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| Part Number | WT12-A-AI3 | WT12-A-AI5 | WT12-A-AI4 | WT32-A-AI3 | WT12-A-AI |
|---|---|---|---|---|---|
| Manufacturer | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Murata Electronics |
| Product Status | Obsolete | Last Time Buy | Obsolete | Obsolete | Obsolete |
| RF Family/Standard | Bluetooth | Bluetooth | Bluetooth | Bluetooth | Bluetooth |
| Protocol | Bluetooth v2.1 +EDR, Class 2 | Bluetooth v2.1 +EDR, Class 2 | Bluetooth v2.1 +EDR, Class 2 | Bluetooth v2.1 +EDR, Class 2 | Bluetooth v2.0 +EDR |
| Modulation | DQPSK, GFSK | DQPSK, GFSK | DQPSK, GFSK | DQPSK, GFSK | - |
| Frequency | 2.4GHz | 2.4GHz | 2.4GHz | 2.4GHz | 2.4GHz |
| Data Rate | 3Mbps | 3Mbps | 3Mbps | 3Mbps | 2Mbps |
| Power - Output | 3dBm | 3dBm | 3dBm | 7dBm | 3dBm |
| Sensitivity | -86dBm | -86dBm | -86dBm | -86dBm | -84dBm |
| Serial Interfaces | PIO, SPI, UART, USB | PIO, SPI, UART, USB | PIO, SPI, UART, USB | I²S, PIO, SPI, UART, USB | - |
| Antenna Type | Integrated, Chip | Integrated, Chip | Integrated, Chip | Integrated, Chip | Integrated, Chip |
| Utilized IC / Part | BlueCore4 | BlueCore4 | BlueCore4 | BlueCore5 | EM351 |
| Memory Size | 8MB Flash | 8MB Flash | 8MB Flash | - | - |
| Voltage - Supply | 3.1V ~ 3.6V | 3.1V ~ 3.6V | 3.1V ~ 3.6V | 1.8V ~ 3.6V | 3.3V |
| Current - Receiving | 70mA | 70mA | 70mA | 4.5mA | - |
| Current - Transmitting | 70mA | 70mA | 70mA | 4.5mA | - |
| 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 | -30°C ~ 85°C | -40°C ~ 85°C |
| Package / Case | Module | Module | Module | Module | Module |
