The integrated Sub-GHz transceiver supports LoRa technology spread spectrum modulation, combining ultra-long range communications and high interference immunity with extremely low current consumption. Receive sensitivity of -136 dBm can be achieved in LoRaWAN protocol compliant mode using a TCXO and bill of materials.
The transmit section offers two integrated power amplifiers. The highly efficient RFO port delivers up to +14.35 dBm for the European region and battery conservation. The high-powered PA_BOOST port delivers up to +18.59 dBm of raw RF power with high-voltage supplies. This combination of high power and high RX sensitivity yields an industry-leading link budget, making it ideal for any application requiring long-range, low-data-rate communications. LoRa technology also provides significant advantages in both blocking and selectivity over conventional modulation techniques, solving the traditional design compromise between range, interference robustness and energy consumption. For maximum flexibility, the user may decide on the spread spectrum modulation bandwidth (BW), spreading factor (SF) and forward error correction rate. Another benefit of the spread spectrum modulation is that each spreading factor is orthogonal; thus, multiple transmitted signals can occupy the same channel without interfering.
This transceiver offers bandwidth options ranging from 125 kHz to 500 kHz with spreading factors ranging from 7 to 12.