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| Part Number | BGM121A256V1 | BGM121A256V2 | BGM121A256V1R | BGM123A256V1 | BGM121N256V1 |
|---|---|---|---|---|---|
| Manufacturer | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs |
| Product Status | Obsolete | Active | Discontinued at Digi-Key | Obsolete | Obsolete |
| RF Family/Standard | Bluetooth | Bluetooth | Bluetooth | Bluetooth | Bluetooth |
| Protocol | Bluetooth v4.2 | Bluetooth v4.2 | Bluetooth v4.2 | Bluetooth v4.2 | Bluetooth v4.2 |
| Modulation | GFSK | GFSK | GFSK | GFSK | GFSK |
| Frequency | 2.4GHz | 2.4GHz | 2.4GHz | 2.4GHz | 2.4GHz |
| Data Rate | 1Mbps | 1Mbps | 1Mbps | 1Mbps | 1Mbps |
| Power - Output | 8dBm | 8dBm | 8dBm | 8dBm | 8dBm |
| Sensitivity | -90dBm | -90dBm | -90dBm | - | -90dBm |
| Serial Interfaces | I²C, I²S, SPI, UART | I²C, I²S, SPI, UART | I²C, I²S, SPI, UART | I²C, I²S, SPI, UART | I²C, I²S, SPI, UART |
| Antenna Type | Integrated, Chip | Integrated, Chip | Integrated, Chip | Integrated, Chip | Integrated, Chip |
| Utilized IC / Part | EFR32BG | EFR32BG | - | - | EFR32BG |
| Memory Size | 256kB Flash, 32kB RAM | 256kB Flash, 32kB RAM | 256kB Flash, 32kB RAM | 256kB Flash, 32kB RAM | 256kB Flash, 32kB RAM |
| Voltage - Supply | 1.85V ~ 3.6V | 1.85V ~ 3.8V | 1.85V ~ 3.8V | 1.85V ~ 3.8V | 1.85V ~ 3.8V |
| Current - Receiving | 9mA | 9mA | 9mA | 9mA | 9mA |
| Current - Transmitting | 8.2mA | 8.2mA | 8.2mA | 8.2mA | 8.2mA |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Package / Case | 56-SMD Module | 56-SMD Module | 56-SMD Module | 56-SMD Module | 56-SMD Module |
