RFM90W (868 / 915 MHz)

Transceiver module
Status: Active
Class: 2
(see: FAQ)

Features:

- A complete transceiver
- Small shape
- High output power; +22 dBm (160 mW)
- High sensitivity up to -139 dBm***
- Range > 5000 meter*
- Link-budget: 161 dB**
- SPI interface
- Very stable frequency (PLL)
- Frequency hopping
- Power consumption TX: 118 mA at maximum TX power
- Power consumption RX: 8 mA
- Sleep power consumption: 1.4 mA (0,1 µA sleep)
- Power supply range: 2.4-3.7 V
- OOK, (G)FSK, (G)MSK and LoRa^tm Modulation
- Data rate: up to 300 kbit/s
- Industrial temperature range: -40^oC to +85^oC

Specific (LoRa^tm):

- Frequency band: 868 / 915 MHz
- Spreading Factor: 6 -12
- Bandwidth: 62.5 kHz to 500 kHz***
- Symbols: 64 (6 bits/sym.)
- FEC: 4/5 - 4/8
- Effectieve Bitrate: 146 bps - 37.5 kbps***
- Sensitivity: -111 dBm to -139 dBm***
- Oscillator: XTAL***

Applications:

- Wireless security systems
- Remote control
- Wireless sensors
- Home automation
- AMR (Automatic Meter Reading)
- Long range communication

Product description:

The transceiver module is a complete and efficient RF transceiver, suited for exchanging data with a data rate up to 300 kbit/s.Because of the SMD construction, the module has a very small shape. The module can be controlled directly by a microcontroller with SPI interface. This way the total hardware of the system can be limited to a minimum.

* under specific conditions:

The range depends on the following parameters:

- TX power
- RX sensitivity
- Data rate
- Spreading Factor
- Transmitter bandwidth
- Receiver bandwidth
- Antenna height
- Antenna type
- Radio protocol
- Etc.

** Using 2 modules of the same type and a data rate of 146 bps (LoRa^tm).

*** the LoRa^tm modem specification can be extended with a TCXO (temperature compensated oscillator) and the calibration of the center frequency. When using a TCXO, the specifications are:

- Bandwidth: 7.8 kHz tot 500 kHz
- Effectieve Bitrate: 9 bps - 37.5 kbps
- Sensitivity: -111 dBm tot -148 dBm
- Maximum Link-budget: 168 dB
- Range > 10 kilometer

The maximum Link-budget can be reached with maximum transmit power, a bandwidth of 7.8 kHz, a Spreading Factor of 12 and a Coding Rate (FEC) of 4/5. The effectieve bitrate is 9.14 bits/s.

Contact us for more information.