E22-400M22S - SX1268 LoRa 22dBm 7km 410-493MHz Module | EBYTE
Teilenummer: E22-400M22S ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $4.45 | $4,45 |
| 10 | $4.2 | $42,00 |
| 100 | $3.85 | $385,00 |
| 500 | $3.55 | $1.775,00 |
| 1.000 | $3.3 | $3.300,00 |
E22-400M22S Übersicht
What is a LoRa transceiver module? A LoRa (Long Range) transceiver module is a complete sub-system that combines a Semtech LoRa-modulation radio IC, an RF front-end (PA, LNA, filtering, antenna switch), a TCXO or crystal reference, and an SPI host interface on a single PCB. It belongs to the broader family of wireless modules -> sub-GHz transceivers -> RF modules -> RF & wireless modules. Designers use LoRa modules instead of bare LoRa ICs to skip RF layout certification and pass radio regulations in target regions more easily.
Key features of the E22-400M22S include a -147 dBm receive sensitivity that enables long-range links, a wide 1.8 V to 3.7 V supply window that is friendly to Li-ion and 2xAA battery rails, programmable output power from a few mW up to 22.3 dBm, support for both LoRa spread-spectrum modulation and traditional GFSK, and a 32 MHz high-precision TCXO that improves frequency stability under temperature swing. The SX1268 inside also offers an integrated DC-DC converter option for improved transmit efficiency.
The module architecture is built on Semtech's SX1268, the 410-810 MHz variant of the SX126x family, paired with an external power amplifier path to reach the 22 dBm level, an SAW band filter for out-of-band rejection, and an SPI bus for register access from the host MCU. Compatibility with the older SX1276/SX1277/SX1278 commands simplifies migration for existing LoRa designs, while the SX1268 offers lower receive current and higher bit-rate flexibility.
Typical applications include remote metering and automatic meter reading (AMR), agricultural soil and irrigation sensors, industrial wireless telemetry over 433/470 MHz license-free bands, smart home and building automation backhaul, asset tracking in outdoor yards, and long-range drone or robotics telemetry links where a 7 km class range is required.
A key design consideration is antenna selection: at 433/470 MHz a correctly tuned external antenna on the U.FL connector delivers far better range than the on-board chip antenna, and a 50 ohm controlled-impedance feed must be maintained. Designers should also budget for the 100 mA peak supply current during +22 dBm transmit bursts and decouple the supply rail close to the module pins.
This page synthesizes distributor pricing, SX1268 versus SX1278 migration notes, drop-in same-footprint alternatives, and practical antenna and power-rail design guidance not found in the EBYTE datasheet alone, giving engineers a single decision-grade reference for selecting and implementing the E22-400M22S.
Drop-in-Alternativen für E22-400M22S – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
E22-400M30S
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
E22-900M22S
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
E220-400M22S
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
Ra-02SHIELD
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
E22-400M22S Spezifikationen (herstellerveröffentlicht)
| RF Chip | Semtech SX1268 |
| Modulation | LoRa, GFSK |
| Frequency Range | 410 MHz to 493 MHz |
| Transmit Power (max) | 22.3 dBm (170 mW) |
| Receive Sensitivity | -147 dBm |
| Communication Distance | 7 km (line-of-sight, typical) |
| Versorgungsspannung | 1.8 V to 3.7 V |
| Transmit Current (peak) | 100 mA at +22 dBm |
| Receive Current | 6.5 mA |
| Host Interface | SPI |
| Reference Clock | 32 MHz TCXO |
| Antenna Options | On-board chip antenna + U.FL (IPEX) connector |
| Package / Mounting | SMD-22 stamp-hole, 20 x 14 mm |
| Product Weight | 1.5 ± 0.1 g |
| RoHS-Status | Compliant |
E22-400M22S Pin-Konfiguration
| Pin 1 | GND — Ground reference |
| Pin 2 | VCC — Power supply input, 1.8 V to 3.7 V |
| Pin 3 | GND — Ground reference |
| Pin 4 | NRESET — Module reset, active low |
| Pin 5 | DIO3 — SX1268 digital I/O 3, optional TCXO control |
| Pin 6 | DIO2 — SX1268 digital I/O 2 |
| Pin 7 | DIO1 — SX1268 digital I/O 1, interrupt output |
| Pin 8 | BUSY — SX1268 busy indicator, active high |
| Pin 9 | NSS — SPI chip select, active low |
| Pin 10 | SCK — SPI serial clock |
| Pin 11 | MOSI — SPI master out, slave in |
| Pin 12 | MISO — SPI master in, slave out |
| Pin 13 | GND — Ground reference |
| Pin 14 | TXEN — TX enable (transmit mode gate) |
| Pin 15 | RXEN — RX enable (receive mode gate) |
| Pin 16 | ANT — Antenna pad / U.FL feed |
| Pin 17 | GND — Ground reference (RF) |
| Pin 18 | NC — Not connected |
| Pin 19 | NC — Not connected |
| Pin 20 | NC — Not connected |
| Pin 21 | NC — Not connected |
| Pin 22 | GND — Ground reference |
Leistungs- und thermische Eigenschaften
| Leistungsaufnahme | 1.8 V to 3.7 V |
Vom Hersteller veröffentlichte Leistungs- und thermische Parameter für E22-400M22S.
