Dual channel RF transceiver for sub GHz applications

Melexis has introduced the MLX73290-M, a multichannel RF transceiver that works in the ISM bands from 300MHz to 960MHz. With two RF channels, each with a programmable RF power transmitter and a highly sensitive RF receiver, the device can be programmed via its serial peripheral interface.

According to the company, the device is suited to applications such as home and building automation, tyre pressure monitoring systems, automatic meter reading, alarm systems, medical diagnostics and telemetry.

Output power ranges from -20dBm to 13dBm, while receiver sensitivity can reach -120dBm with a bandwidth of 15kHz. Programmability allows a range of RF parameters to be adjusted – including the number of channels, frequency resolution and output – in order to satisfy application criteria. On off keying, binary frequency shift keying, minimum shift keying, Gaussian minimum shift keying and Gaussian frequency shift keying modulation schemes are supported.

Two RF power detectors augment radiated power performance during transmission, while an energy harvesting interface allows the device to be powered from a solar cell and a supercapacitor.

Supplied in a 32lead QFN package measuring 5 x 5mm, the MLX73290-M is specified to work in temperatures ranging from -40 to 105°C.