| PartNumber | SI4055-C2A-GM | SI4055-B1A-FM | SI4055-B1A-FMR |
| Description | RF Transceiver Sub-GHz transmitter | RF Transceiver TX SubG | RF Transceiver TX SubG |
| Manufacturer | Silicon Laboratories | Silicon Laboratories | Silicon Laboratories |
| Product Category | RF Transceiver | RF Transceiver | RF Transceiver |
| RoHS | Y | - | - |
| Type | EZ Radio | Sub-GHz | Sub-GHz |
| Modulation Format | OOK, FSK | FSK, GFSK, OOK | FSK, GFSK, OOK |
| Supply Voltage Min | 1.8 V | 1.8 V | 1.8 V |
| Supply Voltage Max | 3.6 V | 3.6 V | 3.6 V |
| Supply Current Transmitting | 24 mA | 18 mA | 18 mA |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Package / Case | QFN-20 | QFN-20 | QFN-20 |
| Packaging | Tray | Tray | Reel |
| Brand | Silicon Labs | Silicon Labs | Silicon Labs |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Product Type | RF Transceiver | RF Transceiver | RF Transceiver |
| Factory Pack Quantity | 490 | 490 | 2500 |
| Subcategory | Wireless & RF Integrated Circuits | Wireless & RF Integrated Circuits | Wireless & RF Integrated Circuits |
| Unit Weight | 0.001515 oz | - | - |
| Frequency Range | - | 284 MHz to 960 MHz | 284 MHz to 960 MHz |
| Maximum Data Rate | - | 500 kb/s | 500 kb/s |
| Supply Current Receiving | - | 10 mA | 10 mA |
| Output Power | - | 13 dBm | 13 dBm |
| Interface Type | - | SPI | SPI |
| Sensitivity | - | - 116 dBm | - 116 dBm |
| Number of Receivers | - | 1 Receiver | 1 Receiver |
| Number of Transmitters | - | 1 Transmitter | 1 Transmitter |
| Operating Supply Voltage | - | 1.8 V to 3.6 V | 1.8 V to 3.6 V |