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| Part Number | SI4421-A0-FT | SI4421-A1-FT | SI4421-A0-FTR |
|---|---|---|---|
| Manufacturer | Silicon Labs | Silicon Labs | Silicon Labs |
| Product Status | Not For New Designs | Not For New Designs | Obsolete |
| Type | TxRx Only | TxRx Only | TxRx Only |
| RF Family/Standard | General ISM < 1GHz | General ISM < 1GHz | General ISM < 1GHz |
| Protocol | - | - | - |
| Modulation | FSK | FSK | FSK |
| Frequency | 315MHz, 434MHz, 868MHz, 915MHz | 315MHz, 434MHz, 868MHz, 915MHz | 315MHz, 434MHz, 868MHz, 915MHz |
| Data Rate (Max) | 256Kbps | 256Kbps | 256Kbps |
| Power - Output | 7dBm | 7dBm | 7dBm |
| Sensitivity | -110dBm | -110dBm | -110dBm |
| Memory Size | - | - | - |
| Serial Interfaces | SPI | SPI | SPI |
| GPIO | - | - | - |
| Voltage - Supply | 2.2V ~ 3.8V | 2.2V ~ 3.8V | 2.2V ~ 3.8V |
| Current - Receiving | 11mA ~ 13mA | 11mA ~ 13mA | 11mA ~ 13mA |
| Current - Transmitting | 15mA ~ 24mA | 15mA ~ 24mA | 15mA ~ 24mA |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 16-TSSOP (0.173", 4.40mm Width) | 16-TSSOP (0.173", 4.40mm Width) | 16-TSSOP (0.173", 4.40mm Width) |
| Supplier Device Package | 16-TSSOP | 16-TSSOP | 16-TSSOP |
