HMC385LP4

Overview

The HMC385LP4 is a monolithic microwave integrated circuit (MMIC) voltage-controlled oscillator (VCO) manufactured by Analog Devices Inc. It operates within the frequency range of 2.25 GHz to 2.5 GHz and is housed in a 24-lead QFN package measuring 4x4 mm. The device requires a supply voltage of 3 VDC and draws a typical current of 35 mA. It delivers an output power of +10 dBm with a phase noise of -115 dBc/Hz at a 1 MHz offset. The tuning voltage range spans from 0 VDC to 10 VDC, providing a sensitivity of approximately 2 MHz/V.

Feature Summary

• Integrates a buffer amplifier for improved signal isolation and drive capability
• Utilizes gallium arsenide (GaAs) MMIC technology for high reliability
• Features a compact surface-mount QFN package suitable for space-constrained designs

Applications

• Wireless local area network (WLAN) systems
• Point-to-point microwave radio links
• Satellite communication terminals
• Test and measurement instrumentation

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and lot traceability upon receipt. Ensure proper electrostatic discharge handling procedures are followed during storage and assembly. Cross-reference datasheet revisions to confirm pinout and electrical specifications match design requirements before integration into production systems.

Selection Notes

Select this component when a stable, low-phase-noise source is required in the 2.25–2.5 GHz band. Consider the 3 VDC supply constraint and 35 mA current draw for power budgeting. Evaluate the 24-QFN footprint against available PCB real estate. Compare performance metrics such as phase noise and output power against alternative VCOs if specific system thresholds are critical for link margin or spectral purity.

Part Context

The HMC385LP4 belongs to the HMC385 series of MMIC VCOs designed for high-performance wireless applications. These components are engineered to provide consistent frequency stability and low noise characteristics across varying environmental conditions. The series supports various frequency bands, with the LP4 variant specifically targeting the lower end of the C-band spectrum for robust RF front-end implementations.

Replacement Considerations

No officially confirmed substitute part numbers are publicly documented for direct replacement.