8-channel ANT™ Connectivity IC with USB interface


The nRF24AP2-USB is a highly integrated single-chip 8-channel ANT™ Connectivity IC. It includes an ultra low power 2.4GHz RF transceiver and a fully embedded enhanced ANT protocol stack, and features a full-speed USB 2.0-compliant host interface. With an integrated voltage regulator enabling it to be powered directly from the USB VBUS, the nRF24AP2-USB is ideally suited for ultra-compact ANT USB dongles or built-in applications where a USB host interface is more suitable than the serial interface provided by the Nordic nRF24AP2-8CH.

The integrated 2.4GHz RF transceiver core is based on the nRF24L01+ and provides significant sensitivity and co-existence performance improvements compared to the previous generation nRF24AP1. The on-chip ANT protocol stack features full compatibility for all ANT+ profiles, and includes advanced features such as: Scanning Channel for applications demanding low latency, Improved Channel Search for less impact on active channels, Per channel-based TX Output Power Control, and a Frequency Agility mode for improved co-existence performance.

The nRF24AP2-USB is available in a 5 x 5mm 32-pin package.


  • Single-chip ANT™ Connectivity IC with fully integrated radio and protocol stack
  • Full-speed USB 2.0-compliant host interface ideal for compact USB dongles
  • Full compatibility with ANT+ profiles supporting multivendor interoperability
  • Low cost BOM – powers directly from the VBUS and supports use of a single, low cost 16MHz ±50ppm crystal


  • Compact ANT/ANT+ USB dongles
  • Embedded ANT/ANT+ wireless connectivity






Related Products

Product Brief description
nRF24AP2-8CH 8-channel ANT Connectivity IC
nRF24AP2-1CH 1-channel ANT Connectivity IC

Ordering codes



Single-chip 8-channel ANT™ Connectivity IC with embedded radio, protocol stack and full-speed USB 2.0 interface.

Low power consumption

  • 500µA suspend state
  • 20mA Active TX peak current at 0dBm
  • 22mA Active RX peak current


2.4GHz Radio

  • 2.4GHz ISM band operation
  • GFSK modulation 1MHz bandwidth
  • 0, -6, -12, -18dBm programmable TX output power
  • 1Mbs on-air data rate
  • -85dBm RX sensitivity at 1Mbps
  • Excellent co-existence performance
  • Compatible with 16MHz ±50ppm crystal

Embedded ANT™ protocol stack

  • Supports up to 8 concurrent ANT channels
  • Advanced network topologies:
    peer-to-peer, star, tree and practical mesh
  • Broadcast, Acknowledged and Burst message types
  • Programmable message rate from 0.5 to 190Hz
  • Up to 20kbps burst transfers rate
  • Per channel TX output power control
  • Supports ANT Frequency Agility
  • Continuous Scanning mode for low latency
  • Improved channel search
  • Channel ID management pairing efficiency
  • Proximity search for simple pairing


  • 16MHz XO


Host Controller Interface

  • Full-speed USB 2.0


Power supply

  • Internal linear voltage regulator
  • 4.0 to 5.25V supply range
  • Powers directly from VBUS

Temperature range of -40 to +80 ºC

Package options

  • 32-pin 5 x 5mm QFN
Development tools and Software


The nRF2AP2-USB is supported by the following development tools and software:

Product Brief description
nRFready ANT USB dongle ANT USB dongle reference design with nRF24AP2-USB
Reference Designs


The nRF2AP2-USB is supported by the following reference designs:

Product Brief description
nRFready ANT USB Dongle ANT USB dongle reference design with nRF24AP2-USB

Product Specification

Code Name Version
nRF24AP2-USB-PS nRF24AP2-USB Product Specification 1.0
PCN-059 Product Change Notification - Cu as additional bond wire option 1.0
PCN-075 Product Change Notification 1_0
PCN-094 Change on outer box container for trays and 7” reels 1.0


PC software
To aid your product development, Nordic also offers a range of tools enabling you to interact with and monitor your product


Code Name Version
ANTUSB-WIN ANT-USB Windows Package 2.3.1
ANTware-SW ANTware II 4.100

Reference Layout

Code Name Version
nRF24AP2-USB-DF nRF24AP2-USB Reference Layout 1.1

Application Notes

Code Name Version
nAN24-08 nRF Performance Test Instructions 1.1
nAN400-08 QFN Soldering Reflow Guidelines 1.2

White Papers

Code Name Version
nWP-001 Benefits of Total Integration of Large RF Circuits
nWP-005 Introduction to wireless networks
nWP-006 nRF Performance Test Guidelines 1.0
nWP-008 Quarterwave printed monopole antenna for 2.4GHz
nWP-010 Regulatory and Compliance Standards for RF Devices
nWP-011 Sharing crystal with a microcontroller (MCU) 1.1
nWP-013 Tuning the nRF24xx matching network
nWP-014 USB Certification Guidelines
nWP-015 Crystal Oscillator Design Considerations
nWP-017 Antenna tuning 1.0

User Guides

Code Name Version
ANTmes-UG ANT Message Protocol and Usage 5.0
ANTware-UG ANTware II User's Guide 1.1