HMC459-SX

Overview

The HMC459-SX is a GaAs MMIC PHEMT distributed power amplifier die from Analog Devices Inc., operating between DC and 18 GHz. It provides 17 dB of gain with a noise figure of 3 dB. The device requires an 8 V supply voltage and draws 290 mA of current. Key performance metrics include a P1dB compression point of 25 dBm and an OIP3 of 31.5 dBm. Input return loss is specified at 19 dB. The component supports a minimum operating temperature of -55 C and a maximum of +85 C, with a power dissipation rating of 4.64 W.

Feature Summary

• Utilizes GaAs PHEMT technology for high-performance RF amplification
• Features distributed architecture suitable for wideband applications
• Provides high linearity with significant output power capabilities

Applications

• Telecom infrastructure systems
• Wideband signal processing chains
• Military and aerospace radar subsystems

Procurement Notes

Verify the specific suffix requirements for your design, as the SX variant denotes a specific packaging or testing configuration compared to standard versions. Confirm availability status directly with authorized distributors, as supply constraints may apply. Ensure that the die-level form factor aligns with your board assembly capabilities and thermal management strategies before finalizing procurement orders.

Selection Notes

Select this component when a wideband DC-to-18 GHz power amplifier is required within a compact die footprint. Consider the 8 V supply requirement and 290 mA current draw for power budget calculations. Evaluate the 25 dBm P1dB and 31.5 dBm OIP3 against system linearity needs. Ensure compatibility with GaAs process integration and appropriate substrate selection for optimal thermal and electrical performance in the target application environment.

Part Context

This part belongs to the HMC459 series of GaAs MMIC power amplifiers. It is designed for high-frequency applications requiring broad bandwidth and moderate to high output power. The distributed topology allows for consistent gain and impedance matching across the extensive frequency range, making it distinct from narrowband amplifier designs in the same product family.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify if other variants within the HMC459 series or compatible Analog Devices MMIC families meet the specific electrical and mechanical requirements of the design.