E220-900m22s is a small module, self-developed based on the new generation of LoRa TM RF chip llcc68, produced by Semtech company. It is suitable for 868mhz and 915MHz LoRa TM wireless modules and uses an industrial 32mhz crystal oscillator.
Origin: Mainland China
Condition: New
Type: Drive IC
Weight: 1.6g
Model Number: E220-900M22S
| 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 Agriculture & Irrigation: The E220-900M22S utilizes LLCC68's superior sensitivity to cover vast farmlands up to 7km. Its low sleep current (180nA) allows soil moisture sensors to operate for years on a single battery, solving the high maintenance cost of remote monitoring.
Industrial Wireless Metering: With a 22dBm transmission power and anti-interference LoRa modulation, this module penetrates multi-layer concrete walls in factories. It ensures reliable data collection from sub-meters to a central gateway without the need for expensive trenching.
Asset Tracking & Cold Chain Logistics: The compact 1420mm size and 1.6g weight make it ideal for integration into portable trackers. It provides long-range location updates in environments where GPS signals might be weak but LoRa connectivity remains robust.
FAQ
Q: What are the primary differences between the LLCC68 chip used in E220 and the SX1262 series?
A: While both are based on the same hardware architecture, the LLCC68 is optimized for cost-efficiency. It supports a maximum spreading factor of SF11 at 125kHz bandwidth, compared to SF12 for the SX1262. However, for most industrial IoT applications requiring 22dBm power and long-range communication, the E220-900M22S offers nearly identical performance at a more competitive price point.
Q: How do I ensure signal integrity when switching between the IPEX antenna and stamp hole interface?
A: The E220-900M22S features a dual-antenna design. When using the stamp hole interface, you must maintain a 50-ohm characteristic impedance on your PCB trace. Avoid running any high-speed digital signal lines directly beneath the RF path. If using the IPEX connector, ensure the cable is securely fastened and not placed near metallic shielding components that could cause impedance mismatch and power loss.
Q: What is the optimal voltage range for the E220-900M22S to maintain a stable 22dBm output?
A: The module operates between 1.8V and 3.7V, but to achieve the full 22dBm (160mW) transmission power, a typical supply of 3.3V is recommended. At this power level, the transient current can reach up to 124mA. Using a low-dropout regulator with at least 250mA output capacity and adding a 10uF decoupling capacitor near the VCC pin is essential to prevent voltage dips during transmission.
Q: Is the SPI communication level of this module 5V tolerant for direct MCU connection?
A: No, the communication level of the E220-900M22S matches its power supply voltage, typically 3.3V. If your host microcontroller operates at 5V, you must use a logic level shifter or a resistor voltage divider to step down the SCK, MOSI, and NSS lines. Connecting a 5V signal directly to the LLCC68 chip may cause permanent hardware failure or significant DC leakage current.
Q: Can I use the E220-900M22S for high-speed data transmission?
A: This module is designed for long-range, low-power communication rather than high bandwidth. The air data rate ranges from 0.018kbps to 300kbps. To maximize reliability at 7km, a lower air data rate should be configured. If your application requires high-speed streaming, you should consider FSK mode, which is also supported by the LLCC68 hardware, though it will significantly reduce the effective communication distance.