Typische Anwendungen
E22-400M22S ist geeignet für 6 Anwendungs: Industrial Wireless Telemetry / AMR, Agricultural Soil and Irrigation Sensors, Smart Home / Building Automation Backhaul, Outdoor Asset Tracking and Fleet Telemetry, Long-Range Drone / Robotics Telemetry, Wireless Alarm and Security Sensors.
Industrial Wireless Telemetry / AMR
The E22-400M22S fits industrial telemetry and automatic meter reading (AMR) deployments where utility meters and remote sensors report over kilometers of open terrain. Its -147 dBm LoRa sensitivity and +22.3 dBm TX power create a 7 km-class link budget at the 433/470 MHz ISM band, while the 32 MHz TCXO keeps the link stable across industrial temperature swings. The 1.8-3.7 V supply is directly compatible with Li-ion or 2xAA battery packs for pole-mounted, solar-recharged meters. Unlike sub-GHz modules without TCXO, the SX1268 inside maintains frequency accuracy over -20 to +70 C, critical for utility-grade deployments. Reference design: STM32 host MCU on SPI, AES-128 application-layer encryption, AT command firmware for site commissioning.
Empfohlen
Agricultural Soil and Irrigation Sensors
The E22-400M22S is well matched to long-range farm sensor networks covering soil moisture, leaf wetness, weather stations, and irrigation valves across multi-hectare fields. The 7 km line-of-sight range easily spans a typical farm, while the 6.5 mA receive current keeps battery life acceptable for solar-recharged sensor poles. The on-board chip antenna plus U.FL connector let designers choose a low-cost PCB antenna or an external high-gain collinear depending on crop layout. With LoRa SF12/BW125 kHz settings, sensitivity reaches -147 dBm, enough to read sensors at the edge of coverage even in dense foliage. Compared to sub-1 GHz FSK modules, LoRa modulation gives far better resilience to vegetation multipath at low data rates.
Empfohlen
Smart Home / Building Automation Backhaul
For multi-floor buildings and large residential complexes, the E22-400M22S provides a long-range wireless backhaul that links battery-powered door locks, leak sensors, HVAC controllers, and lighting nodes to a central gateway. The -147 dBm sensitivity and 22.3 dBm TX power deliver reliable coverage through concrete walls and across parking structures, where 2.4 GHz Wi-Fi or BLE typically fails. The 1.8-3.7 V supply is friendly to coin-cell or 2xAA battery nodes, and the SPI interface connects easily to an ESP32 or nRF52 host MCU. Because LoRa operates well below the noisy 2.4 GHz band, link robustness is far higher in dense appliance environments. Reference design: ESP32 host running the EByte_LoRa_E22 Arduino library with AES-128 link encryption.
Empfohlen
Outdoor Asset Tracking and Fleet Telemetry
The E22-400M22S is a strong choice for outdoor asset trackers on trailers, construction equipment, livestock collars, and shipping containers where cellular coverage is unavailable or expensive. Its 7 km range and 433 MHz propagation allow tracking tags to report from rural sites where LTE-M would otherwise need satellite fallback. The low RX current of 6.5 mA and short TX bursts at 100 mA peak enable multi-year battery life on AA cells when reporting every few minutes. LoRa spread-spectrum modulation also resists narrowband jamming common in industrial yards. Compared with GPS-only loggers that store data for later download, real-time LoRa reporting gives operations staff immediate visibility into asset location and status.
Empfohlen
Long-Range Drone / Robotics Telemetry
For drones, ground robots, and rovers operating beyond visual line of sight, the E22-400M22S provides a low-latency, long-range telemetry link in the 433/470 MHz band where 2.4 GHz fails. With +22.3 dBm output power and -147 dBm sensitivity, the link budget easily exceeds 5 km in open sky, more than enough for surveying and inspection missions. The module draws only 100 mA peak during TX bursts, so flight batteries are not heavily loaded by the radio. The 32 MHz TCXO holds frequency under vibration and temperature drift critical for moving platforms. Pair the SX1268 with an external low-dropout regulator such as an LP2985 to keep TX power consistent as battery voltage falls during flight.
