QM45500SR

RF Front End (LNA + PA) Overview

The QM45500SR is an integrated mobile Wi-Fi front-end module (FEM) designed for 802.11be systems operating in the 5.15GHz to 7.115GHz range. It features a wide supply voltage range of 3.0V to 5.0V. Key electrical parameters include a transmit output power of +19.0 dBm at MCS7 HT20 with -36.5 dB dynamic EVM, and +17.5 dBm at MCS9 VHT160 with -38 dB dynamic EVM. The module provides 29 dB TX gain and a noise figure of 2.3 dB. Receive gain options are 14.0 dB (high gain), 12.0 dB (low current), with 3.0 dB bypass loss.

RF Front End (LNA + PA) Feature Summary

• Integrates a multi-TX state 5/7 GHz Wi-Fi power amplifier, SP3T switch, antenna switch, configurable LNA, and power coupler.
• Optimizes PA performance across a wide 3.0V to 5.0V supply voltage range for mobile applications.
• Includes chip-level filtering for harmonic suppression and 2.4 GHz band rejection to support DBDC operation.
• Enables closed-loop power control and DPD optimization through an integrated power coupler.

RF Front End (LNA + PA) Applications

• IEEE 802.11n/ac/ax/be WLAN systems
• Dual-band wireless LAN infrastructure
• Portable battery-powered devices

RF Front End (LNA + PA) Procurement Notes

Verify component authenticity by cross-referencing the manufacturer part number QM45500SR with official Qorvo documentation. Confirm RoHS3 compliance and MSL level 1 status during intake inspection. Ensure handling procedures respect moisture sensitivity requirements despite the unlimited shelf life classification. Validate package integrity against TR, CT, or Digi-Reel specifications before soldering.

RF Front End (LNA + PA) Selection Notes

Select this FEM for designs requiring high linearity and throughput in Wi-Fi 7 environments. The integrated matching reduces layout area compared to discrete solutions. Consider the specific TX mode requirements for target EVM and power levels. Evaluate the wide voltage tolerance for compatibility with varying battery states in portable equipment.

RF Front End (LNA + PA) Part Context

This component belongs to the QM45500 series of Wi-Fi 7 front-end modules. It represents Qorvo's integration strategy for reducing PCB footprint while maintaining signal integrity. The SR suffix typically denotes the specific tape and reel packaging configuration for automated assembly processes within the broader product family.

RF Front End (LNA + PA) Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Direct replacement requires identical pinout and functional specification matching. Verify thermal and RF performance equivalence if considering alternative vendors.