The LR1121 is Semtech’s third generation ultra-low power LoRa® transceiver. It provides multi-band LoRa and Long Range - Frequency Hopping Spread Spectrum (LR-FHSS) communication over sub-GHz and 2.4GHz ISM bands as well as satellite S-Band connectivity. The LR1121 is designed to comply with the physical layer requirements of the LoRaWAN® specification released by the LoRa Alliance®, while remaining configurable to meet different application requirements and proprietary protocols.
- Low-power high-sensitivity LoRa/(G)FSK half-duplex RF transceiver
- Worldwide ISM frequency bands support in the range 150 - 960MHz (sub-GHz) and 2.4GHz, as well as 2.1GHz S-Band
- Low noise figure RX front-end for enhanced LoRa/(G) FSK sensitivity
- High power PA path +22dBm in the sub-GHz band
- PA path up to +11.5dBm in the 2.4GHz band
- LR-FHSS modulator
- Integrated PA regulator supply selector to simplify dual power +15/+22dBm with one board implementation (sub-GHz)
- Able to support world-wide multi-region BOM, the circuit adapts to matching network to satisfy regulatory limits
- Fully compatible with SX1261/2/8 devices and the LoRaWAN standard, defined by the LoRa Alliance
- Supports AES-128 encryption/decryption based algorithms
- Handles device parameters such as DevEUI and JoinEUI, as defined by the LoRa Alliance
- Protects confidential information such as encryption keys against unauthorized access
- Stores of NwkKey, AppKey, as defined in the LoRaWAN standard
- Smart meters
- Building automation
- Agricultural sensors
- Smart cities
- Retail store sensors
- Asset tracking
- Street lights
- Parking sensors
- Environmental sensors
- Safety and security sensors
- Remote control applications
- Home automation and appliances
- Radio-controlled toys and drones
- QFN32 5x5mm
Datasheets & Documentation
User Manual Hardware
Explore software downloads, documentation, recommended links, and more resources for this product.
LoRa Developer Portal
A place to learn, connect, collaborate, and find resources to help accelerate your Internet of Things development process.
LR-FHSS Demonstration & Drivers
This package contains drivers and demos for Long-Range Frequency Hopping Spread Spectrum (LR-FHSS) transmission.
L2 Protocol Library
LoRa Basics™ Modem LoRaWAN L2 Library
LoRa Basics Modem is an easy-to-use software library that simplifies the development of LoRaWAN® end nodes.
LR11xx Transceiver Driver
This package proposes an implementation in C of the driver for LR11XX radio component.
LR1121 Transceiver Firmware
Software Development Kit
LoRa Basics Modem SDK contains several simple examples highlighting LoRa Basic Modem features.
Software Development Kit
LR11xx Transceiver SDK
The LR11xx SDK contains several simple examples for LR11xx transceivers.
LR11xx Firmware Updater Tool
Reference implementation of the mechanism to update a the LR11x0 firmware.
Distributor/Catalog Supplier Inventory
View product availability from participating distributors below. Browse all distributers here.
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Explore a wealth of downloadable resources and datasheets to assist with prototyping and production.
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