HMC391LP4

Overview

The HMC391LP4 is a monolithic microwave integrated circuit (MMIC) voltage-controlled oscillator (VCO) with an integrated buffer amplifier, manufactured by Analog Devices Inc. Operating within the frequency range of 3.9 GHz to 4.45 GHz, this component delivers an output power of 5 dBm. It functions with a supply voltage between 2.75 V and 3.25 V, drawing a current of 30 mA to 39 mA. The device features a tuning voltage range of 0 VDC to 10 VDC and a push specification of 16 MHz/V. Phase noise performance reaches -106 dBc/Hz. Packaged in a 24-lead QFN (4.1 mm x 4.1 mm x 1 mm), it supports surface-mount installation and operates across temperatures from -40°C to +85°C.

Feature Summary

• Integrates a voltage-controlled oscillator with a dedicated buffer amplifier for signal isolation.

Applications

• VSAT communication systems
• Point-to-point wireless links
• RF test and measurement equipment

Procurement Notes

Verify component authenticity through authorized Analog Devices channels or certified distributors. Confirm RoHS compliance status as indicated in official documentation. Ensure ESD handling protocols are followed during storage and assembly. Validate pinout and marking codes against the manufacturer datasheet to prevent integration errors. Check for obsolescence notices or lifecycle changes before finalizing procurement plans.

Selection Notes

Select this component when a compact MMIC solution is required for the 3.9–4.45 GHz band. Consider the integrated buffer amplifier if load isolation is critical. Evaluate the 24-QFN package dimensions against PCB space constraints. Assess thermal management requirements given the operating temperature range. Compare phase noise specifications against system sensitivity needs.

Part Context

The HMC391LP4 belongs to the HMC391 series of RF oscillators designed for high-performance applications. It utilizes GaAs MMIC technology to achieve stable frequency generation. The part is distinct from general-purpose oscillators due to its specific tuning characteristics and integrated buffering. It serves as a core frequency source in microwave transceiver architectures.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult Analog Devices technical support for direct replacements or cross-reference options based on specific electrical requirements.

FAQ

What is the tuning voltage range for the HMC391LP4?

The tuning voltage range is 0 VDC to 10 VDC.

Does the HMC391LP4 include an output buffer?

Yes, the device integrates a buffer amplifier to isolate the VCO from load variations.