HMC518

Overview

The HMC518 is a GaAs HEMT MMIC power amplifier manufactured by Analog Devices Inc. It operates within the 21 GHz to 24 GHz frequency range and delivers 1 Watt of output power. The device features a gain of 17 dB, with a P1dB compression point of 30.5 dBm and an OIP3 of 39 dBm. It requires a 5 V supply voltage and draws 950 mA of operating current. The input return loss is specified at 15 dB. This single-channel RF amplifier is designed for high-performance applications requiring reliable signal amplification in the K-band spectrum.

Feature Summary

• Utilizes GaAs HEMT technology for efficient monolithic microwave integrated circuit performance
• Provides high linearity with significant third-order intercept point capabilities
• Engineered for stable operation as a dedicated power amplifier stage

Applications

• Point-to-point microwave communication links
• Satellite communication uplink and downlink systems
• Electronic warfare and radar subsystems

Procurement Notes

Verify component authenticity through authorized channels due to end-of-life status. Confirm that the die package variant meets specific board integration requirements. Review the discontinuance notification for long-term supply chain implications. Ensure compatibility with existing thermal management solutions for the bare die configuration.

Selection Notes

Select this component when a fixed 1 Watt output power level is required at 21-24 GHz. Consider the 5 V supply constraint and 950 mA current draw against system power budgets. Evaluate the bare die format against available assembly infrastructure. Compare linearity metrics against alternative MMICs if intermodulation distortion is critical.

Part Context

This part belongs to the HMC series of RF amplifiers from Analog Devices. It serves as a specialized solution for high-frequency power amplification tasks. The device complements other components in microwave subsystems where compact size and high efficiency are prioritized over discrete transistor complexity.

Replacement Considerations

The product is listed as discontinued. No direct public substitute part numbers are confirmed in official documentation. Designers should evaluate newer generation MMICs or consult manufacturer engineering support for valid cross-reference options.