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Product Detailed Parameters
- Description：IC RF TXRX+MCU BLE 48QFN
- 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：48-VFQFN Exposed Pad
- Supplier Device Package：48-QFN (6x6)
- GPIO：31
- Grade：-
- Qualification：-
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Overview
The EFR32SG28B320F1024IM48-A is a dual-band RF System-on-Chip from Silicon Labs, designed for Amazon Sidewalk applications. It integrates a Sub-GHz radio and Bluetooth Low Energy with an ARM Cortex-M33 core running at 78 MHz. The device features 1 MB of flash memory and 256 kB of RAM. It supports output power up to +20 dBm at Sub-GHz frequencies and offers high sensitivity. Operating voltage ranges from 1.71 V to 3.8 V, with a wide temperature range of -40°C to +125°C. The component is housed in a 48-QFN package.
Feature Summary
- Dual-band radio operation supporting both Sub-GHz and 2.4 GHz bands for extended coverage.
- Integrated Secure Vault High security kernel for robust IoT data protection.
- Low-power architecture optimized for battery-operated sensor devices.
- High-performance ARM Cortex-M33 processor with DSP and FPU capabilities.
Applications
- Amazon Sidewalk compatible devices
- Smart door and window sensors
- Temperature and environmental sensors
- Outdoor smart home endpoints
Procurement Notes
Verify the specific ordering suffix to ensure the correct package type and temperature grade are selected. Confirm that the intended application aligns with the dual-band specifications required for Sidewalk compatibility. Check for any recent Product Change Notifications regarding assembly or packaging updates before finalizing procurement orders.
Selection Notes
Select this model when long-range Sub-GHz connectivity is required alongside standard BLE protocols. The 1 MB flash capacity supports complex firmware implementations. Ensure the design accommodates the 48-QFN footprint and thermal requirements for the specified operating temperature range. Consider the power consumption profiles for active and sleep modes during system planning.
Part Context
This component belongs to the EFR32xG28 family, representing Silicon Labs' latest generation of wireless SoCs. It succeeds previous generations by offering enhanced security features and improved power efficiency. The SG28 series is specifically tailored for outdoor and long-range IoT applications requiring reliable mesh networking capabilities.
Replacement Considerations
Direct substitutes within the same family include EFR32SG28B320F1024IM68-A, which offers the same electrical specifications but utilizes a QFN-68 package instead of QFN-48. Verify pin compatibility and board layout adjustments if switching between these package variants.
