HMC684LP4E

RF Mixers Overview

The HMC684LP4E is a high dynamic range passive MMIC mixer with an integrated LO amplifier, operating from 700 MHz to 1 GHz. It features a maximum conversion loss of 9 dB and a noise figure of 7 dB. The device supports up to +30 dBm input IP3 for downconversion at 0 dBm LO drive. It utilizes a 24-pin 4x4 mm SMT QFN package and operates within a temperature range up to +85°C. Supply current is 85 mA.

RF Mixers Feature Summary

• Integrates LO amplifier for simplified system design
• High input IP3 ensures excellent linearity in cellular applications
• Compact 4x4 mm SMT QFN footprint minimizes board space
• Supports both up-conversion and down-conversion operations

RF Mixers Applications

• GSM/CDMA base station transceivers
• LTE/WiMAX/4G relay systems
• OFDM transmitter and receiver front-ends

RF Mixers Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm the specific suffix 'E' denotes lead-free packaging compliance. Check lifecycle status as obsolete; ensure availability matches project requirements. Validate pinout compatibility if replacing legacy designs. Request official datasheets for final electrical parameter confirmation before integration.

RF Mixers Selection Notes

Select this component for wideband RF applications requiring low LO drive power. The integrated LO amplifier reduces external component count. Ensure IF frequency response meets DC to 450 MHz requirements. Consider thermal management due to SMT QFN package constraints. Verify impedance matching for 50 Ohm systems. Evaluate pin compatibility with HMC685LP4E if frequency range adjustments are needed.

RF Mixers Part Context

Part of Analog Devices' HMC series MMIC mixers. Designed for wireless infrastructure. Pin-compatible with HMC685LP4E (1.7-2.2 GHz). Uses GaAs BiCMOS technology. Targets cellular and broadband communication standards. Provides high dynamic range performance in a compact form factor.

RF Mixers Replacement Considerations

HMC684LP4E is listed as obsolete. Direct pin-compatible substitute: HMC685LP4E (different frequency range 1.7-2.2 GHz). No identical functional replacement exists in public documentation. System redesign may be required for newer projects.