S
MART
R
ADIO
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RANSCEIVER
RF650
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Intelligent Modem RF Transceiver
RF Data Rates to 100 kbps
Up to 250 metres Range
Selectable ‘Narrowband’ RF Channels
Crystal Controlled RF Design
Supply Voltage 3.3V
Serial Data Interface with Handshake
Host Data Rates up to 38,400 Baud
Very Stable Operating Frequency
Low Profile Ceramic DIL Package
Operates from –20 to +70
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C
Evaluation Board for Rapid Development
Operating Modes
Applications
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Point to Point
Broadcast
One to Many Network
Many to One Network
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Wireless Security Systems
EPOS Terminals
Sensor Data logging
Remote Telemetry & Telecommand
Remote Meter Reading
Description
The RF650 radio transceiver module provides a reliable wireless communications for the transfer of data at
Gaussian Frequency Shift Keying (GFSK), Manchester encoded, RF data rates of up to 100 kbps. Their
unique features of narrow band operation and user channel selection combined with excellent interference
rejection make them an ideal choice for next generation applications. The transceivers have the functions of a
complete radio modem and simply require CMOS/TTL data at the transmit input and the corresponding
transceiver(s) output the same data. Preamble and CRC are automatically generated and added to the RF
transmission.
Operating within the 433MHz band the modules operate in user selectable channels. The RF650 can use any
channel in 100kHz steps. The modules both use a crystal controlled design which provides narrow band
performance which is far superior to other wideband ‘SAW’ based designs.
Possible applications include one-to-one and multi-node wireless links in applications including car and
building security, EPOS, inventory tracking, remote industrial process monitoring and computer networking.
Because of their small size and low power requirements, both modules are ideal for use in portable, battery-
powered applications such as hand-held terminals.
Part Numbering
Part Number
RF650
RF650-868
RF650-EVAL
Description
Smart Radio Transceiver Module, 433MHz
Smart Radio Transceiver Module, 868MHz
Evaluation Host PCB for RF650 Module (Module not Included)
DS650-6 June ‘06
©2006 RF Solutions Ltd, www.rfsolutions.co.uk
Tel 01273 898000 Fax 01273 480661
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