Cost-effective SiliconLabs BLE5.2 module EFR32BG22 for AoA Beacon
RF-BM-BG22A3 is an RF module based on EFR32BG22C224F512GM32-C, one of Gecko family of SoCs from Silicon Labs, with a 32-bit ARM? Cortex?-M33 core with 76.8 MHz maximum operating frequency. It integrates a 38.4 MHz crystal, a matching, an antenna matching, a low-pass filter and a meander line inverted-F PCB antenna. It supports Bluetooth 5.2 low energy, Bluetooth mesh, AoA / AoDand proprietary and can be preprogrammed with a serial interface communication protocol for simple programming. It also has a range of analog and digital interfaces such as PRS, ADC, UART, SPI, I2C, PWM, ISO 7816, IrDA, I2S, EUART and PDM. It features low power consumption, compact size, robust connection distance, and rigid reliability. An integrated PA in the chip enables the module reach up to 6 dBm TX power. 1.27-mm pitch stamp stick package for easy assembling and cost-effective PCB design. RF-BM-BG22A3 is pin-2-pin compatible with BG22A1 and BG22A2.
There are three modules of RF-BM-BG22Ax. All of them are based on Silicon Labs EFR32BG22 series. Because the EFR32BG22 chips are pin-2-pin compatible in package, pins and peripherals, those three modules are pin-2-pin compatible with each other as well.
Module Specification of RF-BM-BG22Ax
Model | Chip Model | Max. CPU Speed | TX Power | FLASH | RAM | Protocol |
BG22A1 | EFR32BG22C112F352GM32-C | 38.4 MHz | 0 dBm | 352 KB | 32 KB | BT5.2 |
BG22A2 | EFR32BG22C222F352GM32-C | 76.8 MHz | +6 dBm | 352 KB | 32 KB | BT5.2 Proprietary |
BG22A3 | EFR32BG22C224F512GM32-C | 76.8 MHz | +6 dBm | 512 KB | 32 KB | BT5.2 Direction finding Proprietary |
Parameters of RF-BM-BG22A3
Chipset | EFR32BG22C224F512GM32-C |
Supply Power Voltage | 1.71 V ~ 3.8 V, recommended to 3.3 V |
Frequency | 2402 MHz ~ 2480 MHz |
Transmit Power | -28.0 dBm ~ +6 dBm (typical: 0 dBm) |
Receiving Sensitivity | -98.9 dBm sensitivity @ 1 Mbit/s GFSK -96.2 dBm sensitivity @ 2 Mbit/s GFSK -106.7 dBm sensitivity @ 125 kbps GFSK |
Power Consumption | 3.6 mA RX current (1 Mbps GFSK) 4.1 mA TX current @ 0 dBm output power 8.2 mA TX current @ 6 dBm output power |
GPIO | 18 |
Crystal | 38.4 MHz |
RAM | 32 KB |
Flash | 512 KB |
Package | SMT Packaging |
Frequency Error | ±20 kHz |
Dimension | 16.5 mm x 11.6 mm x (2.06 ± 0.1) mm |
Type of Antenna | PCB antenna, half-hole interface |
Operating Temperature | -40 ℃～ +85 ℃ |
Storage Temperature | -40 ℃～ +125 ℃ |
