The RFM22 is a low-cost ISM FSK transceiver module which offers advanced radio features, 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.

The module comes in a 16-pin, 16 x 16mm, SMD package, with pins spaced by 2mm. Look for a breakout board coming soon!

Features

• Frequency Range =434 MHz
• Sensitivity = -118 dBm
• +20 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: 16 x 16mm (0.63 x 0.63 in)

Documents

• Datasheet
• Hope RF’s RFM22 Product Page