EFR32FG25B121F1152IM56-BR

RF Transceiver ICS Overview

The EFR32FG25B121F1152IM56-BR is a Sub-GHz RF System on Chip (SoC) from Silicon Labs, featuring an ARM Cortex-M33 core. It integrates 1152 kB of Flash memory and 256 kB of RAM within a 56-pin QFN package. The device supports data rates up to 2.4 Mbps with a maximum output power of 16 dBm and a receive sensitivity of -95.3 dBm. Operating voltage ranges from 1.71 V to 3.8 V, with supply currents of 6.28 mA during reception and 186 mA during transmission. It functions reliably across a temperature range of -40°C to +125°C.

RF Transceiver ICS Feature Summary

• Integrates an ARM Cortex-M33 processor for efficient code execution
• Supports FSK, O-QPSK, and OFDM modulation schemes
• Includes integrated power amplifier for robust wireless transmission
• Provides extensive peripheral set including multiple GPIOs

RF Transceiver ICS Applications

• Smart home devices requiring long-range connectivity
• Industrial sensor networks operating in high-temperature environments
• Metering applications needing reliable Sub-GHz communication
• Security systems utilizing robust RF performance

RF Transceiver ICS Procurement Notes

Verify the specific suffix 'BR' indicates reel packaging when ordering. Confirm that the B-series designation aligns with required Sub-GHz frequency bands and regulatory approvals for target markets. Ensure compatibility with existing PCB footprints for the 56-QFN package. Check for updated security advisories related to the Flex Gecko family before finalizing procurement plans.

RF Transceiver ICS Selection Notes

Select this model when high memory capacity is required for complex protocol stacks or large data buffers. The B-series variant is suitable for Sub-GHz applications rather than 2.4 GHz. Consider the 16 dBm output power for extended range needs. Evaluate the 125°C operating temperature rating for harsh industrial deployments where standard commercial grade components may fail.

RF Transceiver ICS Part Context

This component belongs to the Flex Gecko FG25 series, designed for demanding IoT applications. It combines high-performance processing with advanced radio capabilities in a compact form factor. The series targets markets requiring secure, low-power, and long-range wireless connectivity solutions.

RF Transceiver ICS Replacement Considerations

Check for EFR32FG25A121F1152IM56-BR if A-series availability is needed, noting potential differences in certification or specific feature sets between series variants.