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DSP-equipped transceiver rolls for wireless nets

Posted: 08 Feb 2010 ?? ?Print Version ?Bookmark and Share

Keywords:RF transceiver? DSP? wireless network? sensor?

icycom RF transceiver

Centre Suisse d'Electronique et de Microtechnique (CSEM) has developed a 1V RF transceiver with an integrated DSP tailored for portable wireless communications such as wireless sensor networks and body area networks.

While battery life is partly driven by the radio transmission, in such wireless systems, it is also dependent on sensor data acquisition and associated local processing. Efficient local digital signal processing would allow compression of the sensor information and thereby reduction of the energy consumption associated with the transmission of the resulting information.

CSEM has developed an RF SoC integrating a 900MHz RF transceiver, a 32bit 150?m/MHz dual-MAC DSP RISC core with 96Kbyte of SRAM. Named icycom, the SoC runs off a 1V supply, compatible with a single alkaline cell, and is optimized for long battery life, consuming 3.5mA in receiving active mode, 40mA for 10dBm transmission and 1.1?A in standby with a real-time clock running. Additional peripherals such as a voltage-divider to also address lithium batteries, ADC, SPI, I?C, UART, I?S, etc, are all included on the same chip, resulting in a compact system solution.

- Peter Clarke
EE Times Europe

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