EByte E22-900M22S SX1262 900MHz LoRa Module SMD w/ TCXO

The module communicates via a 3.3V SPI interface. Connect the module's SCK, MISO, MOSI, and NSS pins to corresponding SPI pins on your host MCU (e.g., Arduino, STM32, ESP32). Ensure both devices share a common ground and that the host logic levels are 3.3V. Use the provided EByte library or Semtech's SX1262 driver to send AT-like commands over SPI for configuration, setting frequency, power, and LoRa parameters before transmitting or receiving data packets.

The Temperature-Compensated Crystal Oscillator (TCXO) provides exceptional frequency stability compared to a standard crystal oscillator. As temperature changes from -40°C to +85°C, the TCXO minimizes frequency drift, ensuring the radio remains precisely tuned to its designated channel. This is critical for maintaining a reliable communication link in outdoor or industrial environments with large temperature swings, preventing packet loss due to frequency offset between transmitter and receiver.

Use a 900MHz antenna with an IPEX (U.FL) connector or solder directly to the provided stamp holes for a PCB trace antenna. The module's impedance is 50 ohms. For best range, select an antenna with appropriate gain (e.g., 3dBi whip) considering your radiation pattern needs. Ensure the antenna is impedance-matched to 900MHz to avoid reflected power that can damage the RF front-end. The connection is typically made via the IPEX port, requiring a compatible IPEX-to-SMA pigtail if using an external antenna with an SMA connector.

To achieve the specified 180nA sleep current, you must correctly place the module into its deep sleep mode via the SPI command interface. Before issuing the sleep command, ensure no SPI transactions are pending. The host microcontroller should then also disable its own SPI peripheral outputs to prevent leakage. Power the module from a clean 3.3V rail, as any voltage regulator quiescent current will add to the total system sleep consumption. Wake-up is typically triggered by a configured GPIO pin or a periodic timer internal to the SX1262.