Introduction of LORA chip SX1272IMLTRT

Semtech (Nasdaq: SMTC) recently launched the first product of the new remote RFIC platform, the SX1272, which can extend the wireless transmission distance of the device to 15km.

This device integrates the new LoRa (remote) modulation technology of Shengte Company, which can greatly improve the transmission distance compared with other modulation methods. At present, the maximum transmission distance of the European smart meter transceiver using FSK modulation technology is 1-2 kilometers. Under the same conditions and regulatory restrictions, the transmission distance of SX1272 using LoRa modulation technology can exceed 15km.

SX1272 can be used in industrial control, agriculture/irrigation, intelligent meter reading and sensor network applications. The use of LoRa modulation technology expands the transmission distance of devices, so that the above applications do not need repeaters, greatly simplifying the system design and reducing the cost of headquarters deployment, which makes SX1272 an ideal solution for emerging smart cities, the Internet of Things and machine to machine applications.

The SX1272 with low-cost crystal has a reception sensitivity of - 137 dBm. For the most advanced device using FSK modulation technology in the world, if the same crystal as SX1272 is used, its reception sensitivity is - 115 dBm; If expensive temperature controlled crystal oscillator is used, its reception sensitivity can only be reduced to? To - 125 dBm.

In addition, compared with FSK devices, SX1272 RFIC has a 25 dB advantage in suppressing in band signal interference. Therefore, SX1272 module can be effectively used in industrial, scientific and medical (ISM) frequency bands such as safety and meter reading, because it is not interfered by sub GHz frequency and 4G/LTE signal. This anti-interference capability and high linearity RF front-end make the SX1272 the most reliable and robust solution under strong interference signals.

Jean Paul Bardyn, Technical Director and Vice President of R&D of wireless and sensing products of Suntech, said: "SX1272 and LoRa are a major progress in the field of wireless technology, which will promote the next round of batch deployment of smart cities, sensor networks, the Internet of Things and end-to-end communication. SX1272's remote transmission capability and Shengte's expertise in the field of low power consumption enable the company to occupy a unique market position, thus promoting the rapid development of wireless and sensor product technology departments.".

According to the prediction of industry analysts on a total of 50 billion nodes by 2020, the rapid development of the Internet of Things/end-to-end communication market will provide another major development opportunity for SX1272 using LoRa technology. The IoT/end-to-end communication market urgently needs to improve its physical layer in order to achieve further development?? Distance, low battery power operation, and low-cost batch deployment. LoRa is not only an ideal solution to meet these needs, but also a great complement to 2G/3G GSM in this rapidly growing market.

In addition to LoRa, SX1272 also supports GFSK, FSK, GMSK and OOK modulation technologies, and aims to support WM Bus, IEEE 802.15.4g (SUN), FCC 15.247, ARIB T96/108, EN 300-220 and other global standards and regulations.