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2.4Ghz RF Transmitter & Receiver

2.4G wireless transceiver module with FSK/GFSK modulation, and 4-Pin SPI interface

  • DL-297L
  • 2.4G-2.5Ghz
  • XN 297
  • 0 dBm (1mW)
  • 1.9V~3.6V
  • -88 dBm
  • 100m
  • 11.5*10*2mm
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2.4G Wireless Transceiver Module with 4-Pin SPI interface


DL-297L series modules are low-power, high bandwidth wireless digital communication modules working in the 2.400-2.483ghz world-wide ISM band. These RF modules have the characteristics of low cost, small size, stable work and good product consistency. The maximum air rate can reach 2Mbps. It can be widely used in the situations where wireless connection is needed in daily life. It can also be used in industrial control, access control, attendance, monitoring and security industries.


DL-297LD-C series wireless communication modules can be divided into multiple models according to whether they are equipped with MCU, whether they are equipped with power amplification, data interface and packaging mode. Various models in the same series can communicate with each other. All models are advanced in design, with excellent technical indicators, in line with the parameter requirements of FCC specifications, and can meet the certification needs of customers.


Applications

● Wireless toys, Wireless game handles

● Wireless audio and video transmission, wireless headset

● Child finder and tracker

● Medical devices and remote controls

● Logistics tracking, warehouse inspection, RFID, etc

● Consumer electronic wireless applications

● Low power remote sensing and telemetry

● Wireless sensor network applications


Features

● Efficient 4-pin SPI interface;

● Support 1Mbps, 2Mbps wireless transmission rate, high data throughput;

● Modulation by FSK / GFSK;

● Output power of programmable control: 9-35dbm

● Receiving sensitivity: -88dbm at 2m, and the reliable transmission distance can reach 100m

(open air);

● Programmable carrier frequency: 2400-2483.5mhz, 83 frequency bands are optional;

● Flexible configuration of multiple communication channels, and fast frequency point

switching can meet the needs of frequency hopping system;

● Ultra-low power consumption

● Receiving current<17.5mA

● Emission current < 14mA

● Sleeping current < 3uA;

● Data buffer, burst data transmission, with automatic receiving response and retransmission

processing;

● Support 1-to-6 data communication channel connection;

● Powerful digital features, low-cost MCU can be used to get high-performance RF system;


Download Center

DL-297L Specification V1.0 do


General program configuration process

NO Action Address
1 Power on defaults to sleep mode
2 Clear RX FIFO and status register  0x07
3 Set the rf_cal、bb_cal、demo_cal register 0x1E、0x1F、0X19
4 Open receive channel n(0-5) 0x02
5 Set the address width (3-5 bytes) and address of channel n 0x03、0x0A ~ 0x0F
6 Set working frequency point  0x05
7

Set transmission power, receiving low noise discharge current,and data rate mode

0x06
8

Select communication mode: with automatic retransmission,

retransmission times, retransmission delay, with automatic response

0x04、0x01
9 If it is a static payload, you need to set the payload length 0x11 ~ 0x16
10

If it is a dynamic payload, read the payload according to the dynamic payload length

0x1D、0x1C
11 Set config register, control CE pin to high, enter receiving mode 0x00


Pin Definitions

297L_02


Pin No Pin’s Name Description
1 VDD Power Supply: 3V
2 GND Grounding, common ground with the system
3 IRQ Interrupt signal
4 MOSI SPI data input, MOSI
5 CE Mode chip selection signal
6 CSN SPI chip select signals
7 SCK SPI Clock signals
8 MISO SPI data output, MISO


Size

297L_01

DreamLNK is a professional high-tech enterprise specializing in ISM band micro-power wireless communication technology, can provide you various RF modules and one-stop intelligent IOT solution! Products include 433MHz RF modules, 2.4G modules, Bluetooth modules, Lora modules, Antennas, Remote control, Door/windows sensors, Smoke detectors, etc. welcome to inquire!

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