nRF5340 Audio DK Bluetooth LE Audio development kit

Better audio quality, longer playtime, and Auracast™ features.

Our nRF5340 Audio Development Kit (DK) is the recommended platform for Bluetooth LE Audio products and contains everything needed to start development. It supports all Auracast™ features. The kit is configurable and can function as a USB dongle to send or receive audio data from a PC. It can also function as a Business Headset or a True Wireless Stereo (TWS) Earbud. For most use-cases, we recommend using two or more DKs.

Main board components

The three main components of this DK are the nRF5340 SoC, nPM1100 PMIC, and Cirrus Logic’s CS47L63 Audio DSP. The CS47L63’s high-performance DAC and differential output driver are optimized for direct connection to an external headphone load. It is perfect for earbuds with mono-only and direct speaker output.

Powering the kit

The nRF5340 Audio DK is typically powered via USB and has a battery connector for a Li-Ion/Li-Po battery. The current consumption can be measured by using the dedicated current measurement pins. We recommend using Nordic’s Power Profiler Kit II for that.

The new codec

The new “Low Complexity Communications Codec” (LC3) that replaced Bluetooth Classic’s “Low Complexity Subband Codec” (SBC) is also available for this DK. The LC3 codec has superior audio quality compared to SBC, even at about half the wireless data rate. This low data rate is a key factor in minimizing the power consumption of your products.

Download PDF  Download nRF5340 Audio DK product brief [PDF]

Key features

Bluetooth LE Audio

Auracast™ supported

Based on our nRF5340 SoC

2.4 GHz antenna

Two 3.5 mm audio jacks

Cirrus Logic Audio DSP CS47L63

SWF RF connector for direct RF measurements

5 user-programmable buttons 

4 user-programmable LEDs

SEGGER J-Link debugger on board

Pins for measuring power consumption

SD-Card holder for additional storage

Software development kit

nRF Connect SDK

nRF Connect SDK is a common software development kit for Bluetooth Low Energy, Wi-Fi, cellular IoT, Bluetooth mesh, Thread, Zigbee and Matter. It supports all our nRF52, nRF53, nRF70 and nRF91 Series wireless devices.


Desktop Software

Essential software tools to support your wireless design

nRF Connect for Desktop

nRF Connect for Desktop is a cross-platform framework for development applications. It contains applications for testing Bluetooth Low Energy and LTE links, power optimization, programming and more.

nRF Connect for VS Code

nRF Connect for VS Code lets you develop, build, and debug applications based on the nRF Connect SDK using the VS Code Integrated Development Environment (IDE).

nRF Command Line Tools

The nRF Command Line Tools are used for development, programming, and debugging of Nordic Semiconductor's nRF51, nRF52, nRF53 and nRF91 Series devices.