RFM22B-S2 SMD Wireless Transceiver

Product Description

Description: The RFM22B is a low-cost ISM FSK transceiver module which offers communication at 433MHz ISM and adjustable output power of up to +20 dBm. The wide operating voltage range of 1.8–3.6 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. Look for a breakout board coming soon!

Note: These modules are 433MHz and Rev3.0.



Features:

• 
  Frequency Range: 433MHz ISM


• 
  Sensitivity = -121 dBm


• 
  Output power range: +20 dBm Max


• 
  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)


• 
  Power-on-reset (POR)


• 
  Antenna diversity and TR switch control


• 
  Configurable packet handler


• 
  Preamble detector


• 
  TX and RX 64 byte FIFOs


• 
  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

Dimensions: 16 x 16mm (0.63 x 0.63 in)



Documents:

• 
  Datasheet


• 
  Product Page


• 
  Example Code (ATmega328)


• 
  SFE Eagle Library has this part!