HMC385LP4E

Overview

The HMC385LP4E is a GaAs InGaP HBT MMIC Voltage Controlled Oscillator (VCO) from Analog Devices Inc., housed in a 24-QFN package. It operates within the 2.25 GHz to 2.5 GHz frequency range with a tuning voltage of 0 VDC to 10 VDC. The device delivers an output power of 4.5 dBm while consuming 41 mA at a supply voltage between 2.75 V and 3.25 V. It features integrated resonators and negative resistance, achieving a phase noise of -115 dBc/Hz.

Feature Summary

• Integrates GaAs InGaP HBT technology with built-in resonators for compact design
• Includes an internal buffer amplifier to isolate the oscillator core
• Supports wide voltage-controlled tuning across the specified band

Applications

• Wireless communication systems requiring stable local oscillation
• Test and measurement equipment needing low phase noise sources
• Satellite navigation receiver front-ends

Procurement Notes

Verify component authenticity through authorized Analog Devices channels due to limited availability status. Confirm RoHS compliance and moisture sensitivity levels prior to assembly. Ensure ESD protection protocols are followed during handling of the surface-mount QFN package. Cross-reference datasheet revisions to match specific manufacturing lot requirements.

Selection Notes

Select this model when a fixed-frequency VCO solution is required for the 2.25–2.5 GHz band. Consider the 41 mA current draw and 3V supply constraints against system power budgets. Evaluate the -115 dBc/Hz phase noise specification against system sensitivity requirements. Verify that the 24-QFN footprint fits the PCB layout constraints.

Part Context

Part of the HMC385 series of MMIC VCOs designed for RF applications. Shares family characteristics such as HBT construction and integrated matching networks. Differs from other models by its specific center frequency and output power profile within the S-band spectrum.

Replacement Considerations

HMC385LP4 is the non-E version of this component. Verify if environmental compliance differences exist between the LP4 and LP4E suffixes before substitution.