The iM881A-M is a compact, low power, bidirectional radio module for the 868 MHz frequency band using Semtech’s LoRa® modulation technology. The module provides ultra-long range spread spectrum communication and high interference immunity whilst minimising current consumption. Using the iM881A in an application minimizes the need for an expensive and time-consuming RF development. Fast time to market is possible with this pre-qualified module.
The iM881A provides an optimized RF performance for the extreme temperature range. In addition, the iM881A combines a powerful Cortex M0+ controller with the new LoRa® transceiver SX1272 of Semtech Corporation. It has been specifically designed for battery driven devices. It consumes 38 mA in transmit with the maximum output power of +14dBm. Combined with an excellent sensitivity of down to -138 dBm a range of 15 km can be achieved in free space environment. The iM881A-M is pre-certified according the European R & TTE guideline and can be soldered like an SMD component.
The iM881A-M can be ordered with a pre-programmed embedded protocol stack (iM881A-M_LoRaWAN®):
It enables Low Power Wide Area Networks (LPWANs) for Internet-of-Things (IoT) and Machine-to Machine (M2M) applications and supports Activation By Personalization (ABP) or Over The Air (OTA) activation. It comes with the WiMOD LoRaWAN® HCI interface and allows easy configuration.
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Key features highlights:
- Compact module 20.0 x 25.0 x 3.3 mm
- LoRa® modulation technology
- Sensitivity down to -138 dBm
- UART, SPI and I²C interface1
- Digital inputs and outputs
- Analog inputs
- Supply voltage range from 1.8 to 3.6 V
- RF interface matched to 50 Ω
- Output power level up to +15 dBm
- High link budget up to 153 dB
- Range up to 12000m (Line of Sight)
- Pre-Certified according to EN 300 220