RFM22-S2 RF Transceiver Breakout Board

Product Description

Replacement: WRL-10154. The new breakout board uses the RFM22B module, which is the newer revision. This page is for reference only.

Description: Here is the breakout board for the RFM22 which gives you access to the pins. The RFM22 is a low-cost ISM (industrial, scientific, and medical) FSK (frequency-shift keying) transceiver module which offers communication at 434MHz and adjustable output power of up to +17 dBm. The wide operating voltage range of 1.8–3.6 V and low current consumption makes the RFM22 an ideal solution for battery powered applications.



Communication with the RFM22 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.

In our testing, a 17cm wire attached to the 'ANT' pin worked just fine. A hole is drilled next to the 'ANT' pin for strain relief.



Features:

• 
  Frequency Range = 434 MHz


• 
  Sensitivity = -118 dBm


• 
  +17 dBm Max Output Power (Configurable)


• 
  Low Power Consumption


• 
  Data Rate = 1 to 128 kbps


• 
  Power Supply = 1.8 to 3.6 V


• 
  Ultra low power shutdown mode


• 
  Digital RSSI


• 
  Wake-on-radio


• 
  Auto-frequency calibration (AFC)


• 
  Configurable packet structure


• 
  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


• 
  FSK, GFSK, and OOK modulation


• 
  Low BOM


• 
  Power-on-reset (POR)

Dimensions: 0.63x0.63in (16x16mm)



Documents:

• 
  Schematic (v12)


• 
  Example Code (ATmega328)


• 
  Datasheet


• 
  Hope RF's RFM22 Product Page


• 
  SFE Eagle Library has this part!