Lora radio module based Semtech SX1276 chip. 868M and 915 MHz used.

N426AS SX1276 LoRa module up to +20 dBm output power and down to -148 dBm sensitivity. SPI port.

N426AS SX1276 ECAD

N426AS Technical Characteristics

N426AS pin description

SX1276 module leads all pins out for secondary development.

N426AS module based Semtech SX1276 chip. Support loRa and FSK modulation. SPI port, RF pin, SMD package, small size, the module is suitable for SMT production.

N426AS module leads out all pins of sx1276 chip, Rapid development without understanding RF.

SX1276 chip Introduce

The SX1276 incorporates the LoRaTM spread spectrum modem which is capable of achieving significantly longer range than existing systems based on FSK or OOK modulation. At maximum data rates of LoRaTM the sensitivity is 8dB better than FSK, but using a low cost bill of materials with a 10ppm XTAL LoRaTM can improve receiver sensitivity by more than 20dB compared to FSK. LoRaTM also provides significant advances in selectivity and blocking performance, further improving communication reliability. For maximum flexibility the user may decide on the spread spectrum modulation bandwidth (BW), spreading factor (SF) and error correction rate (CR). Another benefit of the spread modulation is that each spreading factor is orthogonal - thus multiple transmitted signals can occupy the same channel without interfering. This also permits simple coexistence with existing FSK based systems. Standard GFSK, FSK, OOK, and GMSK modulation is also provided to allow compatibility with existing systems or standards such as wireless MBUS and IEEE 802.15.4g. More sx1276 information please visit www.semtech.com.

ISM Frequency supported by N426AS module

433M band: 433 MHz to 435 MHz (China, EU)

470M band: 470 MHz to 510 MHz (China)

770M band: 770 MHz to 780 MHz (China)

868M band: 868 MHz to 870 MHz (China, EU, USA)

                       888 MHz to 889 MHz (Australia)

915M band: 902 MHz to 928 MHz (USA)

RF rate of N426AS LoRa module

Module FSK Mode rate: 0 to 300 Kbps

Module LoRa Mode rate: 0 to 37.5 Kbps

APPLICATIONS

LoRa network generally consists of terminal equipment, gateway equipment, network server and application server.

The terminal equipment is generally a small module or a terminal equipment with embedded modules. The transmission distance of such equipment can reach several kilometers, such as water and electricity meters, smoke alarms, pet trackers, logistics locators, etc.

Gateway devices are generally used to receive data sent by terminal devices and send them together. Therefore, they are usually called LoRa concentrators. When data is collected together, they are usually sent together. According to the network sending data, they can be divided into LoRa Ethernet gateway and LoRa-4G gateway.

The network server is generally a server built on the cloud, which is used to process the parameters uploaded by LoRa gateway and nodes, and belongs to the device server.

The application server is a client oriented server that converts data and provides it to users.

N426AS typical application circuit

Download N426AS datasheet

Download sx1276 datasheet

Sx1276 Software example

Ordering information

N426AS-433M     Sx1276     LoRa, 19dBm, 410M - 440MHz

N426AS-868M     Sx1276     LoRa, 19dBm, 860M - 880MHz

N426AS-915M     Sx1276     LoRa, 19dBm, 902M - 928MHz

Files download

N426AS Software code example‍            Download N426AS datasheet            Download SX1276 datasheet