T9 / R9 Long Range RF Modules Features • FM Narrow Band Crystal Stabilised • Range up to 1,000 Metres • 868MHz / 433MHz Versions • 4 channel versions • 434.075MHz • 433.920MHz • 434.225MHz • 434.525MHz • Miniature SIL Package • Data Rates Up To 57Kbps • En 300-220 Compliant • Transmit Power +13dBm • Wireless Networking • Receiver Sensitivity –121dBm • Domestic And Commercial Wireless • RSSI Output Security Systems Applications • Telemetry Systems • Panic Attack Facility • General Purpose Remote Control General Description The T9/R9 series are miniature narrow band transmitter and receiver UHF radio modules, which enable the implementation of a simple telemetry link at data rates up to 57K6Kbits/s. These narrow band UHF radio modules provide a very high RF performance for general purpose applications. The transmitter modules have a power output of up to +13dBm. When combined with a very high receiver sensitivity these modules obtain a very high performance of range and reliability within the 433MHz band. DS-T9R9-2 T9 R9 RF Modules Transmitter Connection Diagram Receiver Connection Diagram Pin Description: Pin Description: RF GND (pin 1) RF ground pin, internally connected to pin 4 (0v). This pin should ideally be connected to the nearest ground plane ( e.g coax braid, main PCB ground plane etc. ). RF IN ( pin 1) 50 Ohm RF input from antenna, connect using shortest possible route. This input is isolated from the internal circuit using the air gap of the front end SAW RF filter. RF OUT (pin 2) 50 Ohm RF antenna output. To achieve best results, the antenna impedance must match that of the module. RF GND (pin 2) RF Ground connection, preferably connected to a solid ground plane. Vcc (pin 3) +Ve supply pin. The module will generate RF when Vcc is present. GND (pin 4) Supply and data ground connection, connected to pin 1. Data IN (pin 5) Digital Data input. The drive circuitry should be supplied with the same supply voltage as the TX module. RSSI / Carrier Detect (pin 3) The Received Signal Strength Indicator provides a DC output voltage proportional to the RF input signal. The amplitude of the RSSI voltage increases with increasing RF signal strength. A simple transistor interface can yield a carrier detect logic output. GND (pin 4) Connect to power supply ground. VCC (pin 5) +Ve supply pin. Operation from a 5V supply able to source 10mA at less than 10mV p-p ripple. AF (pin 6) Audio frequency output ( max 40microA source ) DATA OUT (pin 7) CMOS compatible output. This may be used to drive external decoders. To reduce any noise on this output add a 56pF cap from this pin to GND. DS-T9R9-2 T9 R9 RF Modules Reducing Power to 10mW RSSI Values If the T9 transmitter will be used with an efficient antenna in countries where only 10mW radiated power is allowed, then it is the responsibility of the user to ensure the radiated signal complies. A simple resistive network on the output of the module will attenuate the power down to this level. Resistor values will need to be set according to the power required The R9 receiver RSSI outputs provide a DC output proportional to the level of RF signal received. The table below shows the typical RSSI value depending on the Signal strength. When laying out this network, keep all tracks as short as possible, especially ground paths and use 50 ohm track impedances when connecting to and from this network. This impedance can be realised on 1.6mm FR4 pcb by using a track width Mechanical Dimensions DS-T9R9-2 RF Signal Strength (dBm) R9 (V) -130 1.03 -120 1.06 -110 1.16 -100 1.34 -90 1.59 -80 1.78 -70 1.81 -60 1.81 -50 2.17 -40 2.45 -30 2.52 -20 2.52 T9 R9 RF Modules Antenna Design Application Circuits The design and positioning of the antenna is as crucial as the module performance itself in achieving a good wireless system range. The following will assist the designer in maximising system performance. The application circuits a remote control Schematic, for further Data please see DS600 The antenna should be kept as far away from sources of electrical interference as physically possible. If necessary, additional power line decoupling capacitors should be placed close to the module. The antenna ‘hot end’ should be kept clear of any objects, especially any metal as this can severely restrict the efficiency of the antenna to receive power. Any earth planes restricting the radiation path to the antenna will also have the same effect. Best range is achieved with either a straight piece of wire, rod or PCB track @ ¼ wavelength (16.4cm @ 433.92MHz). Further range may be achieved if the ¼ wave antenna is placed perpendicular in the middle of a solid earth plane measuring at least 16cm radius. In this case, the antenna should be connected to the module via some 50 ohm characteristic impedance coax. The transmitter application circuits generates a highly secure