SEMTECH LR1121IMLTRT

The LR1121 is an ultra-low power, long range LoRa transceiver that provides support for terrestrial ISM band communications in the sub-GHz and global 2.4GHz spectrum, as well as S-Band support for satellite connectivity. The transceiver is suitable for systems targeting compliance with radio standards including but not limited to ETSI EN 300 220, FCC CFR 47 Part 15, ARIB, and Chinese regulatory requirements. For LPWAN use cases, the LR1121 supports LoRa and (G)FSK modulation on both sub-GHz and 2.4GHz bands, as well as Sigfox modulation on sub-GHz bands, and Long Range Frequency Hopping Spread Spectrum (LR-FHSS) on sub-GHz, 1.9 - 2.1GHz Satellite, and 2.4GHz ISM bands. The LR1121 complies with the physical layer requirements of the LoRaWAN specification released by LoRa Alliance, while remaining highly configurable to meet different application requirements and proprietary protocols.

• Worldwide frequency bands support in the range 150 - 960MHz (sub-GHz), 1.9 - 2.1GHz S-band and 2.4GHz ISM band.
• Low Noise Figure modes for enhanced LoRa/ (G) FSK sensitivity (differential input pins RFI_P/N_LF0)
• High power PA path +22 dBm (pin RFO_HP_LF) and High efficiency PA path +15dBm (pin RFO_LP_LF) for sub-GHz
• High frequency PA path +13dBm (pin RFIO_HF) for 2.4GHz ISM band and S-band, matched to 50Ohm impedance, reducing the overall Bill Of Materials cost
• Integrated PA regulator supply selector to simplify dual power +15/+22dBm with a single board implementation
• Able to support world-wide multi-region BOM, the circuit adapts to satisfy regulatory limits