The Semtech SX1250 is a multi-band sub-GHz RF front-end IC designed to pair with the SX1302 baseband engine in high-performance LoRa/LoRaWAN gateways. It covers any frequency band below 1 GHz, making one hardware design suitable for every regional ISM band.

Key specifications

• Sub-GHz RF front end for LoRa/LoRaWAN gateway designs, companion to Semtech SX1302
• Continuous frequency coverage 150–960 MHz (EU868, US915, AS923, 433/490 MHz, and more)
• Up to +22 dBm on-chip transmit power; integrated differential low-noise amplifier
• Half-duplex operation; handles LoRa and (G)FSK constant-envelope modulation
• Controlled via SPI plus general-purpose DIO lines

The standard RF building block for SX1302-based 8-channel LoRaWAN gateway designs.