EBYTE E22-900M22S uses the wireless module of Semtech SX1262 RF chip. Its special LoRaTM modulation method increases the communication distance. The E22 Series offers exceptional coverage – with Semtech’s SX1262 LoRaTM technology, reliable communications are expected up to 7 kilometers. Experience long-distance communication without compromising reliability.
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Core Parameters
Brand Name: EBYTE
Origin: Mainland China
Condition: New
Type: Drive IC
Model Number: E22-900M22S
Supply Voltage: 1.8 - 3.7 V
Dissipation Power: 160mW
Operating Temperature: -40 - +85 ℃
Application: Computer
Package: SMD
IC: SX1262
Frequency: 850~930MHz
Power: 22dBm
Distance: 7km
Interface: SPI
Weight: 1.5±0.1g
Size: 14 * 20 mm
| RF Parameter | Value | Remark |
|---|---|---|
| Working frequency | 850~930 MHz | - |
| Transmitting power | 22 dBm | Max. Power (160mW) |
| Receiving sensitivity | -147 dBm | - |
| Air data rate | 0.018k~300kbps | - |
| Test distance | 7000m | In open and clear air, with maximum power, 5dBi antenna gain, height of 2m |
| Hardware Parameter | Value | Remark |
|---|---|---|
| Size | 14 * 20 mm | |
| Antenna type | IPEX / Stamp hole | |
| Communication interface | SPI | |
| Package | SMD | |
| Electronic parameter | Min. | Typ. | Max. | Unit | Condition | |
|---|---|---|---|---|---|---|
| Power supply | 1.8 | 3.3 | 3.7 | V | ||
| Communication level | 1.8 | 3.3 | 3.7 | V | ||
| Transmitting current | 114 | 119 | 124 | mA | 22dBm（160mW） | |
| Receiving current | 4.8 | 5.0 | 5.9 | mA | ||
| Sleep current | - | 180 | - | nA | ||
| Operating temperature | -40 | 20 | +85 | ℃ | ||
| Operating humidity | 10 | 60 | 90 | % | ||
| Storage temperature | -40 | 20 | +125 | ℃ |
Application
Smart City & Street Lighting : The E22-900M22S uses SX1262 technology to ensure stable 7km data transmission in dense urban environments. Its 22dBm output power overcomes structural interference, allowing centralized management of street lights to reduce energy waste.
Environmental Monitoring Systems: With a wide operating temperature of -40 to +85 ℃, this SMD module is perfect for outdoor weather stations. It reliably transmits sensor data over long distances while consuming minimal power, extending the battery life of remote nodes.
Industrial Automation & Robotics: The compact 1420mm size allows for easy integration into robotic arms or AGVs. The high-speed SPI interface ensures low-latency control, while LoRa modulation prevents signal loss in electromagnetically noisy factory settings.
FAQ
Q: How do I calculate the power supply requirements for the E22-900M22S during peak transmission?
A: When operating at the maximum 22dBm power setting, the module draws approximately 119mA to 124mA from a 3.3V supply. It is critical to use a power source that can handle these transient current spikes without voltage drops below 1.8V. We recommend placing a low-ESR decoupling capacitor of at least 100uF near the VCC pin to maintain stable performance during the RF ramp-up phase.
Q: Why is a 32MHz TCXO important for this SX1262-based module?
A: The E22-900M22S integrates a high-precision 32MHz Temperature Compensated Crystal Oscillator (TCXO). This component is vital for maintaining frequency stability across the full industrial temperature range of -40 to +85 ℃. Without a TCXO, the frequency might drift during extreme temperature fluctuations, leading to packet loss or synchronization issues in narrow-band LoRa communications.
Q: What is the benefit of the SPI interface over a standard UART connection for this module?
A: The SPI interface provides a direct hardware connection to the SX1262 registers, allowing for much higher data throughput and lower latency compared to UART. It gives engineers granular control over the modulation parameters, spreading factors, and power modes. This is essential for advanced IoT applications where precise timing and custom protocol implementations are required to maximize battery life.
Q: How should the PCB layout be optimized for the 14*20mm SMD package and IPEX connector?
A: To ensure the 50-ohm impedance matching required for optimal 22dBm output, the RF trace from the module to the antenna must be as short as possible. Use a coplanar waveguide design and ensure there is a solid, uninterrupted ground plane directly underneath the RF signal path. When using the IPEX connector, avoid routing high-speed digital signals nearby to prevent crosstalk and radiated emissions.
Q: Is the E22-900M22S compatible with 5V logic microcontrollers?
A: The module's I/O pins operate at a communication level of 1.8V to 3.7V. If you are using a 5V MCU, you must use a bidirectional level shifter to protect the SPI pins (NSS, SCK, MOSI, MISO). Connecting 5V logic directly to the SX1262 will exceed the maximum ratings of the IC, potentially leading to immediate hardware damage or long-term reliability degradation.
