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GALI-51+

GALI-51+

Mini-Circuits
RF Amplifier IC Cellular, PCS 0Hz ~ 4GHz SOT-89
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Overview

The GALI-51+ is a wideband monolithic InGaP HBT amplifier designed for applications operating from DC to 4 GHz. It provides a stable gain of 13.4 dB and a P1dB of 18 dBm at 1 GHz, making it a versatile gain block for 50-ohm RF systems.

Why Choose This Part

This amplifier features internal 50-ohm matching, simplifying PCB layout by eliminating the need for external tuning components. The SOT-89 package includes an exposed metal bottom for low thermal resistance, ensuring high reliability at a typical supply current of 65mA.

Applications

Cellular Infrastructure
Used as a driver amplifier or buffer in PCS and cellular base station transceivers.
Broadband Gain Stage
Provides flat gain across a wide frequency range for CATV and satellite communication equipment.
IF Amplification
Serves as a high-linearity intermediate frequency amplifier in microwave radio links.
Test Equipment
Integrated into signal generators and analyzers for low-noise signal boosting up to 4 GHz.

Key Specifications

Gain 13.4dB
P1dB 18dBm
RF Type Cellular, PCS
Frequency 0Hz ~ 4GHz
Noise Figure 3.5dB
Mounting Type Surface Mount
Package / Case TO-243AA
Test Frequency 1GHz
Current - Supply 65mA
Voltage - Supply 4.2V ~ 5.5V
Supplier Device Package SOT-89

Getting Started

Biasing requires an external resistor (Rbias) connected to the supply voltage and an RF choke to inject DC into the output pin while maintaining RF isolation. Ensure the exposed paddle is soldered to a large ground plane to manage the thermal dissipation required for its 18 dBm power output.

Also Consider

GALI-39+ Mini-Circuits - Offers higher gain and a lower noise figure of 2.4 dB for more sensitive receiver front ends.