1. Descriptions of RF Transceiver Module RFM66W:

The RFM66W is a fully integrated ISM band transceiver optimized for use in the (EN 300 220-1) 868 MHz band in Europe and the (FCC Part 15) 915 MHz band in the US with a minimum of external components. It offers a combination of high link budget and low current consumption in all operating modes. 

The 143 dB link budget is achieved by a low noise CMOS receiver front end and up to +20 dBm of transmit output power. A pair of internal power amplifiers are provided permitting either fully regulated - for constant RF performance, or direct supply connection - for optimal efficiency. 

This makes RFM66W ideal for either M2M applications powered by alkaline battery chemistries or long battery life metering applications using Lithium battery chemistries.The Low-IF architecture of the RFM66W sees fast transceiver start times and demodulation predicated towards low modulation index and gaussian filtered spectrally efficient modulation formats.

2. Features of RF Sub-Ghz Transceiver Module RFM66W:

● +20 dBm - 100 mW Constant RF output vs. Vsupply

● +14 dBm high efficiency PA

● Programmable bit rate up to 300kbps

● High Sensitivity: down to -123 dBm at 1.2 kbps

● Bullet-proof front end: IIP3 = -12 dBm

● 80 dB Blocking Immunity

● Low RX current of 9.3 mA, 100nA register retention

● Fully integrated synthesizer with a resolution of 61 Hz

● FSK, GFSK, MSK, GMSK and OOK modulations

● Built-in Bit Synchronizer performing Clock Recovery

● Sync Word Recognition

● Preamble detection

● io-homecontrol® compatibility mode

● 115 dB+ Dynamic Range RSSI

● Automatic RF Sense with ultra-fast AFC

● Packet engine up to 64 bytes with CRC

● Built-in temperature sensor and Low Battery indicator

● Module Size:19.7X16mm

3. Applications of RF Transceiver Module RFM66W:

● Wireless Sensor Networks

● Automated Meter Reading

● Home and Building Automation

● Wireless Alarm and Security Systems

● Industrial Monitoring and Control