E22-400M33S User Manual
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1. Overview
1.1 Introduction
E22-400M33S is based on the new generation of LoRaTM RF chip
SX1268 produced by Semtech in the United States as the core of
independent research and development of the maximum power of 2W and
suitable for 433/470MHz SMD LoRaTM wireless module, using
industrial-grade high-precision 32MHz crystal oscillator.
Since the original imported SX1268 is used as the core of the
module, the power amplifier (PA) and low noise amplifier (LNA) are built
in on top of the original one, which makes the maximum transmitting
power reach 2W and further improve the receiving sensitivity, and the
overall communication stability is greatly improved compared with the products without power amplifier and low noise
amplifier. Compared with the previous generation of LoRaTM transceivers, the anti-interference performance and
communication distance have been improved, further widening the gap with products of FSK and GFSK modulation
methods. The product can cover an ultra-wide applicable frequency range from 410 to 493MHz and is backward
compatible with SX1278 and SX1276.
As this module is pure RF transceiver module, it needs to use MCU driver or use special SPI debugging tool.
1.2 Features
Compared with the SX1278 module, the SX1268 module has the significant advantages of lower power
consumption, higher speed and longer distance.
Communication distance up to 16km under ideal conditions.
Built-in PA+LNA, which substantially improves the communication distance and communication stability.
Maximum transmitting power of 2W, adjustable in multiple levels by software.
Support for global license-free ISM 433/470MHz band.
Support multiple modulation modes, LoRaTM/FSK/GFSK/MSK/GMSK/OOK;
Support data transmission rate from 0.018k to 62.5kbps in LoRaTM mode.
FSK mode support for data rates up to 300kpbs.
Downward compatibility with SX1278/SX1276 series RF transceivers.
Large FIFO capacity, supporting 256 Byte data cache.
A new SF5 spread spectrum factor introduced to support dense networks.
support for 3.3 to 5.5V power supply, greater than 5V power supply are available to ensure the best performance.
