Semtech LR1121 is a multi-band LoRa® transceiver that delivers ultra-low-power, long-distance LoRa communication. It supports terrestrial ISM band communication in the sub-GHz and global 2.4 GHz spectra, as well as the S-band for satellite connectivity. For various LPWAN use cases, the LR1121 supports any combination of LoRa, (G)FSK, and Long-Range Frequency Hopping Spread Spectrum (LR-FHSS) modulations.

The Semtech LR1121 complies with the physical layer requirements of the LoRa Alliance® LoRaWAN® specification while remaining configurable to meet different application needs and proprietary protocols. This transceiver is suitable for systems that comply with radio standards, including but not limited to ETSI EN 300 220, FCC CFR 47 Part 15, ARIB, and Chinese regulatory requirements.

Features

l Low-power, high-sensitivity LoRa/(G)FSK half-duplex RF transceiverSupports global ISM bands from 150MHz to 960MHz (sub-GHz) and 2.4GHz, as well as the 2.1GHz S-band

l Low noise figure RX front end for higher LoRa/(G)FSK sensitivity

l High-power PA path in sub-GHz band: +22dBm

l PA path in 2.4GHz band: up to +11.5dBm

l LR-FHSS modulator

l Integrated PA regulator power supply selector, simplifying dual-power +15/+22dBm (sub-GHz) operation with a single board

l Capable of supporting multi-region BOM worldwide, with adaptive matching network circuitry to meet regulatory restrictions

l Fully compatible with SX1261/2/8 devices and complies with the LoRaWAN standard specification defined by the LoRa Alliance

l Encryption engine

l Supports AES-128-based encryption/decryption algorithms

l Handles device parameters such as DevEUI and JoinEUI as defined by the LoRa Alliance

l Protects confidential information such as encryption keys from unauthorized access

l Stores NwkKey and AppKey in the manner specified in the LoRaWAN standard