QM45655SR

RF Front End (LNA + PA) Overview

The QM45655SR is a compact, integrated mobile Wi-Fi Front-End Module (FEM) designed for Wi-Fi 7 (802.11be) systems. It integrates a multi-state 5 GHz to 7 GHz Wi-Fi power amplifier (PA), a single-pole three-throw (SP3T) antenna switch, a bypassable low-noise amplifier (LNA), and a power coupler. The PA operates efficiently within a wide supply voltage range of 3.0 V to 5.0 V. Key performance metrics include a transmit gain of 29 dB (TXH), an LNA noise figure of 1.9 dB, and receive gains of 14.5 dB (high gain) and 12.5 dB (low current). Output power capabilities reach +19.0 dBm at MCS7 HT20 and +17.5 dBm at MCS9 VHT160.

RF Front End (LNA + PA) Feature Summary

• Integrates multi-state 5-7 GHz PA, SP3T antenna switch, bypassable LNA, and power coupler in a compact footprint with built-in matching components.
• Optimized for flexible operation across a wide supply voltage range (3.0 V to 5.0 V) to support diverse mobile application requirements.
• Includes internal chip-level filtering to suppress second and third harmonics, supporting dual-band concurrent (DBDC) operation with 2.4 GHz suppression.
• Features integrated power coupling to enable closed-loop power control and digital pre-distortion (DPD) optimization for enhanced linearity.

RF Front End (LNA + PA) Applications

• Mobile devices supporting Wi-Fi 7 standards
• Desktops and laptops
• Low-power Customer Premises Equipment (CPE)
• AR/VR headsets

RF Front End (LNA + PA) Procurement Notes

Verify the specific suffix 'SR' against official Qorvo documentation to confirm package type and tape/reel specifications. Ensure compatibility with the target PCB layout regarding the integrated matching components. Confirm RoHS3 compliance status if required by regional regulations. Cross-reference the ECCN classification for export control purposes. Validate that the selected variant matches the intended frequency band coverage for 5-7 GHz operations.

RF Front End (LNA + PA) Selection Notes

Select this module when designing for Wi-Fi 7 (802.11be) throughput requirements in space-constrained mobile or portable devices. Consider its wide voltage tolerance if the system design utilizes variable power rails. Evaluate the integrated filtering benefits for reducing external component count and board area. Assess the DPD compatibility if the host processor supports advanced linearization algorithms to maximize output power efficiency.

RF Front End (LNA + PA) Part Context

The QM45655SR belongs to Qorvo's Mobile Wi-Fi FEM portfolio, targeting next-generation wireless connectivity. It represents a shift towards higher integration levels to reduce layout complexity in modern smartphones and tablets. The module addresses the increasing demand for high data rates and spectral efficiency inherent in Wi-Fi 7 deployments while maintaining strict power consumption limits.

RF Front End (LNA + PA) Replacement Considerations

QM45655TR13 is a listed alternative part number for the same functional device. Verify pinout and electrical parameter equivalence before substitution. No other cross-model substitutes are confirmed in public documentation.