Overview
The SX1231 is a highly integrated RF transceiver capable of operation over a wide frequency range, including the 433, 868 and 915MHz license-free ISM (Industry Scientific and Medical) frequency bands. Its highly integrated architecture allows for a minimum of external components while maintaining maximum design flexibility.
Features
- High Sensitivity: down to -120dBm at 1.2kbps
- High Selectivity: 16-tap FIR Channel Filter
- Bullet-proof front end: IIP3 = -18dBm, IIP2 = +35dBm, 80dB Blocking Immunity, no Image Frequency response
- Low current: Rx = 16mA, 100nA register retention
- Programmable Pout: -18 to +17dBm in 1dB steps
- Constant RF performance over voltage range of chip
- FSK Bit rates up to 300kb/s
- Fully integrated synthesizer with a resolution of 61Hz
- FSK, GFSK, MSK, GMSK and OOK modulations
- Built-in Bit Synchronizer performing Clock Recovery
- Incoming Sync Word Recognition
- 115dB+ Dynamic Range RSSI
- Automatic RF Sense with ultra-fast AFC
- Packet engine with CRC, AES-128 encryption and 66- byte FIFO
- AEC-Q100 Qualified Part
- Built-in temperature sensor and Low Battery indicator
| Documents | Release Date | Type |  |
|---|---|---|---|
| SX1231 Datasheet | 2018-12-21 | | |
| AN1200.18: Software Implementation of Data Whitening and CRC | 2019-07-12 | | |
| Calculating Radiated Power and Field Strength for Conducted Power Measurements | 2019-04-18 | | |
| FCC Part 15.247 Rules Systems Using Digital Modulation | 2019-04-18 | | |
| Improving the Accuracy of a Crystal Oscillator | 2019-04-18 | | |
| RF Design Guidelines: PCB Layout and Circuit Optimization | 2019-07-03 | | |
| SX1231 Wireless Star Network with FHSS | 2019-07-03 | | |
| XE8000 Driving XE1200 transceivers - Standard API definitions | 2019-07-03 | ZIP | |
| SM1231 Gerber, BOM and Schematics | 2024-02-01 | ZIP | |
| SM1231 RF Module User Guide | 2019-07-03 | | |
| SX1231 RF Module User Guide | 2019-04-16 | | |
| SX1231SKB User Guide | 2019-11-12 | | |
| Documents | Release Date | Type | |
|---|---|---|---|
| Software Releases (Firmware) | 2019-07-03 | ZIP | |
Inventory
| Product | Country | Distributor | Qty | Buy |
|---|
Resources
.png)
Series and Parallel combination of Semtech's…
Integrating Effective Surge Protection to…
Endurance Test for Semtech's SurgeSwitch
Building an End to End Asset Tracking…
HS2950P: The Integrated Load Switch for Your…
Why USB-PD Needs SurgeSwitch Protection
CES 2025 showcased groundbreaking advancements in Semtech’s LoRa® (Long Range) technology, emphasizing its expanding role in Internet of Things (IoT), smart home solutions and industrial applications. Here's a roundup of the most innovative LoRa-based technologies unveiled at the event:
BLOG
CES Post-Show Wrap: LoRa®-Based Innovations at…
The devastation caused by wildfires makes headlines every year and continues to worsen. Wildfires cause not only enormous humanitarian and economic hardship but also have a massive environmental impact. In addition to destroying animal and plant life, wildfires emit between 5 and 30 tons of carbon per hectare. All of the land that burns globally in an average year adds 13 billion metric tons of additional carbon to the atmosphere annually, a significant contribution to climate change.
BLOG
LoRaWAN® Is Fighting Wildfires and Combating…
ABI Research projects that by 2026, LoRa® will be the leading non-cellular LPWAN technology, accounting for over half of all non-cellular connections.ByMay 2024,6.9Mgateways with LoRaIntegrated Circuits (ICs)had been deployed worldwide, supporting over 350 million LoRa-based end nodes. As the Internet of Things (IoT) continues to expand globally and LoRa-enabled applications gain traction across industries, nearly every business sector stands to benefit from the capabilities and advantages offered by connected devices.
BLOG
Could Santa Benefit from LoRa-based Internet of…
Semtech continues to push boundaries in a rapidly evolving world of connectivity, data, and smart technologies. In a recent interview with Newsweek’s Investment Reports, Dr. Hong Hou, President & CEO of Semtech, offered valuable insights into how the company’s cutting-edge technologies, such as LoRa®, cloud solutions, and the AirLink® XR60, are shaping the future of connectivity.
BLOG
How LoRa® Technology from Semtech is Transforming…
In this exclusive interview with Newsweek's Investment Reports, Dr. Hou, President & CEO of Semtech, shares his perspectives, highlighting how Semtech’s innovations are transforming everyday life, enhancing cloud efficiency, and delivering mission-critical solutions across industries. From smart homes to data centers and public safety networks, Semtech is leading the charge in technological transformation. We’re unpacking these insights to show you how these advancements are paving the way for a more connected, data-driven world.
BLOG
Semtech’s Pioneering Role in AI-Driven Cloud…
The automobile industry, a hotbed of innovation since the first motor vehicles hit the roads, has significantly evolved in recent years. This evolution, particularly in automotive Ethernet, is crucial for the industry's progress. Today's cars boasta plethora of features, including autonomous and semi-autonomous driving capabilities, automatic emergency braking, lane departure warning, Omni-View systems (surround-view system, Bird's eye system, etc.) thateliminateblind spots, and a highly interactive and intuitive infotainment system. These innovations rely on a network of advanced cameras and sensors like radar, lidar, or image sensors to collect comprehensive information about the vehicle's physical environment. This data is then seamlessly conveyed to the driver through the dashboard display, alleviating their workload across various driving scenarios.
BLOG
Evolution and Protection of Automotive Ethernet:…Talk With Us Today
Semtech is here to help. When you have questions, our experts have answers.
