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| PartNumber | SI4455-B1A-FM | SI4455-B1A-FMR | SI4455 |
| Description | RF Transceiver +13/-116 dBm sub-GHz transceiver | RF Transceiver +13/-116 dBm sub-GHz transceiver | |
| Manufacturer | Silicon Laboratories | Silicon Laboratories | - |
| Product Category | RF Transceiver | RF Transceiver | - |
| RoHS | Y | Y | - |
| Type | Sub-GHz | Sub-GHz | - |
| Frequency Range | 283 MHz to 960 MHz | 283 MHz to 960 MHz | - |
| Maximum Data Rate | 500 kb/s | 500 kb/s | - |
| Modulation Format | FSK, GFSK, OOK | FSK, OOK | - |
| Supply Voltage Min | 1.8 V | 1.8 V | - |
| Supply Voltage Max | 3.6 V | 3.6 V | - |
| Output Power | 13 dBm | 13 dBm | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Interface Type | SPI | SPI | - |
| Package / Case | QFN-20 | QFN-20 | - |
| Packaging | Tray | Reel | - |
| Series | Si4455 | Si4455 | - |
| Brand | Silicon Labs | Silicon Labs | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Moisture Sensitive | Yes | Yes | - |
| Product Type | RF Transceiver | RF Transceiver | - |
| Factory Pack Quantity | 490 | 2500 | - |
| Subcategory | Wireless & RF Integrated Circuits | Wireless & RF Integrated Circuits | - |
| Tradename | EZRadio | EZRadio | - |
| Unit Weight | 0.000582 oz | 0.000582 oz | - |
| Supply Current Receiving | - | 10 mA | - |
| Supply Current Transmitting | - | 18 mA | - |
| Minimum Operating Temperature | - | - 40 C | - |
| Sensitivity | - | - 116 dBm | - |
| Supply Current Max | - | 30 mA | - |
| Maximum Operating Frequency | - | 960 MHz | - |
| Number of Receivers | - | 1 | - |
| Number of Transmitters | - | 1 | - |