Semtech’s SX1272 is the first product in a new long-range RFIC platform that boosts the transmission range of the devices to up to 15 kilometres. The device integrates Semtech’s new LoRa (long range) modulation technology to enable drastic range improvements over alternative modulation methods.
The maximum distance today of a smart meter transceiver in Europe utilising FSK modulation is between one and two kilometres. According to Semtech, the SX1272, utilising LoRa operating under the same conditions and regulatory limits, can transmit more than 15 km.
The new chip is designed for industrial control, agriculture/irrigation, smart metering and sensor network applications. The additional range provided by LoRa will eliminate the need for repeaters in these applications, and also makes the device ideal for emerging smart city, Internet of things (IOT) and machine-to-machine (M2M) applications.
The SX1272 achieves receiver sensitivity up to -137 dBm utilising a low-cost crystal, and claims a 25 dB improvement over FSK devices for rejecting in-band interfering signals. This makes it especially effective in ISM-band applications such as security and metering because it provides immunity from sub-GHz frequency 4G/LTE signals.
The device supports GFSK, FSK, GMSK and OOK modulation in addition to LoRa and is designed to support WMBus, IEEE 802.15.4g (SUN), FCC 15.247, ARIB T96/108, EN 300-220 as well as other worldwide standards and regulations.
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