ is a wideband monolithic RF amplifier manufactured by Mini-Circuits, designed for cellular and PCS applications. It operates from DC to 4 GHz in a compact SOT-89 surface-mount package. The device delivers a typical gain of 15.7 dB with a noise figure of 3.3 dB at 1 GHz. It requires a supply voltage between 3.8V and 4.8V and draws 50mA of current. Key performance metrics include a P1dB output power of 15 dBm, ensuring high dynamic range and repeatable lot-to-lot performance.

Feature Summary

• Wideband operation covering DC to 4 GHz frequency range
• High dynamic range suitable for demanding signal processing
• Repeatable performance characteristics across production lots
• RoHS compliant construction within a small SOT-89 package

Applications

• Cellular communication systems
• PCS (Personal Communication Services) infrastructure
• General purpose RF amplification stages
• Test and measurement equipment front-ends

Procurement Notes

Verify the specific ordering suffix required for your volume needs, such as tape-and-reel or cut-tape options, when placing orders through authorized distributors. Confirm that the RoHS3 compliance status aligns with your environmental regulations. Ensure the SOT-89 footprint matches your PCB design constraints. Check for any lead time variations due to manufacturing schedules before finalizing procurement plans.

Selection Notes

Select this component when a wideband solution up to 4 GHz is required with moderate gain and low noise. The 15.7 dB gain and 3.3 dB noise figure make it suitable for sensitive receiver chains. Consider the 50mA current consumption for power budget calculations. The SOT-89 package offers a balance between thermal performance and board space efficiency for general-purpose RF designs.

Part Context

The GALI-55+ belongs to Mini-Circuits' GALI series of monolithic microwave integrated circuits (MMICs). These components are known for providing reliable, cost-effective amplification solutions for various wireless standards. The '+' suffix indicates RoHS compliance, distinguishing it from older non-compliant versions while maintaining identical electrical specifications and pinouts.

Replacement Considerations

Direct replacements should be sought within the GALI series for compatible form factors. Verify that substitute parts meet the same 4 GHz bandwidth and SOT-89 package requirements. Ensure equivalent gain and noise figure specifications to maintain system performance integrity without redesigning surrounding circuitry.