QPF4288ASR

RF Front End (LNA + PA) Overview

The Qorvo QPF4288ASR is an integrated front-end module (FEM) designed for Wi-Fi 6 (802.11ax) systems operating in the 2.4 GHz band, specifically covering 2.412 GHz to 2.484 GHz. It integrates a 2.4 GHz power amplifier (PA), low-noise amplifier (LNA), single-pole double-throw (SPDT) switch, voltage regulator, and coupler into a single device. The module optimizes PA performance at a 5V supply voltage to conserve power while maintaining high linear output power. It features fixed receive path matching for consistent noise coefficient performance and includes integrated harmonic filtering with DC or RF power detection options.

RF Front End (LNA + PA) Feature Summary

• Integrates power amplifier, LNA, SPDT switch, and regulator for minimized layout area
• Optimizes power amplifier efficiency at 5V supply voltage
• Includes integrated harmonic filtering and fixed receive path matching
• Offers selectable DC or RF power detection outputs

RF Front End (LNA + PA) Applications

• Access points
• Wireless routers
• Residential gateways
• Customer premises equipment

RF Front End (LNA + PA) Procurement Notes

Verify the specific suffix 'ASR' against the manufacturer's official datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with 802.11ax system requirements. Confirm that the integrated matching and fixed receive path align with the target PCB layout constraints. Validate that the 5V supply voltage requirement matches the system design before procurement.

RF Front End (LNA + PA) Selection Notes

Select this module for applications requiring high integration and compact form factors in Wi-Fi 6 infrastructure. The fixed receive path matching limits flexibility for custom external filtering but simplifies design. Consider the available power detection options (DC vs. RF) based on monitoring requirements. The 5V optimization makes it suitable for standard infrastructure power rails.

RF Front End (LNA + PA) Part Context

The QPF4288 series represents Qorvo's solution for high-performance Wi-Fi 6 front ends. The QPF4288ASR variant specifically targets the 2.4 GHz band for 802.11ax compliance. It consolidates multiple discrete components into one package to reduce board space and simplify assembly for access point and router manufacturers.

RF Front End (LNA + PA) Replacement Considerations

Public confirmed substitute part numbers are not provided in the source documentation. Verify cross-compatibility with existing designs if considering alternatives.

RF Front End (LNA + PA) FAQ

What power detection options are available?

The module offers two choices: a DC power detector with voltage output or an RF power detector using a directional coupler.

How is the receive path configured?

The receive path is fixed, allowing for optimal placement of external filters in the application layout.