Overview
The SX1276IMLTRT is a high-performance RF transceiver from Semtech that supports LoRa™ spread spectrum modulation and traditional FSK/OOK modulation. It operates in the 137MHz to 1020MHz frequency range and is compatible with major global ISM bands. Known for its long-range communication, low power consumption, and high sensitivity , this device is a key component for applications such as the Internet of Things (IoT), smart cities, smart metering, industrial telemetry, and environmental monitoring .
The SX1276IMLTRT integrates a -148dBm receive sensitivity and up to +20dBm output power , enabling communication distances of several kilometers or even tens of kilometers in practical applications. It also features patented LoRa modulation technology , providing robust immunity to interference and multipath fading.
Core parameters
Parameter | Numerical |
Operating frequency range | 137MHz ~ 1020MHz |
Modulation method | LoRa™, FSK, GFSK, OOK, MSK, GMSK |
Receive sensitivity | -148dBm (LoRa, bandwidth 7.8kHz, SF=12) |
Transmit power | +20dBm (external PA) |
Communication distance | Typical range is several kilometers, and can reach >10km depending on the environment and antenna configuration |
Data rate | LoRa: 0.018kbps ~ 37.5kbps |
Power supply voltage range | 1.8V ~ 3.7V |
Current consumption | Receive: 10mA |
Interface | SPI bus |
Package | QFN-28 (4mm × 4mm) |
Operating temperature range | –40°C to +85°C |
Package Model | SX1276IMLTRT |
Features
LoRa™ patented modulation technology
It provides ultra-long-distance communication capabilities and has strong anti-interference performance in noisy environments.
High sensitivity and high power
The sensitivity can reach -148dBm and the transmit power can be adjusted to +20dBm, significantly improving the link budget.
Low power operation
With a sleep mode current of only 200nA, it is ideal for battery-powered IoT nodes.
Compatible with multiple modulation modes
Supports LoRa and traditional FSK systems, facilitating compatibility with different protocol stacks and application scenarios.
Wide frequency range
It covers 137MHz to 1020MHz and can be used in global ISM bands (such as 433MHz, 868MHz, and 915MHz).
Miniaturized packaging
It adopts QFN-28 package, which is suitable for compact wireless modules and embedded designs.
Typical application scenarios
Internet of Things (IoT)
Remote sensor networks, agricultural monitoring, smart city nodes.
Smart meter reading
Remote reading of electricity, water and gas meter data.
Industrial telemetry
Factory equipment status monitoring and remote control systems.
Smart Home
Security alarm, environmental sensing, and remote control.
Environmental and energy monitoring
Air quality, meteorological, hydrological monitoring, solar and wind energy systems.
Performance Comparison
Index | SX1276IMLTRT | CC1101 (TI) |
Modulation method | LoRa / FSK / OOK, etc. | FSK/OOK |
Receive sensitivity | -148dBm | -116dBm |
Maximum output power | +20dBm | +12dBm |
Data rate | 0.018 ~ 300kbps | 0.6 ~ 500kbps |
Communication distance | Several kilometers to ten kilometers | Hundreds of meters to 1 kilometer |
Power consumption (sleep mode) | 0.2µA | 0.4µA |
The SX1276IMLTRT is significantly superior to the CC1101 in terms of long distance and low power consumption, and is particularly suitable for IoT applications that require high communication distance and stability.
Manufacturer Profile: Semtech
Semtech is a leading global supplier of analog and mixed-signal semiconductors, particularly renowned for its LoRa™ wireless communication technology . The SX1276IMLTRT is one of its classic LoRa transceiver products, widely used in LoRaWAN networks and various low-power wide-area network (LPWAN) applications.
Why choose SX1276IMLTRT?
● LoRa™ technology support, long distance, strong anti-interference
● High sensitivity (-148dBm) + high power (+20dBm)
● Low power consumption (only 0.2µA in sleep mode) , suitable for battery nodes
● Supports multiple modulation methods , strong compatibility
● Wide operating frequency coverage , suitable for global applications
● Small QFN-28 package , suitable for wireless modules
Frequently Asked Questions (FAQ)
Q1: Does the SX1276IMLTRT support the LoRaWAN protocol?
Yes, the SX1276IMLTRT itself is a LoRa/FSK/OOK communication transceiver and can be used as a physical layer device. When used with an MCU (such as the STM32 or ESP32) running a LoRaWAN protocol stack (such as LoRaMAC-Node), it can access a standard LoRaWAN network and is compatible with mainstream LoRaWAN gateways.
Q2: What is its maximum communication range?
Typical ranges range from several kilometers to over ten kilometers. In open, unobstructed environments, the communication range can exceed 10 kilometers. In urban or indoor environments, the range is typically 2 to 5 kilometers. The actual transmission distance depends on the operating frequency band, spreading factor (SF), bandwidth setting, transmit power, antenna design, and mounting height. At lower bit rates and with appropriate antenna optimization, link coverage can be further improved.
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