HMC431LP4ETR

Overview

The HMC431LP4ETR is a GaAs InGaP HBT MMIC Voltage Controlled Oscillator with an integrated buffer amplifier, manufactured by Analog Devices Inc. It operates within the frequency range of 5.5 GHz to 6.1 GHz and is housed in a 24-pin LFCSP (QFN) package measuring 4 mm x 4 mm. The device requires a supply voltage between 2.75 V and 3.25 V, drawing a typical current of 34 mA. It features a tuning voltage range of 0 VDC to 10 VDC and delivers an output power of 2 dBm. Key performance metrics include a phase noise of -102 dBc/Hz and a tuning sensitivity of 12 MHz/V. The component supports surface mount installation and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates a negative resistance device, varactor diode, and resonator into a single MMIC structure for compact design.
• Includes an on-chip buffer amplifier to isolate the oscillator core from load variations and improve signal integrity.
• Utilizes GaAs InGaP Heterojunction Bipolar Transistor technology to ensure high reliability and consistent RF performance.

Applications

• Wireless communication systems requiring stable local oscillation signals.
• Test and measurement equipment needing precise frequency generation.
• Satellite communication transceivers operating in the specified microwave band.

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm that the received part matches the specific HMC431LP4ETR designation, as packaging variants such as cut tape or reel may exist. Ensure storage conditions comply with moisture sensitivity level requirements prior to soldering. Cross-reference datasheet revisions to confirm pinout and electrical specifications align with current design constraints before final procurement.

Selection Notes

Select this component when a fixed-frequency VCO solution is required within the 5.5 GHz to 6.1 GHz spectrum. The integrated buffer amplifier simplifies circuit design by reducing the need for external isolation stages. Consider the 24-pin QFN footprint for space-constrained PCB layouts. Evaluate the -102 dBc/Hz phase noise specification against system sensitivity requirements. Ensure the 0-10 VDC tuning voltage range is compatible with the available control voltage sources in the application architecture.

Part Context

This part belongs to the HMC431 series of monolithic microwave integrated circuits designed for high-performance RF applications. It represents a specialized solution for generating stable frequencies in modern wireless infrastructure. The integration of passive components like the resonator reduces external component count compared to discrete VCO designs.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the available documentation. Verify compatibility with any alternative VCOs by matching the 5.5-6.1 GHz frequency range, 24-QFN package dimensions, and 2.75-3.25 V supply requirements. Consult Analog Devices technical support for validated cross-references.

FAQ

What is the tuning sensitivity of the HMC431LP4ETR?

The tuning sensitivity is 12 MHz/V, indicating the frequency change per volt of applied tuning voltage.

Does the HMC431LP4ETR include an output buffer?

Yes, the device integrates a buffer amplifier to provide isolation between the oscillator core and the output load.