Low power Multiband Sub 1-GHz RF Transceiver IC


The Nordic nRF905 is a highly integrated, low power, multiband RF transceiver IC for the 433/868/915MHz ISM (Industrial, Scientific and Medical) band. With an integrated +10dBm PA and sensitivity of -100dBm, the nRF905 is an ideal solution for applications requiring longer-range. The ShockBurst™ hardware protocol accelerator offloads time critical protocol functions from the application microcontroller enabling the implementation of advanced and robust wireless connectivity with low cost 3rd-party microcontrollers.

In summary, the nRF905 integrates a complete 433/868/915MHz ISM RF transceiver, RF synthesizer, and baseband logic, including the ShockBurst™ hardware protocol accelerator supporting a high-speed SPI interface for the application controller. No external loop filter, resonators, or VCO varactor diodes are required, only a low cost crystal, matching circuitry, and antenna.

The nRF905 is available in a 32-pin 5 x 5mm QFN package.


  • Low cost single-chip 433/868/915MHz GFSK RF transceiver IC
  • License-free Sub 1-GHz ISM band operation
  • ShockBurst™ hardware protocol accelerator
  • Low power consumption - 12.5mA RX and 30mA TX (+10dBm)
  • On-air compatible with Nordic nRF9E5 RF SoC


  • Alarm and security systems
  • Keyless entry
  • Home and Industrial automation
  • RF ID

Related Products

Product Brief description
nRF9E5 Multiband Sub 1-GHz RF System-on-Chip (SoC)

Ordering codes


The Nordic nRF905 is a highly integrated, low cost, low power, multiband sub 1-GHz RF Transceiver IC for 433/868/915MHz ISM band operation.

Low power consumption

  • 2.5µA power down mode
  • 9mA Radio TX at -10dBm
  • 30mA Radio TX at +10dBm
  • 12.5mA Radio RX


Multiband Sub 1-GHz Radio

  • License-free 433/868/915MHz ISM band operation
  • GFSK modulation
  • +10, 6, -2, and -10dBm programmable TX output power
  • 50kbps on-air data rate
  • -100dBm RX sensitivity
  • Excellent co-existence performance


ShockBurst™ hardware protocol accelerator

  • Automatic packet assembly
    (Preamble, Address, CRC)
  • Automatic packed detection and validation


Crystal oscillator

  • Supports 4,8,12,16 and 20MHz crystals


MCU Interface

  • SPI


Power supply

  • Internal linear voltage regulator
  • 1.9 to 3.6V supply range


Temperature range of -40 to +80 ºC

Package options

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

The Nordic nRF905 is supported by the following development tools and software:

Product Brief description
nRF905 Evaluation Kit Evaluation Kit for the Nordic nRF905 Sub 1-GHz RF Transceiver IC


Product Specification

Code Name Version
nRF905-PS nRF905 Product Specification 1.5
PCN-008 Change of packet singulation from "Punch" to "Saw" 1.1
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

Reference Layout

Code Name Version
nRF905-DF nRF905 Design files

Application Notes

Code Name Version
nAN400-08 QFN Soldering Reflow Guidelines 1.2
nAN900-04 nRF905 RF and antenna layout 2.1

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-009 Quarterwave printed monopole antenna for 868MHz and 915MHz
nWP-010 Regulatory and Compliance Standards for RF Devices
nWP-011 Sharing crystal with a microcontroller (MCU) 1.1
nWP-015 Crystal Oscillator Design Considerations
nWP-017 Antenna tuning 1.0

Development Kit

Code Name Version
nRF905-EK nRF905 Evaluation Kit