GALI-21+

Overview

The GALI-21+ is a wideband monolithic microwave integrated circuit (MMIC) amplifier manufactured by Mini-Circuits. It operates from DC to 8 GHz with a typical gain of 9 dB and a noise figure of 4 dB. The device utilizes InGaP technology and is housed in an SOT-89-4 surface-mount package. Key performance metrics include a P1dB compression point of 12.6 dBm, an OIP3 of 27 dBm, and an input return loss of 14 dB. It requires a 3.5 V supply voltage and draws 40 mA of current. The component supports single-channel operation and functions within a temperature range of -45°C to +85°C.

Feature Summary

• Provides high dynamic range performance across a wide frequency band
• Features repeatable lot-to-lot performance characteristics
• Enclosed in a compact SOT-89 surface-mount package for easy integration

Applications

• General-purpose RF amplification in wireless communication systems
• Signal conditioning in test and measurement equipment
• Broadband receiver front-end stages requiring low noise and moderate gain

Procurement Notes

Verify the specific ordering suffix to ensure compliance with RoHS directives, as indicated by the '+' designation. Confirm that the required packaging format, such as cut tape or reel, aligns with your assembly line capabilities. Cross-reference the manufacturer part number GALI-21+ with official Mini-Circuits documentation to validate electrical specifications against your design requirements before finalizing procurement.

Selection Notes

Select this component when a wide bandwidth covering DC to 8 GHz is required alongside moderate gain and low noise characteristics. The InGaP technology offers a balance of performance and cost-effectiveness for general-purpose applications. Ensure the SOT-89-4 package footprint fits within the available PCB space and that the thermal management strategy accommodates the specified operating temperature range and power dissipation levels.

Part Context

The GALI-21+ belongs to the GALI series of gain block amplifiers from Mini-Circuits. This series is designed for versatile RF applications requiring reliable performance in a small form factor. The GALI-21+ specifically addresses needs for broadband amplification where consistent gain and noise figures are critical across a wide spectrum, making it a standard choice for engineers designing multi-band or ultra-wideband circuits.

Replacement Considerations

Direct substitutes within the same family may include other GALI series models with adjusted gain or frequency ranges. Verify pin compatibility and electrical parameters such as gain flatness and noise figure when considering alternatives. Consult Mini-Circuits application notes for recommended replacement strategies ensuring signal integrity and impedance matching remain unaffected.