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nRF52811-QFAA-R

nRF52811-QFAA-R

MPN: NRF52811-QFAA-R
Nordic Semiconductor ASA
IC RF TxRx + MCU Bluetooth Bluetooth v5.3, Thread 2.4GHz 48-VFQFN Exposed Pad
Active6,573 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The nRF52811-QFAA-R is a versatile Bluetooth 5.3 SoC designed by Nordic Semiconductor to bridge the gap between basic connectivity and high-performance wireless applications. It combines a 64 MHz ARM Cortex-M4 processor with advanced radio features like Direction Finding and IEEE 802.15.4 support, making it an efficient solution for cost-sensitive IoT designs. The device operates across a wide voltage range of 1.7V to 3.6V with integrated power management features to maximize battery life.

Why Choose This Part

This SoC offers a unique balance of a 64 MHz Cortex-M4 core and ultra-low power consumption, featuring peak currents as low as 4.6mA. Its support for Direction Finding provides a hardware-based path for high-accuracy location services that older Bluetooth SoCs lack. Additionally, the inclusion of a 12-bit ADC and 32 GPIOs provides ample peripheral headroom for complex sensor interfacing in a small 6x6mm package.

Applications

Direction Finding and RTLS
Utilizes Bluetooth 5.1 Angle of Arrival (AoA) and Angle of Departure (AoD) capabilities for precise indoor positioning and asset tracking.
Smart Home Sensors
Integrated IEEE 802.15.4 support allows for Thread and Zigbee compatibility in low-power home automation devices like door sensors and thermostats.
Disposable Medical Devices
The low peak current of 4.6mA in TX/RX and small 48-QFN footprint make it ideal for compact, battery-powered clinical monitors.
HID Peripherals
Provides low-latency connectivity for wireless mice, keyboards, and remote controls using Bluetooth Low Energy or 2.4GHz proprietary protocols.

Key Specifications

Type TxRx + MCU
Protocol Bluetooth v5.3, Thread
Frequency 2.4GHz
Mounting Type Surface Mount
Package / Case 48-VFQFN Exposed Pad
Serial Interfaces ADC, PWM, SPI, UART
RF Family/Standard Bluetooth
Supplier Device Package 48-QFN (6x6)

Getting Started

Developers can begin by using the nRF5 SDK or the newer nRF Connect SDK, which supports Zephyr RTOS. Hardware evaluation is best performed on the nRF52840-DK or the specialized nRF52 DK, as the nRF52811 is code-compatible with the larger nRF52 series. Debugging is handled via the standard 2-pin SWD interface using tools like the Segger J-Link.

NRF52811 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package GPIO Interfaces Protocol RF Family/Standard Sensitivity Stock
NRF52811-QFAA-R (this part) VFQFN-48 — ADC, PWM, SPI, UART Bluetooth v5.3, Th.. Bluetooth — 6,573
NRF52811-CAAA-R UFBGA-33 — ADC, PDM, PWM, SPI.. Bluetooth v5.3, Th.. 802.15.4, Bluetooth -104dBm 19,463
NRF52811-QCAA-R7 VFQFN-32 17 ADC, PDM, PWM, SPI.. Bluetooth v5.3, Th.. 802.15.4, Bluetooth -104dBm 1,823
NRF52811-QCAA-B-R7 VFQFN-32 4 PWM, SPI, UART 802.15.4, Zigbee 802.15.4 -96dBm 1,992
NRF52811-QCAA-R VFQFN-32 17 ADC, PDM, PWM, SPI.. Bluetooth v5.3, Th.. 802.15.4, Bluetooth -104dBm 5,603
NRF52811-QFAA-R7 VFQFN-48 — ADC, PDM, PWM, SPI.. Bluetooth v5.3, Th.. 802.15.4, Bluetooth -104dBm 1,053
NRF52811-CAAA-B-R7 UFBGA-33 4 PWM, SPI, UART 802.15.4, Zigbee 802.15.4 -96dBm 1,541

Also Consider

nRF52805-CAAA-R nRFNordic Semiconductor - A more cost-optimized and smaller WLCSP alternative for simple BLE applications that do not require Direction Finding or Thread support.

Categories

Microcontrollers Microcontrollers > Nordic Semiconductor