General Description

The RFM66W is a single-chip integrated circuit ideally suited for today's high performance ISM band RF applications. The RFM66W's advanced feature set includes a state-of-the-art packet engine and top level sequencer. In conjunction with a 64 byte FIFO, these automate the entire process of packet transmission, reception and acknowledgement without incurring the consumption penalty common to many transceivers that feature an on-chip MCU. Being easily configurable, it greatly simplifies system design and reduces external MCU workload to an absolute minimum. The high level of integration reduces the external BoM to passive decoupling and impedance matching components. It is intended for use as a high- performance, low-cost FSK and OOK RF transceiver for robust, frequency agile, half-duplex, bi-directional RF links. Where stable and constant RF performance is required over the full operating range of the device down to 1.8V the receiver and PA are fully regulated. For transmit intensive applications - a high efficiency PA can be selected to optimize the current consumption. The RFM66W is intended for applications requiring high sensitivity and low receive current. Coupling the digital state machine with an RF front end capable of delivering a link budget of 143dB (-123dBm sensitivity in conjunction with +20dBm Pout). The RFM66W complies with both ETSI and FCC regulatory requirements and is available in a 5 x 5 mm QFN 24 lead package. The low-IF architecture of the RFM66W is well suited for low modulation index and narrow band operation.