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FM TRANSMITTER & RECEIVER HYBRID MODULES.
* * * * * * * * * * * * * * *
FM Radio Transmitter & Receivers Available as 315 or 433 or 868MHz Transmit Range up to 250m Miniature Packages Data Rate up to 9.6Kbps No Adjustable Components Very Stable Operating Frequency Operates from -20 to +85 C
0
FM-RTFQ SERIES FM-RRFQ SERIES
RTFQ1
RTFQ1 SM
Transmitter
3-12 Supply Voltage SIL, DIL or SMT Packages available
Receiver
PLL XTAL Design CMOS/TTL Output RSSI Output Standby Mode (max 100nA) 5V Supply Voltage RTFQ2
Applications
* * * * * *
Wireless Security Systems Car Alarms Remote Gate Controls Remote Sensing Data Capture Sensor Reporting
RRFQ1
RRFQ2
Description
These miniature RF modules provide a cost effective high performance FM Radio data link, at either 315, 433.92 or 868MHz. Manufactured using laser trimmed processes on thick film ceramic substrates, the hybrid modules exhibit extremely stable electronic characteristics over an industrial temperature range. The hybrid technology 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 75 metres in-building and 250 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.
DS069-8 Aug 07
(c)2007 Reg. No. 227 4001, England
Page 1
FM TRANSMITTER & RECEIVER HYBRID MODULES.
Transmitters
FM-RTFQ SERIES FM-RRFQ SERIES
There are three versions of transmitter: RTFQ1; A dual in line package operating at 3.3V. This provides the most rugged mechanical fixing to the host PCB. Power down mode is also available. RTFQ1 SM: A dual in line surface mount package operating at 3.3V. This provides the quickest and most efficient mechanical fixing to the host PCB. Currently only available in 433MHz. A Single in Line Package incorporating a voltage regulator for 3-12V operation. Compatible with many other RF transmitter module footprints available.
RTFQ2;
Transmitter Block Diagram
In
XTAL
XTAL Oscillator
PLL Synthesizer
Power Amp Out
En
Part Numbering
Part Number FM-RTFQ1-315 FM-RTFQ1-433 FM-RTFQ1-868 FM-RTFQ2-433R FM-RTFQ2-868R FM-RTFQ1-433SM Description DIL FM Transmitter Module 315 MHz DIL FM Transmitter Module 433.92 MHz DIL FM Transmitter Module 868.35 MHz SIL FM Transmitter Module 433.92 MHz 3-12V I/P SIL FM Transmitter Module 868.35 MHz 3-12V I/P Surface Mount FM Transmitter 433.92 MHz
Receivers
There are two versions of receiver: RRFQ1: A Single in Line Package with sleep / Power down mode. RRFQ2: A Single in Line Package, pin compatible with many other receivers
Receiver Block Diagram
Vcc In Vcc
Pre Amp Filter
Mixer
10.7MHz IF Filter
FM Demodulator
Comparator
Out
PLL Synthesizer
GND
GND
GND
Part Numbering
Part Number FM-RRFQ1-315 FM-RRFQ1-433 FM-RRFQ1-868 FM-RRFQ2-433 FM-RRFQ2-868 Description SIL FM Receiver Module 315 MHz SIL FM Receiver Module 433.92 MHz SIL FM Receiver Module 868.35 MHz SIL FM Receiver Module 433.92 MHz SIL FM Receiver Module 868.35 MHz
DS069-8 Aug 07
(c)2007 Reg. No. 227 4001, England
Page 2
FM TRANSMITTER & RECEIVER HYBRID MODULES.
