Nordic Bluetooth LE Audio Development Kit nRF5340 DK

Table of contents

The Nordic Semiconductor nRF5340 Audio Development Kit (DK) is the recommended platform for Bluetooth LE Audio products and contains everything needed to start development. It supports all AuracastTm 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.

BLE Audio Essentials | Audio Streaming Quiz | Related Video

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 includes a 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.

Key Features
• Bluetooth LE Audio
• AuracastTm 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
• included battery
• SEGGER J-Link debugger on board
• Pins for measuring power consumption
• SD-Card holder for additional storage

nRF5340 SoC
The Nordic nRF5340 SoC combines a high-performance application processor with a fully programmable ultra-low-power network processor. This dual core architecture allows for optimal power efficiency. The 128 MHz Arm® Cortex®-M33 Application Processor has 1 MB flash and 512 KB of RAM. Which is perfect for handling custom applications and audio codecs, like LC3. The 64 MHz Arm Cortex-M33 Network Processor has 256 KB Flash and 64 KB RAM. It is power optimized to run Nordic’s Bluetooth LE Audio stack.

nPM1100 PMIC
The nPM1100 power management IC has a highly efficient configurable buck regulator. It also includes an integrated battery charger with a charge current up to 400mA. It’s extremely small form factor makes it ideal for size-constrained applications like True Wireless Earbuds.

nRF Connect SDK
The nRF Connect SDK is the software development kit for the nRF5340 SoC, and it has board support for the nRF5340 Audio DK. It supports the development of Bluetooth LE Audio, Bluetooth Low Energy, Thread, and other applications. The Zephyr RTOS, protocol stacks, samples, hardware drivers, and much more are integrated in the nRF Connect SDK

nRF Connect SDK also supports the nRF9160, our LTE-M/NB-IoT/GPS SiP, and the nRF52 Series. It is a common platform for both cellular IoT and short-range development.

• Two 3.5 mm audio jacks for analog in and headphones out
• Five user-programmable buttons and LEDs
• Battery
• SD-Card holder for extra storage if needed
• J4 connector for a NFC antenna
• SEGGER J-Link debugger for programming and debugging
• Connectors to access the analog/digital interfaces, and GPIOs

Additional Information

Hardware Files
Development Tools
Getting Started

Webinar - Introduction to Bluetooth LE Audio

Bluetooth LE Audio Dev Kit Forum

Use this thread to comment or ask any questions about the Bluetooth LE Audio Dev Kit.

Important Dates 

Begin enrollment: August 26, 2022
End enrollment: Oct 31, 2022*
Select Roadtesters: Nov 3 2022
Ship unit: Dec 1 2022
Begin Roadtesting: Dec 7 2022
Element14 follow up: TBD
Post Reviews by: TBD

* Enrollment extended

Terms and Conditions
Click Here to read the Terms and Conditions.

Comment List