FM-RTFQ SERIES FM-RRFQ SERIES FM TRANSMITTER & RECEIVER HYBRID MODULES. Transmitter. Receiver. Applications

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1 . FM Radio Transmitters & Receivers Available as MHz Transmit Range up to 0m Miniature Packages Data Rate up to 9.Kbps No Adjustable Components Very Stable Operating Frequency Operates from 0 to C EMC Compliant for use in Europe FCC Compliant for use in USA RTFQP Transmitter V Supply Voltage SIL, DIL or SMT Packages available Receiver PLL XTAL Design CMOS/TTL Output RSSI Output Standby Mode (max 00nA) V Supply Voltage RTFQP Applications Wireless Security Systems Car Alarms Remote Gate Controls Remote Sensing Data Capture Sensor Reporting RRFQP Description These miniature RF modules provide a cost effective high performance FM Radio data link, at,.9mhz. The modules uses no adjustable components ensuring very reliable operation. This transmitter and receiver pair enables the simple implementation of a data link at distances up to 7 metres in-building and 0 metres open ground. The modules have been approved for operation with Europe and USA within FCC part. These modules will suit one-to-one and multi-node wireless links in applications including car and building security, EPOS and 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, batterypowered applications such as hand-held terminals. DS070- Jan 0 Reg. No. 7 00, England Page

2 Transmitters There are three versions of transmitter: RTFQ: A dual in line package operating at.v. This provides the most rugged mechanical fixing to the host PCB. Power down mode is also available. RTFQ SM: RTFQ: A dual in line surface mount package operating at.v. This provides the quickest and most efficient mechanical fixing to the host PCB. Currently only available in MHz. A dual in line package operating at.v. This provides the most rugged mechanical fixing to the host PCB. Power down mode is also available. Transmitter Block Diagram In XTAL XTAL Oscillator PLL Synthesizer Power Amp Out Part Numbering En Part Number FM-RTFQ-P FM-RTFQ-PSO FM-RTFQ-P Description DIL FM Transmitter Module.9 MHz SMT FM Transmitter Module.9 MHz SIL FM Transmitter Module.9 MHz Receiver Block Diagram In Pre Amp Filter Mixer 0.7MHz IF Filter FM Demodulator Comparator Out PLL Synthesizer Part Numbering Part Number FM-RRFQ- Description SIL FM Receiver Module.9 MHz DS070- Jan 0 Reg. No. 7 00, England Page

3 RTFQ Mechanical Dimensions PCB Layout Requirements 0.mm.08mm.mm 0mm Top View (Components Underneath).mm Module Thickness mm Pins on "0. pitch Pin Dimensions : 0.mm x 0.0mm RTFQ SMT Dimensions 0.mm 9.0mm.mm.0mm.9mm.08mm.mm.9mm Top View (Components Underneath).mm Module Thickness 0.8mm RTFQ Mechanical Dimensions PCB Layout Requirements 0.8mm. 0.mm. spacing RTFQ 0.7mm mm Module Thickness mm Pins on "0. pitch Pin Dimensions : 0.mm x 0.0mm Pin Description RTFQ RTFQ Name Description N/A En Enable (active high) IN Data input Ground, Connect to RF earth return path Supply Voltage Ground, Connect to RF earth return path EA External Antenna Technical Specifications RTFQP, RTFQP Electrical Characteristics MIN TYPICAL MAX DIMENSION Supply Voltage RTFQ...00 V Supply Current 7 8 ma Standby Current (IN = EN = Low) 00 na Frequency.9 MHz RF Output into 0Ω (=.V) + / + / + dbm Initial Frequency Accuracy KHz FM Deviation 0 KHz Harmonic Spurious Emissions -0 dbc Input High Voltage RTFQ. V Input High Voltage RTFQ.. V Power up Time (En to full RF) ms Power up Time (Power on to full RF) ms Max Data Rate 9. KHz Operating Temperature C DS070- Jan 0 Reg. No. 7 00, England Page

