HMC498LC4TR

Overview

The HMC498LC4TR is a medium power amplifier from Analog Devices Inc., designed for VSAT applications within the 17 GHz to 24 GHz frequency range. It utilizes GaAs PHEMT MMIC technology and operates on a 5 V supply with a current consumption of 250 mA. Key electrical specifications include a gain of 21 dB, a noise figure of 4.5 dB, and a P1dB compression point of 25.5 dBm. The device features an OIP3 of 35 dBm and an input return loss of 13 dB. It is housed in a 24-TFQFN (4x4 mm) surface-mount package with exposed pads.

Feature Summary

• High dynamic range performance suitable for demanding RF signal chains
• Integrated GaAs PHEMT MMIC design for compact implementation
• Leadless Pb-free SMT package optimized for thermal dissipation

Applications

• VSAT uplink and downlink amplification
• Point-to-point microwave radio systems
• Satellite communication terminal front-ends

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to limited availability status. Confirm moisture sensitivity level (MSL 3) handling requirements during storage and assembly. Ensure compatibility with RoHS3 and REACH regulations. Validate that the specific tape-and-reel packaging matches your automated pick-and-place equipment specifications before finalizing procurement orders.

Selection Notes

Select this component when a medium power output stage is required in the Ka-band spectrum. The 21 dB gain and 25.5 dBm P1dB make it suitable for driving subsequent stages in multi-stage amplifier chains. Consider the 24-QFN footprint for PCB layout constraints. Evaluate thermal management needs given the 1.62 W power dissipation rating under continuous operation conditions.

Part Context

This part belongs to the HMC498G series of high-performance RF amplifiers. It complements other Analog Devices components like the HMC498LC4 evaluation board (108537-HMC498LC4) for development purposes. The device is categorized under Wireless & RF Integrated Circuits, specifically targeting satellite and fixed wireless access markets requiring reliable mid-power amplification.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. The HMC498LC4TR is the tape-and-reel variant of the HMC498LC4. Verify pinout and thermal pad connectivity if considering alternative manufacturers' devices for the same frequency band.