HMC391LP4ETR

Overview

The HMC391LP4ETR is a surface-mount monolithic microwave integrated circuit (MMIC) voltage-controlled oscillator (VCO) manufactured by Analog Devices Inc. It operates within a frequency range of 3.9 GHz to 4.45 GHz and includes an integrated buffer amplifier. The device requires a supply voltage between 2.75 V and 3.25 V, drawing approximately 39 mA of current. It features a tuning voltage range from 0 VDC to 10 VDC with a typical push of 16 MHz/V. The output power is rated at 5 dBm, and it exhibits a phase noise of -106 dBc/Hz. Packaged in a QFN-24 footprint measuring 4.1 mm x 4.1 mm x 1 mm, it supports operation temperatures from -40°C to +85°C.

Feature Summary

• Integrates a voltage-controlled oscillator with a dedicated buffer amplifier for signal isolation.
• Operates as a surface-mount MMIC component suitable for compact RF designs.
• Provides stable output power across the specified microwave frequency band.

Applications

• Wireless communication systems requiring local oscillation signals
• Test and measurement equipment needing precise frequency generation
• Satellite communication transceivers

Procurement Notes

Verify the specific ordering suffix and package variant against the official Analog Devices datasheet to ensure compatibility with your design requirements. Confirm that the QFN-24 package dimensions and thermal pad specifications match your PCB layout constraints. Check for any recent product change notices or lifecycle status updates directly from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when a fixed-frequency VCO with integrated buffering is required for the 3.9 to 4.45 GHz range. Ensure the control voltage supply can provide up to 10 VDC for full tuning range coverage. Verify that the 39 mA current draw fits within the system's power budget and that the 5 dBm output level meets the downstream stage input requirements without additional amplification.

Part Context

This part belongs to the HMC391 series of voltage-controlled oscillators from Analog Devices. It is designed for applications demanding reliable microwave frequency synthesis in a small form factor. The inclusion of the buffer amplifier simplifies circuit design by reducing load-pull effects on the core oscillator.

Replacement Considerations

Consult the official Analog Devices documentation for direct pin-compatible substitutes or updated revisions. Cross-reference with other HMC series VCOs if frequency ranges or packaging options differ from project requirements.

FAQ

What is the tuning sensitivity of the HMC391LP4ETR?

The device has a typical push value of 16 MHz/V, indicating its frequency variation relative to tuning voltage changes.

Does the HMC391LP4ETR include an output buffer?

Yes, the component integrates a buffer amplifier to isolate the oscillator core from load variations.