RF Transceiver
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