Semtech LR1121 Multi-Band LoRa® Transceiver

Semtech LR1121 Multi-Band LoRa® Transceiver is an ultra-low, long-range LoRa transceiver that supports terrestrial ISM band communications in the sub-GHz and global 2.4GHz spectrum, as well as S-Band support for satellite connectivity. For all varieties of LPWAN use cases, the LR1121 supports any combination of LoRa, (G)FSK, and Long Range FHSS (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 requirements and proprietary protocols. 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.

Features

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 worldwide multi-region BOM, the circuit adapts to matching networks to satisfy regulatory limits

Fully compatible with SX1261/2/8 devices and the LoRaWAN standard, defined by the LoRa Alliance
Cryptographic Engine
- 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, and AppKey, as defined in the LoRaWAN standard

Applications

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

Semtech LR1121 Multi-Band LoRa® Transceiver

Features

Applications

Simplified Block Diagram

husseinkey ELECTRONICS®

COMPANY