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About nRF24L01+™

PRE-APPROVED PRESS SUMMARY

The nRF24L01+ is a single chip 2.4GHz transceiver that builds on the legacy of Nordic’s proven nRF24L01 wireless solution. The nRF24L01+ is fully drop-in compatible with the nRF24L01, mechanically, functionally and electrically. Enhancements over the nRF24L01 include improved wideband blocking and intermodulation performance. In addition, the inclusion of a fast front-end automatic gain control (AGC) further improves dynamic range and operational robustness in the presence of close proximity interferers. The net result is fewer retransmits, reduced average latency and lower average current consumption in noisy RF environments.

 

The nRF24L01+ features an up to 2Mbps (Mega bits per second) on-air data rate combined with ultra low power (ULP) operation and advanced power management. Peak transmit current is 11.3mA (at 0dB output power) and peak receive current is 13.5mA (at 2Mbps). The transceiver also features a 900nA power down mode, extending battery life. The nRF24L01+ runs at microampere average currents and can be powered from standard coin cell batteries for up to several years (depending on the application).

 

The nRF24L01+ extends the feature set of the nRF24L01 with a 250kbps data rate option that, by providing -94dBm sensitivity, can extend operating range by around 3x compared to operation in 1Mbps mode. This makes the chip an ideal ULP 2.4GHz transceiver for battery-powered RF applications that require maximum operating range without sacrificing battery life. The 250kbps mode is fully air compatible with the 250kbps mode in Nordic’s previous generation nRF2401A transceiver family (nRF2401, nRF2401A, nRF2402, nRF24E1, and nRF24E2), providing a direct migration path to a superior cost, power, and performance solution in existing designs.

 

Supplied in a compact 4x4mm package, the nRF24L01+ integrates a complete 2.4GHz RF transceiver, an RF synthesizer, and full baseband logic including the unique Enhanced ShockBurst™ hardware link layer (minimizing processing load on the host microcontroller reducing average current consumption), advanced power management, and a high-speed SPI for the host controller interface. No external loop filters, resonators or VCO varactor diodes are required, only a low cost ±60ppm 16MHz crystal, matching circuitry and the antenna.

 

The nRF24L01+’s Enhanced ShockBurst hardware link layer features both automatic packet handling and automatic packet transaction handling.

 

Automatic packet handling key features include:

  • Packet assembly
  • Packet detection and validation
  • Dynamic payload length
  • MultiCeiver™ support for up to 6 bi-directional logical links for 1:6 star network topologies

Automatic packet transaction handling key features include:

  • Acknowledgment of received packages
  • Payload in acknowledgment packet
  • Retransmission of lost packages

Typical coin cell battery-powered applications for the nRF24L01+ include wristwatches and wireless sensors (e.g. heart rate monitors and foot pods used in sports products). Prime AA or AAA battery-powered application examples include wireless mice, keyboards, and RF remote controls that would benefit from battery lifetimes of up to one year.

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