NRF21540-QDAA-R7

Overview

The NRF21540-QDAA-R7 is a Bluetooth range extender RF front-end module (FEM) from Nordic Semiconductor, designed for the 2.36 GHz to 2.5 GHz frequency band. It integrates a power amplifier and low-noise amplifier to enhance link robustness for nRF52 and nRF53 series SoCs. Key electrical parameters include a receive gain of 13 dB, a noise figure of 2.5 dB, and an operating supply voltage of 3 V with a current consumption of 115 mA. The device supports a P1dB compression point of -13.5 dBm and operates within a temperature range of -40°C to +105°C. It is housed in a QFN-16 package.

Feature Summary

• Integrates power amplifier and low-noise amplifier to extend wireless transmission range
• Supports antenna diversity through two dedicated antenna ports
• Enables dynamic transmit power adjustment via SPI or GPIO interfaces
• Optimized for professional lighting applications with extended industrial temperature qualification

Applications

• Smart home devices requiring extended coverage
• Asset tracking systems needing reliable long-range connectivity
• Professional lighting equipment operating in varied environments
• Industrial applications utilizing Bluetooth Mesh or Thread protocols

Procurement Notes

Verify that the suffix 'R7' corresponds to the specific reel packaging configuration required for automated surface-mount assembly processes. Confirm compatibility with the target nRF52 or nRF53 system-on-chip architecture before finalizing procurement orders. Ensure adherence to moisture sensitivity level handling procedures during storage and soldering to prevent component damage.

Selection Notes

Select this component when designing systems based on Nordic nRF52 or nRF53 series SoCs that require significant range extension beyond standard capabilities. It is suitable for applications demanding high link budget improvements and support for multiple wireless protocols including Bluetooth LE, Zigbee, and Thread within the 2.4 GHz ISM band.

Part Context

This part belongs to the nRF21540 family of radio front-end modules. It serves as a complementary device to Nordic's multiprotocol wireless SoCs, providing enhanced signal integrity and output power. The module simplifies design by integrating necessary RF components into a compact footprint, reducing bill-of-materials complexity for range-critical IoT products.

Replacement Considerations

The nRF21540-QDAA-R is a compatible alternative variant within the same product family offering identical functional specifications.