RFM22B-S2 SMD Wireless Transceiver - 915MHz


 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 1.8–3.6 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.

Note: These modules are 915MHz and Rev3.0.


Frequency Range: 915MHz 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)



Example Code (ATmega328)

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RFM22B-S2 SMD Wireless Transceiver - 915MHz

  • : 658
  • Brand: Sparkfun Electronic
  • Product Code: RFM22B-S2 SMD Kablosuz Alıcı-Verici - 915MHz
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Tags: rfm22b, s2, smd, wireless, transceiver, 915mhz