ZJL-4HG+

Overview

The ZJL-4HG+ is a coaxial RF amplifier from Mini-Circuits designed for radar and general RF applications. It operates within a frequency range of 20 MHz to 4 GHz with a 50 Ω impedance. Key electrical specifications include a typical gain of 17 dB, a noise figure of 4.5 dB, and an output power of 15 dBm. The device requires a supply voltage of 12 V and draws 75 mA of current. It supports a maximum DC voltage of +13 V and functions within an operating temperature range of -40°C to 75°C.

Feature Summary

• Coaxial construction with SMA connectors for reliable signal transmission
• Wideband operation covering 20 MHz to 4 GHz
• High gain performance suitable for radar systems

Applications

• Radar systems
• RF signal amplification
• Test and measurement equipment

Procurement Notes

Verify the specific datasheet revision (e.g., REV. E) when sourcing components, as specifications may vary between revisions. Confirm that the required operating voltage aligns with the standard 12 V supply rather than the absolute maximum rating of +13 V. Ensure compatibility with SMA connector interfaces for system integration.

Selection Notes

Select this component when a wide bandwidth up to 4 GHz is required alongside moderate gain. Consider the 12 V supply requirement and 75 mA current draw for power budgeting. Evaluate the 4.5 dB noise figure against system sensitivity requirements. Compare physical dimensions and thermal characteristics against alternative gain blocks if space or heat dissipation is constrained.

Part Context

The ZJL-4HG+ belongs to the ZJL series of coaxial amplifiers manufactured by Mini-Circuits. This series is characterized by its robust construction and broad frequency coverage. The 'HG' suffix typically denotes specific performance enhancements or variations within the ZJL family, distinguishing it from standard models like the ZJL-4G.

Replacement Considerations

The ZJL-4G is a related model in the same series but may differ in specific electrical parameters such as gain or frequency response. Verify exact pinout and specification alignment before substituting. No other direct substitute part numbers are confirmed in public documentation.