QPF4550SR

RF Front End (LNA + PA) Overview

The QPF4550SR is an integrated RF front-end module designed for Wi-Fi 6 (802.11ax) systems operating in the 5.15GHz to 5.925GHz frequency range. It integrates a power amplifier and low-noise amplifier within a compact 16-QFN package measuring 2.5x2.5 mm. The device features an SP2T switch configuration, optimizing performance for high-efficiency wireless applications while maintaining linear output power at a 5V supply.

RF Front End (LNA + PA) Feature Summary

• Integrated front-end module combining power amplification and low-noise reception capabilities
• Optimized power amplifier performance specifically tuned for 5V supply operation
• Compact surface-mount form factor with integrated matching components

RF Front End (LNA + PA) Applications

• Wi-Fi 6 (802.11ax) access points and routers
• High-performance wireless client devices
• 5GHz band communication systems requiring integrated front-end solutions

RF Front End (LNA + PA) Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS3 compliance status and check for relevant Product Change Notices regarding material or source updates. Ensure the specific suffix matches design requirements, as packaging variations may exist without functional changes. Validate lead times due to potential stock limitations.

RF Front End (LNA + PA) Selection Notes

Select this component for designs prioritizing space efficiency and integrated signal chain management in 5GHz Wi-Fi environments. Evaluate thermal dissipation requirements given the dense QFN layout. Consider system-level gain and noise figure targets against the module's integrated specifications. Verify compatibility with existing antenna switching architectures utilizing SP2T configurations.

RF Front End (LNA + PA) Part Context

This part belongs to Qorvo’s wireless innovations portfolio focused on advanced connectivity solutions. It serves as a specialized variant within the QPF4550 series, tailored for modern Wi-Fi 6 standards. The module represents a shift toward highly integrated RF blocks that reduce board complexity compared to discrete component implementations.

RF Front End (LNA + PA) Replacement Considerations

The QPF4551SR is identified as a manufacturer-recommended alternative. Verify pinout compatibility and electrical parameter alignment before substitution. Review datasheet differences regarding specific gain or noise characteristics to ensure system performance remains within acceptable limits.