Empfohlen
Wireless Alarm and Security Sensors
The E22-400M22S fits perimeter alarm and security sensor networks on construction sites, warehouses, and remote infrastructure where wired links are impractical. LoRa's -147 dBm sensitivity and 22.3 dBm TX power mean a single base station can cover an entire industrial yard with battery-powered PIR, door, glass-break, and panic-button sensors. The 1.8-3.7 V supply accommodates a wide variety of battery chemistries including 2xCR2032 coin cells for low-duty nodes. AES-128 application-layer encryption prevents replay and eavesdropping attacks on the radio link, critical for alarm integrity. Compared with older 433 MHz OOK modules, LoRa modulation drastically reduces false alarms from in-band interference.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für E22-400M22S – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | E22-400M30S | E22-900M22S | E220-400M22S | Ra-02SHIELD |
|---|---|---|---|---|---|
| Brand | EBYTE | EBYTE | EBYTE | EBYTE | Ai-Thinker |
| Package | SMD-22 stamp-hole, 20x14 mm | SMD-22 stamp-hole, 20x14 mm (same) | SMD-22 stamp-hole, 20x14 mm (same) | SMD-22 stamp-hole, 20x14 mm (same) | SMD-16, 17x16 mm (different footprint) |
| RF Chip | Semtech SX1268 | Semtech SX1268 | Semtech SX1262 | Semtech LLCC68 | Semtech SX1278 |
| Frequency Band | 410-493 MHz | 410-493 MHz | 850-930 MHz | 410-493 MHz | 410-525 MHz |
| Max TX Power | 22.3 dBm | 30 dBm | 22.3 dBm | 22 dBm | 17 dBm |
| Receive Sensitivity | -147 dBm | -147 dBm | -147 dBm | -129 dBm | -139 dBm |
| Supply Voltage | 1.8 V to 3.7 V | 1.8 V to 3.7 V | 1.8 V to 3.7 V | 2.3 V to 3.6 V | 1.8 V to 3.7 V |
| Host Interface | SPI | SPI | SPI | SPI | SPI |
Wichtigste Unterscheidungsmerkmale
- Higher TX power than the LLCC68-based E220 variant (vs. E220-400M22S)
- Lower cost and higher integration than the 30 dBm E22-400M30S (vs. E22-400M30S)
- Newer SX126x architecture versus legacy SX1278 modules (vs. Ra-02SHIELD)
Designhinweise
At +22.3 dBm TX power the E22-400M22S draws up to 100 mA from the 3.3 V rail during transmit bursts, so place a 10 uF + 100 nF ceramic decoupling pair within 5 mm of the VCC pad. Avoid running the module directly from a coin cell during TX; size the trace to handle 200 mA short peaks or use a regulated LDO. Estimated: at 100 mA peak and 50 ohm antenna, instantaneous TX efficiency is around 35-40%, so expect measurable battery voltage droop if the host supply impedance is high.
Maintain a 50 ohm controlled-impedance microstrip feed from the ANT pad to the U.FL connector, with the ground plane clear underneath the RF trace. Keep digital traces, especially SCK, away from the antenna feed and DIO lines to avoid radiated spurs. The chip antenna on the module is a fallback only - in production use the U.FL connector with an external 433 MHz tuned antenna for the full 7 km range. Estimated: roughly 6-10 dB of range loss can be expected if only the on-board chip antenna is used.
Do not connect the E22-400M22S directly to a 5 V rail; absolute max VCC is 3.7 V and over-voltage will damage the SX1268. Ensure SPI lines from a 5 V MCU are level-shifted to 3.3 V, since the SX1268 I/O is not 5 V tolerant. Do not assert NRESET while the BUSY pin is high; wait for BUSY low to indicate the chip is ready for new commands. Lastly, never operate the module without a load on ANT - either the chip antenna path or the U.FL connector must be terminated.
At +22.3 dBm continuous TX the module dissipates roughly 0.5-0.7 W into the PCB; design with adequate copper thermal relief under the GND pads to spread the heat. For continuous beacon-style TX duty cycles above 10%, monitor the module temperature in production to avoid thermal shutdown. In contrast, receive and idle states draw only 6.5 mA, so thermal management is not a concern for typical duty-cycled sensor nodes. Estimated: at 25 C ambient with 1 sq inch of copper pour, the module stays below 60 C even at 10% TX duty cycle.
Compliance-Informationen
RoHS compliant per JLCPCB and LCSC listings. REACH and halogen-free status not explicitly stated in the EBYTE datasheet - set to unknown. AEC-Q100 not applicable: this is an RF module, not an automotive-qualified IC.
