NRF52811-QFAA-R7

RF Transceiver ICS Overview

The nRF52811-QFAA-R7 is a Bluetooth Low Energy System on Chip from Nordic Semiconductor, built around a 64 MHz ARM Cortex-M4 core. It features 192 KB of Flash memory and 24 KB of SRAM. The integrated 2.4 GHz transceiver supports Bluetooth LE 5.3, Thread, and proprietary protocols with a maximum data rate of 2 Mbps. It offers +4 dBm output power and optimized receive sensitivity, including -104 dBm for Long Range mode. Operating voltage ranges from 1.7 V to 3.6 V.

RF Transceiver ICS Feature Summary

• Supports Bluetooth Direction Finding for high-precision indoor positioning applications
• Integrated adaptive power management system ensures exceptionally low energy consumption
• Drop-in compatible with the nRF52810 SoC across multiple package variants

RF Transceiver ICS Applications

• Bluetooth Direction Finding beacon and locator systems
• Thread-based smart home networking devices
• Compact IoT sensors requiring minimal footprint
• BLE mesh network nodes

RF Transceiver ICS Procurement Notes

Verify the specific suffix 'QFAA-B' against the requested model, as official documentation lists 'nRF52811-QFAA-B-R7' as the standard part number for this configuration. Confirm that the 'B' variant meets all functional requirements before procurement. Ensure compatibility with the nRF52840 DK for initial development phases, noting that the development kit does not support Bluetooth Direction Finding features.

RF Transceiver ICS Selection Notes

Select this component when Bluetooth Direction Finding capabilities are required within the constrained nRF52810 form factor. It provides superior RX sensitivity compared to other nRF52 series SoCs. Consider the QFN48 package for designs needing 32 GPIOs. Verify that the application logic fits within the 192 KB Flash and 24 KB RAM limits while utilizing the 12-bit ADC and standard digital interfaces.

RF Transceiver ICS Part Context

The nRF52811 serves as an advanced member of the nRF52 platform, bridging the gap between basic connectivity and complex positioning needs. It shares the same physical footprint and pinout as the nRF52810, allowing for easy migration in existing designs. This SoC enables manufacturers to add Direction Finding and Thread support without redesigning the hardware layout or increasing the bill of materials significantly.

RF Transceiver ICS Replacement Considerations

The nRF52810 is a confirmed drop-in replacement if Direction Finding functionality is not required. Both components share identical package dimensions and pinouts. Developers must verify software compatibility, as the nRF52811 requires specific SDK updates to utilize its enhanced radio features and protocol stack.