nRF24L01p(nRF24L01+) with PA and LNA is compatible with nRF24L01+(nRF24L01p),and there are same interface. These are add a power amplifier(PA) circuit and Low Noise Amplifier(LNA) circuit, which could transmit longer distances and more stable performance for industry standard.Increased PA and LNA, RF switch, band pass filter,formed a professional full two-way RF power amplifier, making effective communication for greatly increased.The transmission distance to reach 1000 meter with 2DB Antenna at 250kbps data rate on open area.
There are nRF24L01+ with PA(v1.0), the different version from diff.
You also could reference 2.4G Wireless nRF24L01p detailed parameters.
|Voltage||3-3.6V (recommended 3.3V)|
|Maximum output power||+20 dBm|
|Emission mode current(peak)||115 mA|
|Receive Mode Current(peak)||45 mA|
|Power-down mode current||4.2 uA|
|Operating temperature||-20 - 70 ℃|
|Sensitivity 2Mbps mode in received||-92 dBm|
|Sensitivity 1Mbps mode in received||-95 dBm|
|Sensitivity 250kbps mode in received||-104 dBm|
|PA gain||20 dB|
|LNA gain||10 dB|
|LNA Noise figure||2.6 dB|
|Antenna Gain (peak)||2 dBI|
|2MB rate (Open area)||520 meter|
|1MB rate (Open area)||750 meter|
|250Kb rate (Open area)||>1000 meter|
|Size||38.00mm * 16.46mm * 0.8mm|
|1 GND||2 VCC|
|3 CE||4 CSN|
|5 SCK||6 MOSI|
|7 MISO||9 IRQ|
Please reference to 2.4G_Wireless_nRF24L01p
The Enhanced ShockBurst™ features enable significant improvements of power efficiency for bi-directional and uni-directional systems, without adding complexity on the host controller side. In Enhanced ShockBurst™ it is possible to configure parameters such as the maximum number of retrans- mits and the delay from one transmission to the next retransmission. All automatic handling is done without the involvement of the MCU. it could be for wireless mouse wireless keyboard.
ShockBurst™ makes it possible to use the high data rate offered by nRF24L01 without the need of a costly, high-speed microcontroller (MCU) for data processing/clock recovery.In ShockBurst™ TX, nRF24L01 automatically generates preamble and CRC, it compatable with nRF2401A, nRF24E1, nRF2402 and nRF24E2 communication.
nRF24L01 in a star network configuration.
An nRF24L01 configured as primary RX (PRX) will be able to receive data trough 6 different data pipes, see Figure 4. A data pipe will have a unique address but share the same frequency channel. This means that up to 6 different nRF24L01 configured as primary TX (PTX) can communicate with one nRF24L01 configured as PRX, and the nRF24L01 configured as PRX will be able to distinguish between them. Data pipe 0 has a unique 40 bit configurable address. Each of data pipe 1-5 has an 8 bit unique address and shares the 32 most significant address bits. All data pipes can perform full Enhanced ShockBurst™ functionality. nRF24L01 will use the data pipe address when acknowledging a received packet. This means that nRF24L01 will transmit ACK with the same address as it receives payload at. In the PTX device data pipe 0 is used to received the acknowledge, and therefore the receive address for data pipe 0 has to be equal to the transmit address to be able to receive the acknowledge. See Figure 5 for addressing example.
Example on how the acknowledgement addressing is done.
An nRF24L01 configured as PTX with Enhanced ShockBurst™ enabled, will use the ShockBurst™ feature to send a packet whenever the microcontroller wants to. After the packet has been transmitted, nRF24L01 will switch on its receiver and expect an acknowledgement to arrive from the terminating part. If this acknowledgement fails to arrive, nRF24L01 will retransmit the same packet until it receives an acknowledgement or the number of retries exceeds the number of allowed retries given in the SETUP_RETR_ARC register. If the number of retries exceeds the number of allowed retries, this will show in the STATUS register bit MAX_RT and gives an interrupt. Whenever an acknowledgement is received by an nRF24L01 it will consider the last transmitted packet as delivered. It will then be cleared from the TX FIFO, and the TX_DS IRQ source will be set high. With Enhanced ShockBurst™ nRF24L01 offers the following benefits:
nRF24L01+ V2.0 module using external 2DB antenna that means need a SMA connector head antenna.
Includes important code snippet. Demo code like :
Includes important code snippet. If you want transmission max distance, the nRF24L01 Demo For Arduino code for Arduino should change one line:
The Demo pins to Arduino as below:
GND – GND, VCC – 3.3V, CS – D8, CSN – D9, SCK – D10, MOSI – D11, MISO – D12, IRQ – D13
Download the code below into the TX Arduino (transmit) — This code will drive the nRF24L01 module to send out data form 0×00 to 0xFF .
Note: between the write TX_FIFO and clear RX_DR or TX_DS or MAX_RT interrupt flag, would better not serial print anything, which maybe case ACK failed.
Download the code below into the RX Arduino (receive) – This code will drive the nFR24L01 module to receive the data that transmit form the TX module and print it to serial port.
Note: clear RX_FIFO must bellow Read_FIFO
The projects and application examples. These file are a sample code for your reference.