Semtech LoRa / FSK 137–1020MHz Long-Range RF Transceiver · +20dBm output · −148dBm sensitivity · TQFN-28 · Standard UAV telemetry chip
| Part Number | SX1276 |
|---|---|
| Manufacturer | Semtech Corporation |
| Modulation | LoRa, FSK, GFSK, MSK, GMSK, OOK |
| Frequency Range | 137 MHz – 1020 MHz |
| Max TX Power | +20 dBm (100mW) |
| RX Sensitivity | −148 dBm (LoRa mode) |
| Package | TQFN-28 (5×5mm, 0.65mm pitch) |
| Supply Voltage | 1.8V – 3.7V |
| Operating Temp | −40°C to +85°C |
| LoRa BW | 7.8 kHz to 500 kHz |
|---|---|
| LoRa SF | SF6–SF12 (spreading factor) |
| Link Budget | 168 dB max |
| TX Current | 120 mA at +20 dBm |
| RX Current | 9.9 mA (continuous RX) |
| Sleep Current | 200 nA |
| Digital Interface | SPI (up to 10 MHz) |
|---|---|
| DIO Pins | 6× DIO (interrupt / status) |
| RFIO | Separate RFO_HF / RFO_LF / RFI pins |
| Crystal | 32 MHz TCXO compatible |
The SX1276 from Semtech is the pioneering LoRa transceiver chip that enabled long-range, low-power drone communication links. Operating across 137–1020 MHz with up to +20 dBm output and −148 dBm receive sensitivity, it delivers a 168 dB link budget — capable of 15+ km range in open air. Used in MAVLink telemetry radios (SiK), OpenLRS, DragonLink and countless drone ground station links.