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Single Chip 2.4GHz Transceiver


The NRF24L01 is a single chip 2.4GHz transceiver with an embedded baseband protocol engine (Enhanced ShockBurst™), designed for ultra low power wireless applications. The nRF24L01 is designed for operation in the world wide ISM frequency band at 2.400 - 2.4835GHz. An MCU (microcontroller) and very few external passive components are needed to design a radio system with the nRF24L01. The NRF24L01 is configured and operated through a Serial Peripheral Interface (SPI.) Through this interface the register map is available. The register map contains all configuration registers in the NRF24L01 and is accessible in all operation modes of the chip. The embedded baseband protocol engine (Enhanced ShockBurst™) is based on packet communication and supports various modes from manual operation to advanced autonomous protocol operation. Internal FIFOs ensure a smooth data flow between the radio front end and the system’s MCU. Enhanced Shock-Burst™ reduces system cost by handling all the high-speed link layer operations. The radio front end uses GFSK modulation. It has user configurable parameters like frequency channel, output power and air data rate. The air data rate supported by the nRF24L01 is configurable to 2Mbps. The high air data rate combined with two power saving modes makes the NRF24L01 very suitable for ultra low power designs. NRF24L01 Features • Radio - Worldwide 2.4GHz ISM band operation - 126 RF channels - Common RX and TX pins - GFSK modulation - 1 and 2Mbps air data rate - 1MHz non-overlapping channel spacing at 1Mbps - 2MHz non-overlapping channel spacing at 2Mbps• Transmitter - Programmable output power: 0, -6, -12 or -18dBm - 11.3mA at 0dBm output power• Receiver - Integrated channel filters - 12.3mA at 2Mbps -82dBm sensitivity at 2Mbps -85dBm sensitivity at 1Mbps - Programmable LNA gain• RF Synthesizer - Fully integrated synthesizer - No external loop filer, VCO varactor diode or resonator- Accepts low cost ±60ppm 16MHz crystal• Enhanced ShockBurst™ - 1 to 32 bytes dynamic payload length - Automatic packet handling - Auto packet transaction handling - 6 data pipe MultiCeiver™ for 1:6 star networks• Power Management - Integrated voltage regulator - 1.9 to 3.6V supply range - Idle modes with fast start-up times for advanced power management - 22uA Standby-I mode, 900nA power down mode - Max 1.5ms start-up from power down mode - Max 130us start-up from standby-I mode• Host Interface - 4-pin hardware SPI - Max 8Mbps - 3 separate 32 bytes TX and RX FIFOs - 5V tolerant inputs• Compact 20-pin 4x4mm QFN package NRF24L01 Applications • Wireless PC Peripherals• Mouse, 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

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