FM Radio Transmitter & Receivers Available As or or 88MHz Transmit Range Up To 0m Miniature Packages Data Rate upto 9.Kbps No Adjustable Components Very Stable Operating Frequency Operates from 0 to +8 0 C Transmitter - Supply Voltage SIL or DIL Package Receiver PLL XTAL Design CMOS/TTL Output RSSI Output Standby Mode (max 00nA) V Supply Voltage Applications Wireless Security Systems Car Alarms Remote Gate Controls Remote Sensing Data Capture Sensor Reporting These miniature RF modules provide a cost effective high performance FM Radio data link, at either,.9 or 88MHz. Manufactured using laser trimmed Thick Film ceramic Hybrid the modules exhibits extremely stable electronic characteristics over an Industrial Temperature range. The hybrid technology uses no adjustable components and ensures very reliable operation. This transmitter and receiver pair enables the simple implementation of a data link at distances upto 7 metres in-building and 0 metres open ground. 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. DS09- April 0 00 Reg. No. 7 00, England Page
Transmitters There are two 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 ; A Single in Line Package incorporating a voltage regulator for -V operation. (Compatible with many other RF transmitter modules available) Transmitter Block Diagram In XTAL XTAL Oscillator PLL Synthesizer Power Amp Out Part Numbering En Part Number FM-RTFQ- FM-RTFQ- FM-RTFQ-88 FM-RTFQ-R FM-RTFQ-88R DIL FM Transmitter Module MHz DIL FM Transmitter Module.9 MHz DIL FM Transmitter Module 88. MHz SIL FM Transmitter Module.9 MHz -V I/P SIL FM Transmitter Module 88. MHz -V I/P Receviers There are two versions of transmitter; RRFQ: A Single in Line Package with sleep / Power down mode. RRFQ ; A Single in Line Package, pin compatible with many other receivers Receivers Block Diagram In Pre Amp Filter Mixer 0.7MHz IF Filter FM Demodulator Comparator Out PLL Synthesizer Part Numbering Part Number FM-RRFQ- FM-RRFQ- FM-RRFQ-88 FM-RRFQ- FM-RRFQ-88 SIL FM Receiver Module MHz SIL FM Receiver Module.9 MHz SIL FM Receiver Module 88. MHz SIL FM Receiver Module.9 MHz SIL FM Receiver Module 88. MHz DS09- April 0 00 Reg. No. 7 00, England Page
RTFQ Mechanical Dimensions PCB Layout Requirements 0.mm.08mm.mm 0mm Top View (Components Underneath).mm Module Thickness mm Pins on "0. pitch RTFQ Mechanical Dimensions PCB Layout Requirements 0.8mm Pin. 0.mm. spacing RTFQ 0.7mm mm Module Thickness mm Pins on "0. pitch RTFQ RTFQ Name 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 Electrical Characteristics MIN TYPICAL MAX DIMENSION Supply Voltage RTFQ...00 V Supply Voltage RTFQ..00 V Supply Current 7 8 ma Standby Current (IN = EN = Low) 00 na Frequency.0.9 MHz 88. RF Output into 0Ω (=.V) + / + / + dbm Initial Frequency Accuracy - 0 + 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 - +80 C DS09- April 0 00 Reg. No. 7 00, England Page
RRFQ Mechanical Details 8.mm mm Component Side 8.mm 7.mm RRFQ Mechanical Details.7mm mm Component Side.mm 8.mm mm Pin RSSI Output RRFQ RRFQ Pin RF In (dbm) RSSI (V) + -0.0, 7,, -0. Data In (Antenna) -00.0 NC -90.78 Received Signal Strength Output -80.0 N/A 7 AF Output -70. 8 Data Out -0. N/A Power Down -0.7 0V = Standby -0.7 V = Operating 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 00 9,00 Hz 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 Operating Temperature Range - +80 o C Notes. Time from PD pin going high to stable data. (RRFQ only). Time from Poer ON to stable data. DS09- April 0 00 Reg. No. 7 00, England Page
Typical Application The following circuits show a remote control system with self learning feature for more information please see Datasheet DS00 Transmitter Circuit.V.V Antenna.V SW- 8 A0 7 A LED A DATA A RF00E 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 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. 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. 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)7 898 000 Fax + (0)7 80 Email sales@rfsolutions.co.uk http://www.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. DS09- April 0 00 Reg. No. 7 00, England Page