Chip detail ：

XN297 is a high performance, low cost, low power, small size 2.4GHz wireless transceiver. It integrates a full data processing and control function so that it can form a complete wireless communication system with a simple MCU. XN297 maximum transmit power 11dBm, sensitivity up to -88dBm, support smaller package QFN3*3.

XN297 2.4G RF chip

Greater power, farther distance

Working characteristics

Work frequency 2400~2483MHz

The channel interval is 1MHz@1Mbps 2MHz@2Mbps

Data rate 1/2Mbps

Transmit power -11~11dBm

Receiver sensitivity -88dBm@1Mbps -85dBm@2Mbps

The frequency of crystal oscillator is 16MHz + 60ppm

Operating voltage 2.0~3.6V

The working temperature is -40~85 centigrade

application area

Wireless mouse and wireless keyboard

Wireless game device and wireless toy

Intelligent TV remote controller

Active wireless label

Smart home and security system

Industrial sensors and wireless industrial control equipment

State current

Dormant 2uA

Standby I 50uA

Launching 23mA@8dBm 15mA@1dBm

Receive 14mA@1Mbps 15mA@2Mbps

Typical peripheral components

Inductance 3 / capacitor 9 / resistance 2

16MHz crystal 1

Communication characteristics

Integrated link layer data processing and status control

The longest 64 bytes of data packets are transmitted at one time

Multilevel FIFO store data

SPI interface rate is highest 8Mbps

General and enhanced mode of communication

Automatic answering and automatic repeat function

GFSK modulation

RSSI detection function

Address identification and CRC check

Support for one to many networking

The PCB microstrip antenna supports 50 meter transmission

Product form

QFN20L (0404/0303)

COB

Package pin

Hardware and software design support

PCB / / BOM cost reduction of microstrip antenna

Frequency hopping algorithm / power optimization / enhancement mode

internal structure