RFM31B
RFM31B ISM R
ECEIVER
Features
V1.0
Frequency Range
433/868/915MHz
ISM bands
Sensitivity = –121 dBm
Low Power Consumption
18.5 mA receive
Data Rate = 0.123 to 256 kbps
FSK, GFSK, and OOK modulation
Power Supply = 1.8 to 3.6 V
Ultra low power shutdown mode
Digital RSSI
Wake-up timer
Auto-frequency calibration (AFC)
Clear channel RX BW 2.6–620 kHz
Programmable assessment
Programmable packet handler
Programmable GPIOs
Embedded antenna diversity
algorithm
Configurable packet handler
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
On-chip crystal tuning
14-PIN DIP & 16-PIN SMD package
Low BOM
Power-on-reset (POR)
RFM31B
Applications
Remote control
Home security & alarm
Telemetry
Personal data logging
Toy control
Tire pressure monitoring
Wireless PC peripherals
Remote meter reading
Remote keyless entry
Home automation
Industrial control
Sensor networks
Health monitors
Tag readers
Description
HopeRF's RFM31B are highly integrated, low cost,433/868/915MHZ wireless
ISM receiver module. The low receive sensitivity
(–121dBm) ensures
extended
range and improved
link performance.
Built-in antenna diversity
and support for frequency hopping can be used to further extend range and
enhance 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 a lower-cost system
MCU. An integrated temperature sensor, general purpose ADC, power-on-reset
(POR), and GPIOs further reduce overall system cost and size.
The RFM31B'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.
An easy-to-use calculator is provided to quickly configure the radio settings,
simplifying customer's system design and reducing time to market.
Tel: +86-755-82973805
Fax: +86-755-82973550
E-mail: sales@hoperf.com http://www.hoperf.com
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HOPERF [ Hope Microelectronics co., Ltd ]
