HMC454ST89

Overview

The HMC454ST89 is a high dynamic range GaAs InGaP Heterojunction Bipolar Transistor (HBT) MMIC amplifier designed for operation between 0.4 and 2.5 GHz. It delivers 12.5 dB of gain with a P1dB of 27.5 dBm and a noise figure of 6.5 dB. The device operates on a 5V supply, drawing 175mA. Packaged in an SOT-89 surface-mount format, it is tested at 2.15 GHz. This component is classified as obsolete and no longer manufactured.

Feature Summary

• Utilizes GaAs InGaP HBT technology for high dynamic range performance
• Provides wideband amplification across the 0.4 to 2.5 GHz frequency spectrum
• Features high linearity characteristics suitable for demanding RF applications

Applications

• GPS receiver front ends
• Wireless communication systems
• Test and measurement equipment

Procurement Notes

This part number is officially marked as obsolete and no longer manufactured by Analog Devices Inc. Procurement must rely on remaining stock from authorized distributors or secondary market suppliers. Verify the specific revision suffix and manufacturing date code carefully, as availability varies significantly. Ensure compatibility with existing board designs before sourcing, as direct replacement components may require schematic adjustments.

Selection Notes

Select this component only if legacy design compatibility is required, as it is discontinued. For new designs, consider modern equivalents that offer similar gain and bandwidth specifications within the 400MHz to 2.5GHz range. Evaluate current consumption and supply voltage requirements against system constraints. Confirm that the SOT-89 package fits the available PCB footprint and thermal management strategy.

Part Context

The HMC454 series represents a family of medium-power MMIC amplifiers from Analog Devices. The ST89 variant specifically denotes the SOT-89 surface-mount package configuration. These amplifiers are engineered for applications requiring high IP3 and stable gain over a broad bandwidth. The HMC454ST89 serves as a specific implementation within this lineage, optimized for general-purpose RF amplification tasks.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source documentation due to the component's obsolete status. Designers should consult Analog Devices' official obsolescence notices or contact technical support for recommended modern replacements that match the electrical specifications and pinout requirements.