GALI-4+

Overview

The GALI-4+ is a monolithic microwave amplifier from Mini-Circuits, utilizing InGaP HBT technology. It operates over a frequency range of DC to 4 GHz and is housed in a miniature SOT-89 surface-mount package. The device offers high dynamic range with internally matched 50 Ohm input and output impedances. Key electrical specifications include a typical gain of 13.1 dB, a noise figure of 4 dB, a P1dB compression point of 17.5 dBm, and an OIP3 of 32.7 dBm. It requires a supply voltage between 4.2V and 5.5V with a current draw of 65 mA.

Feature Summary

• Utilizes InGaP HBT technology for repeatable performance across production lots
• Internally matched to 50 Ohms for simplified circuit integration
• Enclosed in a miniature SOT-89 surface-mount package

Applications

• Cellular infrastructure amplification
• PCS band signal processing
• Wideband RF front-end modules

Procurement Notes

Verify the specific suffix designation when ordering, as the '+' indicates RoHS compliance. Confirm that the required operating temperature range aligns with the specified -45°C to +85°C limits. Ensure the PCB footprint matches the SOT-89-4 package dimensions provided in the official datasheet. Check for any lot-to-lot performance variations if strict consistency is required for high-volume production.

Selection Notes

Select this component for applications requiring wideband amplification up to 4 GHz with low noise characteristics. The internal 50 Ohm matching eliminates external matching networks, reducing design complexity. Consider the 65 mA supply current for power budget calculations. This model is suitable for cellular and PCS bands where high linearity and gain are prioritized over extreme power output.

Part Context

The GALI-4+ belongs to the GALI series of RF amplifiers by Mini-Circuits. This series includes various models optimized for different frequency ranges and gain requirements. The GALI-4+ specifically targets the DC to 4 GHz spectrum, filling a niche for broadband applications in communication systems. It complements other Mini-Circuits components like filters and mixers in complete RF solutions.

Replacement Considerations

Public confirmed substitute part numbers: None identified.