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ISM-Band FSK Transceiver

  transceiver

The ISM frequency band FSK/OOK transceiver is an OEM telemetry system for the
transmission of digital (biphase) data signals.

The system is providing half duplex transmission with a data rate up to 40 KBit/s.
The transmission power can be adapted to the received signal strength to ensure
a high data throughput for all systems sharing the transmission band and minimizes
the radiated power.
As a standard, the transceiver is equipped with two antenna connectors and a diversity
switch to avoid interferences from radio wave reflections and fading. A received signal
strength indicator (RSSI) signal and the lock-in state of the PLL can be monitored via
the board connector.

The system can be fitted to work in four different ISM frequency bands:
315 MHz (USA, Japan), 433 MHz, 868 MHz and 915 MHz (USA).
In addition, a version of the transceiver with an on-board antenna without diversity is
available.

Overview of the technical specifications:

Available frequency bands (ISM) 315 MHz, 433 MHz, 868 MHz, 915 MHz
Maximum output power +10 dBm
Receiver sensitivity -103 dBm

Data rate (digital)

110 Bit/s - 40 KBit/s
Bandwidth (analog) 20 KHz with FM
Interface serial, LV-CMOS level
Supply voltage 3,3 V
Supply current transmit mode 10 mA
Supply current reception mode 7 mA
Supply current standby mode 50 nA
Dimensions with antenna connectors 42 x 35 mm
Dimensions with internal antenna 51 x 35 mm

 To download the complete datasheet (as PDF), click here.


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IFN Ingenieurbüro für Nachrichtentechnik Helmut Brandl,
Inhaber Helmut Brandl jun., Blarerstrasse 56, D-78462 Konstanz
Tel.: +49 (0)7531 / 91250, Fax: +49 (0)7531 / 91252,
E-Mail: info@ifn-brandl.de, Ust-Ident-Nummer DE 156 599 916
© 2008 by IFN H. Brandl, last update: 20. March, 2007