Datasheet

Reference DesignRF Silicon
Development Tools
Software
nRF24L01+
Single chip 2.4GHz
Transceiver
PRODUCT BRIEF
PRODUCT SUMMARY
Ultra low power, compact and low cost 2.4GHz transceiver
The nRF24L01+
The nRF24L01+ is a unique wireless solution for compact, battery operated
applications with stringent requirements on battery lifetime and cost. The
transceiver operates in the license free worldwide 2.4GHz ISM band.
It is specically designed for two types of application: PC peripherals and
ultra low power applications such as sports and wellness sensors. For PC
peripherals such as wireless mice, keyboards and media center remotes
it enables high performance and long battery life at a low solution cost.
For sensor applications the ultra low power consumption and advanced
power management enables battery lifetimes up to several years on
a coin cell battery.
Smooth transition from nRF24L01
Improved co-existence performance and longer range
The nRF24L01+ is mechanically, functional and electrical drop in compatible
with the nRF24L01. In addition it offers signicant improvements on co-
existence performance with wide band inference sources like WiFi compared
to nRF24L01. It also adds a 250 kbps air-data rate mode offering -94dBm
sensitivity for longer range operation.
Compact, highly integrated low cost solution
Compact 4x4mm package, low cost external BOM
The nRF24L01+ integrates a complete 2.4GHz RF transceiver, an RF
synthesizer, and full baseband logic including the unique Enhanced Shock-
Burst™ hardware link layer, advanced power management and a high-speed
SPI for the host controller interface. No external loop lters, resonators or
VCO varactor diodes are required, only a low cost ±60ppm 16MHz crystal,
matching circuitry and the antenna.
Ultra low power consumption
A unique combination of high air data rate and advanced
power management
The nRF24L01+ has a unique combination of four features that enable the
implementation of ultra-low power wireless connectivity:
• Sub14mATXandRXactivecurrentsthatpermitcoin-cellbatteryoperation
• Advancedpowermanagementwithpowersavingidlemodescombined
with rapid active mode start-up from idle
• High2Mbpson-airdataratethatallowsthetransceivertominimize
the time it spends in the relatively more power consuming active mode
for a given effective data rate
• EnhancedShockBurst™linklayerminimizesprocessingloadonthe
host microcontroller reducing average current consumption
Block Diagram
Disclaimer: This product brief contains an overview of the silicon feature set and operating parameters and should not be considered as the nal specication. For current and complete product specications,
please refer to the Product specication, available from Nordic Semiconductor. Specications are subject to change without notice. Trademarks are property of their owners.
KEY FEATURES
• DropincompatiblewiththenRF24L01
• Worldwide2.4GHzISMbandoperation
• Upto2Mbpson-airdatarate
• Ultralowpoweroperationandadvancedpowermanagement
• 11.3mApeakTXcurrentat0dBoutputpower
• 13.5mApeakRXcurrentat2Mbpsairdatarate
• 900nAinpowerdownmode
• Onchipvoltageregulator,1.9to3.6Vsupplyrange
• EnhancedShockBurst™hardwarelinklayer
• Automaticpacketassembly(Preamble,AddressandCRC)
• Dynamicpayloadlength
• Selectiveautoacknowledgmentwithpayload
• Autoretransmit
• 6datapipeMultiCeiver™
• FullyaircompatiblewithNordicnRF2401A,02,E1andE2
at 1 Mbps and 250 kbps air data rates
• Lowcostexternal±60ppm16MHzcrystal
• 5Vtolerantinputs
• Lowcostchipinductors
• Compact20-pin4x4mmQFNpackage
APPLICATIONS
• WirelessPCperipherals
• Mice,keyboardsandremotes
• 3-in-onedesktopbundles
• AdvancedMediacenterremotecontrols
• VoIPheadsets
• Gamecontrollers
• Sportswatchesandsensors
• RFremotecontrolsforconsumerelectronics
• Homeandcommercialautomation
• Ultralowpowersensornetworks
• ActiveRFID
• Assettracingsystems
• Toys
SUMMARY OF BENEFITS
• Atrueultralowpowersolutionenabledbyauniquecombination
of low active mode currents, advanced power management and
high air data rate
• Alowcostsolutionisenabledbyhighlevelofintegrationwith
a minimum number of low cost external components
• EnhancedShockBurst™relaxesrequirementsandreducedloadon
the host microcontroller saving on both cost and power consumption
RF Receiver
XC1
XC2
ANT1
ANT2
Enhanced ShockBurst
Baseband Engine
TX FIFOs
RX FIFOs
Radio Control
GFSK
Modulator
SPI
P A
LNA
TX
Filter
RX
Filter
RF Synthesiser Power Management
RF Transmitter Baseband
CSN
SCK
MISO
MOSI
IRQ
CE
VSS
VDD
DVDD
VDD_PA
GFSK
Demodulator
Register map
IREF