HMC311ST89

Overview

The HMC311ST89 is a GaAs InGaP Heterojunction Bipolar Transistor (HBT) Gain Block MMIC SMT amplifier designed for operation from DC to 6 GHz. It features a typical gain of 16 dB and a noise figure of 5 dB. The device operates on a 5 V supply with a current consumption of 55 mA. Key performance metrics include a P1dB compression point of 15.5 dBm, an OIP3 of 31.5 dBm, and an input return loss of 14 dB. It is housed in an industry-standard SOT-89-3 package and supports a power dissipation of 340 mW across a temperature range of -40°C to +85°C.

Feature Summary

• Utilizes GaAs InGaP HBT technology for high-performance RF amplification
• Provides broadband coverage from DC to 6 GHz in a compact surface-mount package
• Designed as a gain block MMIC suitable for cascading in 50 Ohm systems

Applications

• Wireless infrastructure components
• Test and measurement equipment
• Broadband communication systems

Procurement Notes

Verify the specific suffix (e.g., ETR vs. ST89) against official Analog Devices documentation, as variants may differ in packaging or lifecycle status. Confirm availability through authorized distributors, noting that some listings indicate obsolete status or limited regional sales restrictions. Ensure compliance with RoHS directives by checking the detailed certification data provided in the manufacturer's datasheet before finalizing procurement plans.

Selection Notes

Select this component when a wideband DC-to-6 GHz gain stage is required within a 50 Ohm system architecture. The SOT-89-3 package offers a balance between thermal performance and board space efficiency. Consider the 5 V supply requirement and 55 mA current draw during power budgeting. Evaluate the 5 dB noise figure and 16 dB gain against system link budget requirements to ensure adequate signal integrity without excessive linearity demands.

Part Context

The HMC311 series represents Analog Devices' portfolio of InGaP HBT gain block amplifiers. These monolithic microwave integrated circuits (MMICs) are engineered for robust performance in wireless applications. The ST89 variant specifically denotes the surface-mount configuration in the SOT-89 package, distinguishing it from other form factors within the broader HMC311 family designed for similar frequency ranges.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult Analog Devices technical support for qualified alternatives if the HMC311ST89 is discontinued or unavailable.