HMC498

Overview

The HMC498 is a high dynamic range GaAs pHEMT MMIC power amplifier designed for operation between 17 and 24 GHz. It provides 24 dB of gain with a saturated output power of +27 dBm. The device operates from a +5V supply voltage, achieving a power added efficiency (PAE) of 25%. This component utilizes GaAs technology to deliver robust performance in demanding RF applications.

Feature Summary

• High dynamic range GaAs pHEMT MMIC construction
• Integrated 50 Ohm input and output matching
• Compact die size suitable for multi-chip module integration

Applications

• Point-to-point radio systems
• Point-to-multi-point radio networks
• VSAT (Very Small Aperture Terminal) equipment
• Military and aerospace communication systems

Procurement Notes

Verify the specific package configuration required for your design, as the HMC498 is available in both bare die and surface-mount variants like the HMC498LC4. Confirm availability status directly with Analog Devices or authorized distributors, as supply levels may vary. Ensure that your PCB layout supports the thermal and electrical requirements specified in the official datasheet for optimal performance.

Selection Notes

Select the HMC498 when designing systems requiring high linearity and power output in the K-band frequency range. Its integrated matching networks simplify circuit design by eliminating external components. Consider the operating temperature range and biasing conditions (+5V supply) during system architecture planning to ensure compatibility with existing power management solutions.

Part Context

The HMC498 belongs to Analog Devices' portfolio of GaAs pHEMT MMIC power amplifiers. It is engineered for medium-power applications where high gain and saturation power are critical. The component represents a solution for integrating high-frequency amplification into compact modules used in wireless communications and specialized radar systems.

Replacement Considerations

Check the HMC498LC4 variant if a surface-mount LGA-24 package is preferred over the bare die form factor. Verify pinout and thermal characteristics against current designs before substitution.