Build Long-Range Wireless Systems: STM32 + CC1125 + 5W PA/LNA Solution
Meta Description: Design robust long-range wireless applications with STM32 microcontroller, TI CC1125 RF transceiver, and 5W PA/LNA. Perfect for Industrial IoT, remote monitoring & telemetry.
Build Powerful Long-Range Wireless Systems with STM32, CC1125, and 5W PA/LNA
Looking for a reliable, long-range wireless solution for industrial applications? The combination of STM32 microcontroller, TI CC1125 RF transceiver, and 5W PA/LNA creates a professional-grade wireless platform that delivers exceptional range and reliability for demanding environments.
This integrated hardware stack provides a complete foundation for long-range wireless communication in the sub-GHz frequency bands. Whether you're designing Industrial IoT systems, remote monitoring equipment, smart agriculture sensors, or telemetry devices, this solution offers the performance needed for critical applications.
1. STM32 Microcontroller – The Intelligent Controller
The STM32 ARM Cortex-M microcontroller serves as the system's brain, handling data processing, protocol management, and peripheral control. With features like low-power operation, multiple communication interfaces (SPI, I2C, UART), and extensive development tools, STM32 provides a flexible foundation for your wireless applications.
2. Texas Instruments CC1125 – High-Performance RF Transceiver
The CC1125 sub-GHz transceiver delivers excellent RF performance with:
High sensitivity (down to -124 dBm)
Programmable output power
Support for multiple modulation schemes (2-FSK, 4-FSK, MSK)
Simple SPI interface for easy STM32 integration
3. 5W Power Amplifier and Low-Noise Amplifier – Range Extension
The external 5W RF power amplifier boosts transmission power to 37 dBm, while the LNA improves receiver sensitivity. This combination significantly extends communication range and enhances signal reliability in challenging environments.
Output Power: 5W (37 dBm) with external PA
Frequency Range: Sub-GHz ISM bands (868 MHz, 915 MHz, etc.)
Microcontroller: STM32 ARM Cortex-M series
Transceiver: TI CC1125
Communication Interface: SPI between STM32 and CC1125
Modulation: 2-FSK, 4-FSK, MSK, OOK
Range: Several kilometers (depending on antennas and environment)
This solution is ideal for:
Industrial IoT and Industry 4.0 – Machine monitoring, predictive maintenance
Remote Sensor Networks – Environmental monitoring, smart agriculture
Telemetry Systems – Utility metering, tank level monitoring
Wireless SCADA Systems – Industrial automation, infrastructure monitoring
Professional Wireless Links – Audio/video transmission, security systems
Start your project quickly with:
Reference designs and schematic examples
STM32 firmware libraries for CC1125
RF layout guidelines for optimal performance
Power management recommendations
Reduced Development Time – Proven hardware combination
Extended Range – 5W output power for maximum distance
Reliable Performance – Robust in noisy RF environments
Scalable Solution – Adaptable to different requirements
Cost-Effective – Optimized BOM for professional applications
Whether you're upgrading existing equipment or designing new wireless products, the STM32 + CC1125 + 5W PA/LNA solution provides the performance and reliability needed for professional applications.
Explore our development resources and technical documentation to begin your long-range wireless project with confidence.