The low-cost ISM FSK, RFM22B transceiver module 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. Other features includes 8-bit ADC, temperature sensor, RX and TX FIFOs, and low-battery detection.

The module comes in a 16-pin, 16 x 16mm, SMD package, with pins spaced by 2mm. 

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)

Data Sheet