EFR32SG28B322F1024IM48-AR

Overview

The EFR32SG28B322F1024IM48-AR is a dual-band RF System-on-Chip designed for Amazon Sidewalk applications. It integrates an ARM Cortex-M33 core running at 78 MHz with 1 MB Flash and 256 kB RAM. The device supports Bluetooth Low Energy and Sub-GHz FSK radio operations. Key electrical parameters include a maximum output power of 20 dBm, receiver sensitivity of -108.6 dBm, and a data rate up to 2 Mbps. It operates on a single supply voltage ranging from 1.71 V to 3.8 V, with receive currents as low as 4.2 mA and transmit currents varying by frequency and power level.

Feature Summary

• Dual-band radio operation supporting both Bluetooth Low Energy and Sub-GHz FSK protocols for extended coverage.
• Integrated Secure Vault High security kernel providing protection against remote and local attacks.
• Low-power architecture featuring deep sleep current of 2.8 μA and support for preamble sensing mode.

Applications

• Amazon Sidewalk compatible smart home devices
• Battery-powered door and window sensors
• Temperature and environmental sensors
• Outdoor connectivity solutions for independent buildings

Procurement Notes

Verify the specific suffix 'AR' indicates tape-and-reel packaging when sourcing components. Confirm that the part number matches the exact memory configuration of 1 MB Flash and 256 kB RAM. Ensure compatibility with the required operating temperature range of -40°C to +125°C for your intended deployment environment before finalizing procurement orders.

Selection Notes

Select this component for projects requiring simultaneous BLE and Sub-GHz connectivity within a single chip. It is suitable for applications demanding high security standards via Secure Vault High. Consider the QFN48 package dimensions and surface-mount requirements during PCB layout. Evaluate the power consumption profiles against battery life expectations for long-term IoT deployments.

Part Context

This model belongs to the Silicon Labs EFR32xG28 family, specifically optimized for Amazon Sidewalk ecosystems. It combines the processing capabilities of the Cortex-M33 with versatile wireless interfaces. The series emphasizes low energy consumption and robust security features for consumer IoT hardware.

Replacement Considerations

Check for other variants within the EFR32SG28 family that may offer different packaging options or slight memory variations. Verify if older generation parts like EFR32MG24 provide sufficient performance for non-Sidewalk specific applications.

FAQ

What is the maximum transmit power supported by this SoC?

The device supports a maximum output power of 20 dBm.

Does this component support Amazon Sidewalk protocols?

Yes, it is specifically designed for Amazon Sidewalk applications, supporting both BLE and Sub-GHz FSK.