Keeloq protocol four switch transmitter encoder with LED indication or Transmission. The Receiver application circuits generates a receiver decoder with four relay drive outputs and serial data output. It has easy Learn feature of the Keeloq transmitter and provides a Transmitter lower Battery indication. DS-T9R9-2 T9 R9 RF Modules Absolute Maximum Ratings: Transmitter (all voltage versions) T9 3V Version T9 5V Version Min. Max. Min. Max. Operating Temperature -25°C +55°C -10°C +55°C Storage Temperature -40°C +100°C -40°C +100°C Supply Voltage - 5.5V - 24V Data Input - 5.5V - 10V Electrical Characteristics: Transmitter T9 3V Version Min. Typ. Max T9 5V Version Min. Typ. Max. Units Pin 2.2 Volts 3 Volts 3 mA 3 1 dBm 2 1 Note DC Levels Supply (5V variants) Supply (3V variants) 2.2 3.0 5.0 12.0 5.5 Current & RF Power Supply current 30 RF output power 30 +13 +13 RF & Data (All Variants) 2nd harmonic Harmonics @ > 1GHz Initial frequency accuracy Frequency accuracy over full temp range Modulation bandwidth @ -3dB Power up time to full RF -40 dBm 2 -60 -50 dBm 2 +/-25 +/-25 Hz +/30 Data rate Data pulse width -60 ±27 50 50 KHz 17 17 ms 20 50 20 50 Notes 1. Measured into a 50ohm impedance. 2. The limit for the European spec EN 300 220 is -36dBm 3. A +/-2.5KHz Deviation on the RF carrier is also available DS-T9R9-2 KHz kbps ms 3 T9 R9 RF Modules Absolute Maximum Ratings: Receiver R9 Min. Max. Operating Temperature -10°C +55°C Storage Temperature -40°C +100°C Supply Voltage - 24V Data Input - 5.5V Electrical Characteristics: Transmitter R9 Units Min. Typ. Max. 4.5 5 5.5 V 6 7 mA - 10 mVP-P Notes DC Levels Supply voltage Supply current Supply ripple - Data output high =>4.5 V Data output low <=0.5 V RF sensitivity -116 dBm IF Bandwidth +/-27 KHz +/-100 Hz 20 dBm Spurious responses up to 1GHz <60 dB LO leakage, conducted <60 dBm LO leakage, radiated <60 dBm 63 dB RF Initial frequency accuracy Max R.F. input E.M.C. Image rejection DYNAMIC TIMING Power up to stable data (With RF signal present) Signal to stable data (With PSU already on) Power up to valid RSSI ( With RF signal Present ) Mark:space ratio Bit rate 23 mS 1 2.5 5 mS 1 3 5 mS 1 50 100 Notes 1. Timings are to be confirmed. 2. Note 1Hz = 2 bps DS-T9R9-2 18 % 20000 Bps 3 T9 R9 RF Modules Part Numbering— Numbering—Transmitters Part No Operating Frequency Operating Voltage T9-434-075 434.075MHz 5-10V T9-434-075-3V 434.075MHz 3V T9-433-920 434.920MHz 5-10V T9-433-920-3V 434.920MHz 3V T9-434-225 434.225MHz 5-10V T9-434-225-3V 434.225MHz 3V T9-434-525 434.225MHz 5-10V T9-434-525-3V 434.225MHz 3V Part Numbering— Numbering—Receivers Part No Operating Frequency Operating Voltage R9-434-075 434.075MHz 5-10V R9-433-920 434.920MHz 5-10V R9-434-225 434.225MHz 5-10V R9-434-525 434.225MHz 5-10V RF Solutions Ltd. Recycling Notice Meets the following EC Directives: DO NOT Discard with normal waste, please recycle. ROHS Directive 2002/95/EC. Specifies certain limits for hazardous substances. WEEE Directive 2002/96/EC Waste electrical & electronic equipment. This product must be disposed of through a licensed WEEE collection point. RF Solutions Ltd., fulfils its WEEE obligations by membership of an approved compliance scheme. R F Solutions Ltd., Unit 21, Cliffe Industrial Estate, Lewes, E. Sussex. BN8 6JL. England. Email : [email protected] http://www.rfsolutions.co.uk Tel Sales: 01273 898 020 Tel Technical: 01273 898 007 Tel Gen Enq: 01273 898 000 Fax: 01273 480 661 Whilst the information in this document is believed to be correct at the time of issue, RF Solutions Ltd does not accept any liability whatsoever for its accuracy, adequacy or completeness. No express or implied warranty or representation is given relating to the information contained in this document. RF Solutions Ltd reserves the right to make changes and improvements to the product(s) described herein without notice. Buyers and other users should determine for themselves the suitability of any such information or products for their own particular requirements or specification(s). RF Solutions Ltd shall not be liable for any loss or damage caused as a result of user’s own determination of how to deploy or use RF Solutions Ltd’s products. Use of RF Solutions Ltd products or components in life support and/or safety applications is not authorised except with express written approval. No licences are created, implicitly or otherwise, under any of RF Solutions Ltd’s intellectual property rights. Liability for loss or damage resulting or caused by reliance on the information contained herein or from the use of the product (including liability resulting from negligence or where RF Solutions Ltd was aware of the possibility of such loss or damage arising) is excluded. This will not operate to limit or restrict RF Solutions Ltd’s liability for death or personal injury resulting from its negligence.