Lora radio module based Semtech SX1276 chip. 868M and 915MHz used.
N426AS module based Semtech SX1276 chip. 169M, 433M, 868M and 915MHz used, support loRa and FSK modulation. N426AS Module up to 19dBm output power and down to -148dBm sensitivity. SPI port, RF pin, SMD package, 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
169M band: 169 MHz to 170 MHz (China, EU)
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)
If you need N426AS module to support other frequencies, please contact us.
RF rate of N426AS module
FSK: 0 to 300 Kbps
LoRa: 0 to 37.5 Kbps
Lora network or point-to-point long distance transmission.
|Frequency||169M, 433M, 868M, 915M||Hz|
|RF Output Power||19||dBm|
|Current Consumption (TX Mode)||100||mA|
|Current Consumption (RX Mode)||9.9||mA|
|Current Consumption (Standby mode)||0.2||uA|
|Operating Temperature range||-40||80||℃|
N426AS pin description
|1||RF||10||DIO3||Connected to MCU IO port|
|2||GND||11||DIO4||Connected to MCU IO port|
|3||GND||12||DIO5||Connected to MCU IO port|
|4||SW1||Connected to MCU IO port||13||SCK||SPI|
|5||VCC||1.8 - 3.6V||14||MISO||SPI|
|6||NRST||Connected to MCU IO port||15||MOSI||SPI|
|7||DIO0||Connected to MCU IO port||16||NSS||SPI|
|8||DIO1||Connected to MCU IO port||17||SW2||Connected to MCU IO port|
|9||DIO2||Connected to MCU IO port|
N426AS mechanical dimensions
N426AS typical application circuit
N426AS-169M Sx1276 LoRa, 19dBm, 169M - 170MHz
N426AS-433M Sx1276 LoRa, 19dBm, 410M - 440MHz
N426AS-868M Sx1276 LoRa, 19dBm, 860M - 880MHz
N426AS-915M Sx1276 LoRa, 19dBm, 902M - 928MHz