HMC454ST89TR

Overview

The HMC454ST89TR is a wide-band medium power amplifier manufactured by Hittite (Analog Devices). It operates within a frequency range of 400 MHz to 2.5 GHz, supporting RF types such as CDMA, GSM, and WCDMA. The device provides a typical gain of 17.8 dB with a P1dB compression point of 27.5 dBm. It features a noise figure of 8 dB and requires a single 5V supply voltage. Packaged in an SMT format, it is designed for high-performance linear amplification in wireless communication systems.

Feature Summary

• Utilizes InGaP HBT technology for robust performance across wide bandwidths
• Provides high linearity suitable for complex modulation schemes
• Operates on a single 5V supply for simplified biasing requirements

Applications

• CDMA base station front-end modules
• GSM infrastructure amplification stages
• WCDMA signal processing chains

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to ensure compatibility with required package variations and tape-and-reel specifications. Confirm that the component status remains active, as Analog Devices has discontinued select Hittite products. Cross-reference the date code and lot information to ensure compliance with RoHS standards and lead-free requirements specified in the official documentation.

Selection Notes

Select this component when designing circuits requiring moderate output power combined with wideband coverage from 400 MHz to 2.5 GHz. The 17.8 dB gain and 27.5 dBm P1dB make it suitable for intermediate gain stages rather than final power amplification. Consider the 8 dB noise figure if low-noise performance is critical; otherwise, prioritize this part for its balance of linearity and power handling in cellular infrastructure applications.

Part Context

This component belongs to the Hittite microwave amplifier family, now integrated into Analog Devices' portfolio. It represents a transition period product utilizing GaAs HBT technology. While many Hittite parts have been discontinued or replaced, this specific model serves as a legacy solution for existing designs requiring 2.5 GHz bandwidth capability in a surface-mount footprint.

Replacement Considerations

Check Analog Devices discontinuance notices for potential end-of-life status. No direct public substitute part numbers are confirmed in the provided data.