Phimega Group Post #40

Sensor transceiver operates from harvested energy
posted by soliton at Fri, 25 Sep 2009 - 13:42:07

SensorDynamics (Graz, Austria) has launched a high-performance,
single-chip quad-band multichannel transceiver system which is claimed
to be the first fail-safe, fully integrated ISM band transceiver with
a universal sensor interface designed to run on low power generated by
energy harvesting.

The SD341 automotive transceiver is controlled by an ultra low-power
management circuit that enables operation with only microwatts of
power. In a typical application, the power management unit activates
the on-board 8051 microcontroller and other functional units that are
needed for a certain task as soon as sufficient power is detected.
Typical applications include car access systems and wireless,
batteryless remote sensors such as tire pressure monitoring systems.

The SD341 supports all four ISM bands (315, 433, 868 and 915 MHz) for
worldwide license-free FSK or ASK operation. Data rates up to 125
kbit/s are possible. The 32 KB on-chip flash memory is sufficient for
complex software. Several interfaces are implemented: up to twelve
mixed signal general purpose I/O pins, a four-wire interface (SPI
compatible), and a UART interface. Two 12-bit ADCs with 400 kHz
bandwidth are available for acquiring external sensor signals, and an
8-bit DAC is provided for driving external sensors.

To handle diverse sources of energy such as solar cells,
electromechanical or thermoelectrical energy generators, the SD341
operates with a minimum supply voltage of only 2 V and is not limited
to a specific voltage ramp for power on. It also accepts large voltage
variations during operation without loss of performance.

http://www.sensordynamics.cc/images/content/file/product_linecards/3%206_SD341_RFTRX_v0%203.pdf
http://www.sensordynamics.cc/cms/cms.php
http://www.elektor.com/news/sensor-transceiver-operates-from-harvested-energy.1074299.lynkx?utm_source=UK&utm_medium=email&utm_campaign=news

--
soliton
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