The RFM22B is a low-cost ISM FSK transceiver module which offers communication at 915MHz ISM and adjustable output power of up to +20 dBm. The wide operating voltage range of 1.8ā3.6 V and low current consumption makes the RFM22B an ideal solution for battery powered applications. Communication with the RFM22B is achieved via a standard 4-wire SPI interface. Three configurable general purpose I/Os are also available, the use of which can be tailored towards the needs of your project. A host of other features are also available including an 8-bit ADC, temperature sensor, RX and TX FIFOs, and low-battery detection. See the datasheet below for a complete description of every register and command. The module comes in a 16-pin, 16 x 16mm, SMD package, with pins spaced by 2mm.Note: These modules are 915MHz and Rev3.0.Features:Frequency Range: 915MHz ISMSensitivity = -121 dBmOutput power range: +20 dBm MaxData Rate = 0.123 to 256 kbpsFSK, GFSK, and OOK modulationPower Supply = 1.8 to 3.6 VUltra low power shutdown modeDigital RSSIWake-up timerAuto-frequency calibration (AFC)Power-on-reset (POR)Antenna diversity and TR switch controlConfigurable packet handlerPreamble detectorTX and RX 64 byte FIFOsLow battery detectorTemperature sensor and 8-bit ADCā40 to +85 Ā°C temperature rangeIntegrated voltage regulatorsFrequency hopping capabilityOn-chip crystal tuningDimensions: 16 x 16mm (0.63 x 0.63 in)Documents:DatasheetExample Code (ATmega328)
If you are interested in Internet of Things (IoT) or M2M projects check our open
source sensor platform Waspmote
which counts with more than 100 sensors available to use 'off the shelf', a complete API with hundreds of ready to use codes and a low consumption mode of just 0.7µA to ensure years of battery life.
Know more at:
Get the Starter Kits at: