RFM31 Datasheet, PDF (1/137 Pages) –

RFM31 ISM Receiver Module
RFM31
V 1.1
Features
 Frequency Range = 240–960 MHz
 Sensitivity = –118 dBm
 Low Power Consumption
 ● 18.5 mA receive
 Data Rate = 1 to 128 kbps
 Power Supply = 1.8 to 3.6 V
 Ultra low power shutdown mode
 Digital RSSI
 Wake-up timer
 Auto-frequency calibration (AFC)
 Clear channel assessment
 Configurable packet structure
 Preamble detector
 RX 64 byte FIFO
 Low battery detector
 Temperature sensor and 8-bit ADC
 –40 to +85 °C temperature range
 Integrated voltage regulators
 Frequency hopping capability
FSK, GFSK, and OOK modulation
Power-on-reset (POR)
 Programmable RX BW 2.6–620 kHz
 Programmable packet handler
 Programmable GPIOs
RFM31
Applications
Remote control
 Home security & alarm
Telemetry
Personal data logging
Toy control
Tire pressure monitoring
Wireless PC peripherals
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Remote meter reading
Remote keyless entry
Home automation
Industrial control
Sensor networks
Health monitors
Tag readers
The RFM31 is low cost ISM receiver module and offers advanced radio features including continuous frequency coverage from
240–960 MHz , The extremely low receive sensitivity (–118 dBm) ensures extended range and improved link performance.
Additional system features such as an automatic wake-up timer, low battery detector, 64 byte RX FIFO, automatic packet
handling, and preamble detection reduce overall current consumption and allow the use of lower-cost system MCUs. An
integrated temperature sensor, general purpose ADC, power-on-reset (POR), and GPIOs further reduce overall system cost
and size.
The RFM31‘s digital receive architecture features a high-performance ADC and DSP based modem which performs
demodulation, filtering, and packet handling for increased flexibility and performance. This digital architecture simplifies system
design while allowing for the use of lower-end MCUs.
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