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27dBm transceiver aimed at smart metering, industrial apps

Posted: 27 Jun 2014  Print Version  Bookmark and Share

Keywords:Semtech  transceiver  smart meter  front-end module  WMBus 

Semtech Corp. has announced its long-range transceiver platform that the company said is the first device to fully integrate a transceiver and front-end module (FEM) into a single package for smart metering applications such as water, gas and electric metres. According to the company, the SX1238 is an ideal complement to its long-range LoRa technology.

The highest output power available in most integrated transceivers is 20dBm or 100mW. In most smart metering solutions, manufacturers will include a separate front-end module (FEM) to boost the output power and increase the range and performance of the solution. The SX1238 integrates the FEM and transceiver into a single package optimising size and performance, stated Semtech. Output power of 27dBm is typically viewed as the optimal trade-off between range and battery lifetime. Most applications targeting long range and battery operation such as water and gas meters use 27dBm transmit or output power.

The SX1238 supports GFSK, FSK, GMSK and OOK modulation and is designed to support WMBus, IEEE 802.15.4g (SUN), WiSUN, Zigbee NAN, FCC 15.247, EN 300-220 as well as other worldwide RF standards and regulations.

The SX1238 boasts 27dBm maximum output power, -124dBm sensitivity at 1.2Kb/s GFSK and 863-928MHz frequency range. In addition, it offers 100nA sleep current with register retention, bit rates up to 300Kb/s and supports 1.8-3.7V supply range. It is also ETSI and FCC compliant.

The SX1238 (order code: SX1238IMLTRT) is available immediately in production quantities and is priced at $2.20 each in 10,000-piece lots.





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