RFM22B-S2 SMD Wireless Transceiver - 915MHz

รหัสสินค้า : RFM22B-S2SMDWT-91MHz

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. Look for a breakout board coming soon!

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

Features:

 - 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)