QPF4559SR

RF Front End (LNA + PA) Overview

The QPF4559SR is a high-power front-end module designed for 5 GHz Wi-Fi 7 (802.11be) systems, integrating a power amplifier, SP2T switch, and bypassable low-noise amplifier. It operates within the 5.17 GHz to 5.895 GHz frequency range with a 32 dB transmit gain and 1.6 dB noise figure. The device supports POUT levels of +18 dBm at MCS13 EHT80, +20 dBm at MCS11 HE80, and +24 dBm at MCS9 VHT80. It features integrated RF coupling and DC logarithmic power detection, optimized for 5 V operation.

RF Front End (LNA + PA) Feature Summary

• Integrates PA, SP2T switch, and LNA into a single compact package
• Optimized for 5V supply voltage to balance power consumption and linear output
• Includes integrated chip-level filtering for harmonics and 2.4 GHz suppression
• Features built-in RF coupler and wide-range constant-slope log power detector

RF Front End (LNA + PA) Applications

• Access points
• Wireless routers
• Home gateways
• Client devices
• IoT applications

RF Front End (LNA + PA) Procurement Notes

Verify the specific suffix 'SR' against official Qorvo documentation to confirm reel or cut-tape packaging configuration. Ensure compatibility with UNII1-4 channel requirements for Wi-Fi 7 deployments. Cross-reference datasheet electrical parameters with system design constraints before finalizing procurement orders.

RF Front End (LNA + PA) Selection Notes

Select this component for designs requiring high linearity and throughput in 5 GHz Wi-Fi 7 environments. The integrated matching reduces layout area compared to discrete solutions. Consider the 5V operating voltage requirement and the need for external biasing circuits compatible with the integrated power detection feedback loop.

RF Front End (LNA + PA) Part Context

This part belongs to the QPF4559 series, specifically engineered for next-generation wireless standards. It represents an evolution from previous Wi-Fi 6 modules by supporting wider bandwidths and higher modulation schemes. The integration level simplifies PCB design while maintaining performance necessary for dense network environments.

RF Front End (LNA + PA) Replacement Considerations

QPF4559TR13 serves as a functional equivalent within the same family, differing primarily in packaging format rather than electrical characteristics.