4 RRFQ Mechanical Details 8.mm.0mm Component Side 8.mm 7.mm Pin Dimensions : 0.mm x 0.0mm Pin Description RSSI Output* RRFQ Pin Description RF In (dbm) RSSI (V) , 7, -0. Data In (Antenna) NC Received Signal Strength Output N/A AF Output -70. Data Out -0. Power Down V = Standby -0.7 V = Operating RSSI Output The RSSI provides a DC Voltage proportional to the peak value of the receive data signal. This output can be used as an indicator for the received signal strength to use in wake-up circuits etc. An RC circuit is normally used to provide the timing for the RSSI signal. The modules have a 0nF capacitor internally connected to, therefore a pull down resistor (to ) connected to the RSSI pin may be used to generate a simple RC network time constant for the RSSI signal output. Please note that the maximum output current is typically 90µA, the discharge current is lower than µa DS070- Jan 0 Reg. No. 7 00, England Page

5 Technical Specifications Electrical Characteristics Min Typical Max Dimension Notes Supply Voltage ().. V Supply Current (Operating).7.8 ma Supply Current (Standby) 00 na Receiver Frequency.00.9 MHz 88. R.F Sensitivity (00% AM),MHZ versions -0 dbm 88MHz versions -00 db Bandwidth +/-0 KHz Data Rate RRFQ 00 9,00 Hz RRFQ 00,800 Turn on Time msecs Turn on Time 8 msecs Level of Emitted Spectrum -70 dbm Low Level Output Voltage 0.8 V I = 00uA High Level Output Voltage - V I = 00uA RSSI Output 0.9 ma Operating Temperature Range o C Notes. Time from PD pin going high to stable data. (RRFQ only). Time from Power ON to stable data. Prototyping Hints It is essential when building any Low Power Radio System that you have a clean DC power source. Typically the ripple voltage should be less than 0mV Peak to Peak. Normally a 70uF decoupling capacitor is sufficient de-coupling for an AC derived DC power source. Small capacitors of 0-00nF can also be used across the power supply to filter high frequency noise. Never place a Transmitter or Receiver directly into Vero-Board or any similar prototyping board. This will severely restrict the range. Rather, use small lengths of wire from the prototyping board to the pins of the Transmitter or Receiver. A useful antenna, for testing purposes, for both the Transmitter and Receiver on MHz is to use a piece of wire 7.cm long (.8cm at MHz) soldered directly to the antenna pin. Data should be encoded before it is transmitted over a wireless link to ensure reliability and reduce the effect of interference and cross talk. A range of encoders IC s are available from RF Solutions, please refer to the RF Solutions website for further information. DS070- Jan 0 Reg. No. 7 00, England Page

6 Typical Application The following circuits show a remote control system with self learning feature. Please refer to datasheet DS00 for more information. Transmitter Circuit.V Antenna.V SW- A0 8 A A A 7 LED DATA RF00E 0K BC88 K EN IN ANT RTFQ-XXX Receiver Circuit KΩ KΩ FM-RRFQ 7 Status LED Learn Switch Option Link L M KΩ 0 7 Sleep OP LKIN 8 OP OP OP LRN LB RF00D SD O/P O/P O/P O/P Transmitter Low Battery Serial Data Output 9 IN ECLK 7 KΩ For more information or general enquiries, please contact: RF Solutions Ltd., Unit, Cliffe Industrial Estate, South Street, Lewes, E Sussex, BN8 JL. England Tel + (0) Fax + (0) sales@rfsolutions.co.uk RF Solutions is a member of the Low Power Radio Association All Trademarks acknowledged and remain the property of the respected owners Information contained in this document is believed to be accurate, however no representation or warranty is given and R.F. Solutions Ltd. assumes no liability with respect to the accuracy of such information. Use of R.F.Solutions as critical components in life support systems is not authorised except with express written approval from R.F.Solutions Ltd. DS070- Jan 0 Reg. No. 7 00, England Page