BGM121A256V2

RF Transceiver Modules And Modems Overview

The BGM121A256V2 is a Blue Gecko Bluetooth System-in-Package (SiP) module from Silicon Labs, designed for low-power wireless applications. It integrates an ARM Cortex-M4 core operating at 38.4MHz with 256kB flash and 32kB RAM. The module features a 2.4GHz radio supporting Bluetooth v4.2 protocols, delivering up to +8dBm output power and -90dBm sensitivity. It operates within a supply voltage range of 1.85V to 3.8V and supports interfaces including I2C, SPI, UART, and GPIO. The component utilizes GFSK modulation and includes an integrated chip antenna.

RF Transceiver Modules And Modems Feature Summary

• Integrates a 32-bit ARM Cortex-M4 processor with onboard Bluetooth stack and DC-DC converter
• Features a built-in chip antenna eliminating external RF matching requirements
• Supports multiple serial communication interfaces for flexible host connectivity

RF Transceiver Modules And Modems Applications

• Wearable electronics and fitness trackers
• IoT end devices and sensor nodes
• Industrial monitoring and control systems
• Smart home and building automation gateways

RF Transceiver Modules And Modems Procurement Notes

Verify the specific suffix designation when ordering, as packaging formats vary between tray and tape-and-reel configurations across different distributors. Confirm moisture sensitivity level handling procedures are strictly followed during assembly. Ensure the selected variant matches the required interface and memory specifications for the target application design.

RF Transceiver Modules And Modems Selection Notes

Select this module for designs requiring a compact footprint with integrated RF components. The built-in antenna simplifies PCB layout compared to modules with U.FL connectors. Consider the 38.4MHz processing speed sufficient for standard BLE protocol stacks. Verify that the 256kB flash capacity meets firmware storage needs alongside the 32kB RAM allocation for runtime operations.

RF Transceiver Modules And Modems Part Context

This component belongs to the Blue Gecko BGM121 series, representing Silicon Labs' system-in-package solutions for Bluetooth Low Energy applications. It consolidates the EFR32BG radio transceiver and microcontroller into a single surface-mount package. The series targets developers seeking reduced board space and simplified RF design processes while maintaining robust wireless performance standards.

RF Transceiver Modules And Modems Replacement Considerations

Public confirmed substitute part numbers include BGM121A256V1R and BGM121A256V2R. These variants share identical electrical characteristics and pinouts but differ in shipping packaging formats. Verify compatibility with existing board layouts before substitution.