QM42391SR

RF Front End (LNA + PA) Overview

The QM42391SR is a Hastings Dual 2.4GHz Front-End Module (FEM) manufactured by Qorvo. It is designed for Wi-Fi 7 (802.11be) systems and operates at 2.4 GHz. The module features an integrated power amplifier (PA) and low-noise amplifier (LNA). It supports various power supply voltages ranging from 3.0V to 5.0V. Key electrical parameters include a transmit gain of 29dB, a noise figure of 1.8dB, and receive gains of 17dB in high-gain mode and 16dB in low-current mode. The device includes a bypass loss of 1.8dB.

RF Front End (LNA + PA) Feature Summary

• Optimized for mobile applications with flexible operating voltage support
• Integrated power coupling for efficient operation
• Multiple Wi-Fi and Bluetooth TX states for energy efficiency

RF Front End (LNA + PA) Applications

• Smartphones
• Tablets
• Computing devices
• VR/AR glasses
• Wi-Fi routers

RF Front End (LNA + PA) Procurement Notes

Verify the specific suffix (e.g., SR vs TR13) against official Qorvo documentation to ensure correct packaging and pinout compatibility. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Check for any recent PCN notifications regarding substrate supplier or assembly site changes that may affect long-term sourcing stability.

RF Front End (LNA + PA) Selection Notes

Select this component when designing for 2.4 GHz Wi-Fi 7 environments requiring compact form factors. Ensure the system power supply accommodates the 3.0V to 5.0V range. Consider the thermal dissipation capabilities if operating near maximum output power limits. Verify interface compatibility with the host processor for control signals.

RF Front End (LNA + PA) Part Context

This part belongs to Qorvo's Hastings series of front-end modules, which are engineered for next-generation connectivity. It represents a shift towards highly integrated solutions that combine PA and LNA functions into a single package to reduce board space. This integration helps simplify design complexity for manufacturers of portable wireless devices.

RF Front End (LNA + PA) Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Direct replacement requires verification of pin-to-pin compatibility and identical RF performance specifications through official Qorvo channels.