HMC519

Overview

The HMC519LC4 is a monolithic microwave integrated circuit (MMIC) low noise amplifier manufactured by Analog Devices Inc. Designed for VSAT applications, it operates within the 18 GHz to 31 GHz frequency range. The device utilizes silicon technology and is housed in a compact 24-lead TFCQFN package with exposed paddle. Key electrical specifications include a typical gain of 14.4 dB, a noise figure of 3.5 dB, and a P1dB output power of 12.2 dBm. It requires a single 3V supply voltage and draws approximately 75 mA of current.

Feature Summary

• Integrated MMIC design optimized for low noise performance in high-frequency satellite communications
• Single-supply operation simplifies power management requirements
• Compact surface-mount package facilitates integration into space-constrained RF front-end modules

Applications

• VSAT uplink and downlink receiver chains
• Ka-band satellite communication systems
• Point-to-point microwave radio receivers
• Test and measurement equipment operating in the Ka-band spectrum

Procurement Notes

Verify the specific suffix (e.g., LC4, TR) to ensure correct packaging and tape-and-reel configuration. Confirm RoHS compliance status and moisture sensitivity level (MSL 3) prior to PCB assembly planning. Check for restricted distribution status as availability may vary by region. Ensure ESD protection protocols are followed during handling due to the sensitive RF nature of the component.

Selection Notes

Select this component when designing Ka-band receivers requiring high linearity and low noise figures. Compare gain and noise specifications against system link budget requirements. Consider the 24-CQFN footprint for layout compatibility. Evaluate thermal dissipation capabilities given the 75mA supply current. Verify interface matching networks align with the 50-ohm system impedance typically used in VSAT applications.

Part Context

The HMC519 belongs to Analog Devices' HMC519G series of RF amplifiers. It is part of a broader portfolio of microwave components designed for wireless infrastructure. The family includes related variants such as the HMC519-SX evaluation board and other frequency-specific amplifiers. This series supports the development of robust signal chains for modern satellite communication standards.

Replacement Considerations

Direct substitutes are not explicitly listed in public documentation. Evaluate alternative LNA models from Analog Devices or competitors with similar 18-31 GHz coverage, 3V supply, and comparable gain/noise metrics. Ensure pinout compatibility if considering pin-for-pin replacements.