HMC998A

Overview

The HMC998A is a GaAs pHEMT MMIC power amplifier designed for wideband applications. It operates from 100 MHz to 22 GHz, delivering 2 Watts of output power. Key electrical specifications include a typical gain of 14 dB, a noise figure of 3 dB, and an OIP3 of 41.5 dBm. The device requires a supply voltage between 10 V and 15 V with a current draw of 500 mA. It features a P1dB compression point of 31.5 dBm and is housed in a die package suitable for surface mount installation.

Feature Summary

• Utilizes GaAs pHEMT technology for high-performance microwave amplification
• Provides broad operational bandwidth covering 100 MHz to 22 GHz
• Delivers high output power capability of 2 Watts
• Integrates as a monolithic microwave integrated circuit (MMIC)

Applications

• VSAT uplink systems
• Point-to-point microwave radio links
• Electronic warfare subsystems
• Test and measurement instrumentation

Procurement Notes

Verify component authenticity through authorized Analog Devices channels due to limited availability status. Confirm that the received die matches the specified GaAs pHEMT construction and package type. Review datasheet requirements for biasing networks and thermal management, as the device operates at high power levels. Ensure handling procedures account for moisture sensitivity and static discharge protection appropriate for bare die components.

Selection Notes

Select this component when wideband coverage from sub-GHz to K-band is required alongside high power output. Consider the 14 dB gain and 3 dB noise figure for link budget calculations in uplink scenarios. Evaluate the 10 V to 15 V supply requirement against available system power rails. Assess thermal dissipation needs given the 2 Watt output and 500 mA current consumption in the target application environment.

Part Context

The HMC998A belongs to the HMC998 series of power amplifiers manufactured by Analog Devices. It represents a high-power solution within their RF and microwave portfolio, leveraging GaAs pHEMT technology. This series targets applications demanding significant output power across extremely wide frequency ranges, distinguishing it from lower-power or narrowband alternatives in the company's catalog.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.