HMC391LP4TR

Overview

The HMC391LP4TR is a Voltage Controlled Oscillator (VCO) with an integrated buffer amplifier, manufactured by Analog Devices Inc. It operates within the frequency range of 3.9 GHz to 4.45 GHz and is housed in a compact 24-QFN package measuring 4x4 mm. The device requires a supply voltage between 2.75 V and 3.25 V, drawing a typical current of 30 mA to 39 mA. It delivers an output power of approximately 5 dBm with a tuning sensitivity of 16 MHz/V. Phase noise performance reaches -106 dBc/Hz, and it supports a tuning voltage range from 0 VDC to 10 VDC across an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrates a VCO core with a dedicated buffer amplifier for signal isolation and drive capability.
• Utilizes a surface-mount QFN-24 package to minimize footprint in high-density designs.
• Provides stable oscillation across the Ku-band with specified phase noise characteristics.

Applications

• VSAT communication systems
• Point-to-point microwave links
• Test and measurement instrumentation

Procurement Notes

Verify the specific suffix 'TR' indicates tape-and-reel packaging when sourcing components. Confirm RoHS compliance status through official manufacturer documentation, as some listings may vary. Ensure the supplier provides valid traceability for the Analog Devices part number. Check for any regional distribution restrictions or limited availability notices prior to finalizing procurement orders.

Selection Notes

Select this component for applications requiring a fixed-frequency VCO solution in the 3.9–4.45 GHz range. Consider the 24-QFN thermal pad requirements for adequate heat dissipation during operation. Evaluate the 16 MHz/V tuning sensitivity against the available control voltage range in the system design. Compare power consumption and phase noise specifications against alternative devices if lower current draw or different frequency bands are required.

Part Context

This part belongs to the HMC391 series of MMIC VCOs designed for RF applications. It shares functional similarities with other members of the family but is distinct in its specific frequency coverage and output power levels. The LP4 designation typically refers to the lead-free QFN package variant used in modern surface-mount assembly processes.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source data. Consult Analog Devices technical support for direct replacements or cross-reference options based on specific frequency and performance requirements.