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ISM-Band FSK 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 |
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Data rate (digital)
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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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