HMC475ST89TR

Overview

The HMC475ST89TR is a monolithic microwave integrated circuit (MMIC) gain block amplifier manufactured by Analog Devices Inc. Designed for cellular and CATV applications, it operates within a frequency range of 0 Hz to 4.5 GHz. The device utilizes SiGe HBT technology and is housed in a compact SOT-89 surface-mount package. Key electrical specifications include a typical gain of 21.5 dB, a noise figure of 3.8 dB, and an output P1dB compression point of 22 dBm. It requires a supply voltage between 8 V and 12 V with a typical supply current of 110 mA.

Feature Summary

• Integrated SiGe HBT MMIC design for high-performance RF amplification
• Optimized for cellular and CATV signal chain applications
• Compact SOT-89 surface-mount package for space-constrained designs

Applications

• Cellular base station front-end modules
• CATV distribution systems
• RF signal conditioning circuits

Procurement Notes

Verify the specific ordering suffix to ensure correct packaging configuration, as variations exist between tape-and-reel and cut-tape formats. Confirm that the component status aligns with project requirements, noting potential end-of-life or discontinuation statuses associated with this product line. Ensure compatibility with existing PCB footprints and thermal management strategies for the SOT-89 package.

Selection Notes

Select this component when a wide bandwidth up to 4.5 GHz is required alongside moderate power handling capabilities. The 21.5 dB gain and 3.8 dB noise figure make it suitable for intermediate frequency stages where signal integrity is critical. Consider the 110 mA supply current for power budget calculations and ensure the 8 V to 12 V operating range matches the system power architecture.

Part Context

This part belongs to the HMC475 series of MMIC amplifiers from Analog Devices Inc. These devices are engineered for robust performance in wireless communication infrastructure. The ST89 designation indicates the specific SOT-89 surface-mount package variant, distinguishing it from other pinout or package configurations within the broader family of RF amplifiers offered by the manufacturer.

Replacement Considerations

Public confirmed substitute part numbers: HMC475ST89E.