EFR32SG28B322F1024IM68-A

Q: What is the maximum transmit power for the Sub-GHz band?

The maximum transmit power for the Sub-GHz band is +20 dBm.

Q: Does this SoC support Amazon Sidewalk protocols?

Yes, the EFR32SG28 series is explicitly designed to support Amazon Sidewalk applications using Bluetooth LE and Sub-GHz FSK.

$6.31

Description：IC RF TXRX+MCU BLE 68QFN
Series：-
Mfr：Silicon Labs
Package：Tray

SKU:2c3f71f23141 Category: RF Transceiver ICs Brand: Silicon Labs

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Product introduction

Product Detailed Parameters

Description：IC RF TXRX+MCU BLE 68QFN
Series：-
Mfr：Silicon Labs
Package：Tray
Type：TxRx + MCU
RF Family/Standard：Bluetooth, General ISM < 1GHz
Protocol：Bluetooth v5.1
Modulation：2-FSK, 4-FSK, 2-GFSK, 4-GFSK, DSSS
Frequency：902MHz ~ 928MHz, 2.4GHz ~ 2.4835GHz
Data Rate (Max)：2Mbps
Power - Output：20dBm
Sensitivity：-108.6dBm
Memory Size：1MB Flash, 256kB RAM
Serial Interfaces：GPIO, I2C, I2S, IrDA, JTAG, PWM, SPI, UART, USART
Voltage - Supply：1.71V ~ 3.8V
Current - Receiving：4.2mA ~ 10.2mA
Current - Transmitting：12.3mA ~ 98mA
Operating Temperature：-40°C ~ 125°C (TA)
Mounting Type：Surface Mount
Package / Case：68-VFQFN Exposed Pad
Supplier Device Package：68-QFN (8x8)
GPIO：49
Grade：-
Qualification：-

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EFR32SG28B322F1024IM68-A

Overview

The EFR32SG28B322F1024IM68-A is a dual-band wireless SoC featuring an ARM Cortex-M33 core operating at 78 MHz. It integrates 1024 kB Flash and 256 kB RAM within a QFN-68 package. The device supports Sub-GHz (up to +20 dBm) and 2.4 GHz (up to +10 dBm) radio frequencies. Key electrical parameters include a supply voltage range of 1.71 V to 3.8 V, -40°C to +125°C operating temperature, and high sensitivity levels for reliable long-range communication.

Feature Summary

Dual-band radio operation supporting both Sub-GHz and 2.4 GHz bands for versatile connectivity.
Integrated Secure Vault High security kernel providing industry-leading IoT protection against remote and local attacks.
Multi-core architecture with efficient power management suitable for battery-powered terminal devices.

Applications

Amazon Sidewalk compatible devices
Smart door and window sensors
Temperature sensor networks
Independent building connectivity solutions

Procurement Notes

Verify the specific suffix 'A' against the manufacturer's latest datasheet to confirm pinout and functional compatibility. Ensure the QFN-68 package dimensions align with your PCB footprint requirements. Cross-reference the Secure Vault High implementation details with your security protocol needs before finalizing procurement.

Selection Notes

Select this component when dual-band coverage is required for extended range applications like Amazon Sidewalk. The combination of high output power in Sub-GHz and BLE support in 2.4 GHz makes it ideal for bridging indoor and outdoor environments. Consider the 1024 kB memory size for complex firmware requirements.

Part Context

This part belongs to the EFR32SG28 series, designed specifically for secure, low-power wireless applications. It represents a single-die, multi-core solution that integrates RF transceivers, MCU, and security features. The SG28 series targets the growing market for shared network IoT devices requiring robust security and long-range communication capabilities.