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FREQUENCY-HOPPING
TRANSCEIVER
The ER900FHTRS transceiver
is a complete subsystem that combines a high-performance,
extremely low-power RF transceiver, a microcontroller, and
a voltage regulator. The microcontroller programs the functions
of the RF transceiver, controls the frequency-hopping algorithm,
and provides the interface to the host system via a serial
input/output. It also contains programmable EEPROM memory
that holds configuration data for the various transceiver-operating
modes. The microcontroller also relieves the host from the
intensive demands of searching for signals within the noise,
recovering the received data, and transmitting data in a
suitable format. An RSSI output can be used to measure received
signal levels. The module connects to a 50-W
antenna such as a whip, helical, or PCB loop.
The
ER900FHTRS intelligent radio transceiver incorporates Easy-Radio
technology to provide a high-performance, simple-to-use
radio device that can bidirectionally transfer serial data
over a range of up to 500-m LOS. It is intended for use
in U.S. markets on the 900-MHz frequency band and uses frequency-hopping
techniques to permit power outputs—allowed under FCC regulations—greater
than similar fixed-frequency devices.
The
transceiver operates from a 3.6-V supply and is physically
pin-compatible with other industry-standard devices. Serial
input and output simplify the interface to host systems,
and the embedded software significantly reduces design and
development time.
Features
include a 120-mW transmit RF power output, a high-sensitivity
receiver (typically –100 dBm), serial input and output for
transparent data transmission, low-power consumption of
less than 18 mA receive and 150 mA transmit, and industry-standard
DIL style. The ER900FHTRS costs less than $30 in
OEM quantities.
Easy
Radio USA
(207) 286-1600
www.easyradiousa.com
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