RTFQ1 Mechanical Dimensions
PCB Layout Requirements 20.32mm
FM-RTFQ SERIES FM-RRFQ SERIES
1
5.08mm 2.54mm 20mm
2 3
Top View (Components Underneath)
6
11.43mm
Module Thickness 2mm Pins on "0.1 pitch
5 4
Pin Dimensions : 0.25mm x 0.50mm
RTFQ1 SMT Dimensions
RTFQ2 Mechanical Dimensions
PCB Layout Requirements 30.48mm 10.67mm
RTFQ2
Module Thickness 2mm Pins on "0.1 pitch
2.54
20.32mm 2.54 spacing
12 345
1mm
Pin Dimensions : 0.25mm x 0.50mm
Pin Description
RTFQ1 1 2 3 4 5 6 RTFQ2 N/A 5 1 3 4 2 Name En IN GND Vcc GND EA Description Enable (active high) Data input Ground, Connect to RF earth return path Supply Voltage Ground, Connect to RF earth return path External Antenna
Technical Specifications
Electrical Characteristics Supply Voltage RTFQ1 Supply Voltage RTFQ2 Supply Current Standby Current (IN = EN = Low) Frequency RF Output into 50 (Vcc=3.3V) Initial Frequency Accuracy FM Deviation Harmonic Spurious Emissions Input High Voltage RTFQ1 Input High Voltage RTFQ2 Power up Time (En to full RF) Power up Time (Power on to full RF) Max Data Rate Operating Temperature MIN 2.1 2.5 TYPICAL 3.3 7 315.0 433.92 868.35 +5 / +5 / +1 0 30 -50 MAX 4.00 12.00 8 100 DIMENSION V V mA nA MHz dBm KHz KHz dBc V V mS mS KHz C
-35 25 1.5 1.5
+35 35 Vcc 5.5 1 5 9.6 +80
-25
DS069-8 Aug 07
(c)2007 Reg. No. 227 4001, England
Page 3
FM TRANSMITTER & RECEIVER HYBRID MODULES.
RRFQ1 Mechanical Details
38.1mm 4mm
FM-RTFQ SERIES FM-RRFQ SERIES
Component Side 1 3 7 11 15
18.3mm
2.54mm
Pin Dimensions : 0.25mm x 0.50mm
RRFQ2 Mechanical Details
45.72mm 3mm
Component Side 12 14 18
16.5mm
1mm 2.54mm
Pin Dimensions : 0.25mm x 0.50mm
Pin Description
RRFQ1 1 2, 7,11 3 12 13 N/A 14 15 RRFQ2 16 2,15 1 14 17 18 N/A Pin Description +Vcc GND Data In (Antenna) NC Received Signal Strength Output AF Output Data Out Power Down 0V = Standby 5V = Operating
RSSI Output*
RF In (dBm) -120 -110 -100 -90 -80 -70 -60 -50 -40 RSSI (V) 1.20 1.32 1.50 1.78 2.06 2.35 2.62 2.72 2.75
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 10nF capacitor internally connected to GND, therefore a pull down resistor (to GND) 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 950A, the discharge current is lower than 2A
DS069-8 Aug 07
(c)2007 Reg. No. 227 4001, England
Page 4
FM TRANSMITTER & RECEIVER HYBRID MODULES.
Technical Specifications
Electrical Characteristics Supply Voltage (Vcc) Supply Current (Operating) Supply Current (Standby) Receiver Frequency R.F Sensitivity (100% AM) 315 ,433MHZ versions 868MHz versions 3dB Bandwidth Data Rate RRFQ1 RRFQ2 Turn on Time Turn on Time Level of Emitted Spectrum Low Level Output Voltage High Level Output Voltage RSSI Output Operating Temperature Range Min 4.5 Typical 5 5.7 315.00 433.92 868.35 -103 -100 +/-150 300 300 8 -70 0.8 Vcc-1 0.95 -25 +80 9,600 4,800 5 Max 5.5 6.8 100
FM-RTFQ SERIES FM-RRFQ SERIES
Dimension V mA nA MHz
Notes
dBm KHz Hz mSecs mSecs dBm V V mA o C 1 2 I = 200uA I = 200uA
Notes 1. Time from PD pin going high to stable data. (RRFQ1 only) 2. 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 10mV Peak to Peak. Normally a 470uF decoupling capacitor is sufficient de-coupling for an AC derived DC power source. Small capacitors of 10-100nF 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 433MHz is to use a piece of wire 17.3cm long (23.8cm at 315MHz) 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.
DS069-8 Aug 07
(c)2007 Reg. No. 227 4001, England
Page 5
FM TRANSMITTER & RECEIVER HYBRID MODULES.
Typical Application
FM-RTFQ SERIES FM-RRFQ SERIES
The following circuits show a remote control system with `self learning feature'. Please refer to datasheet DS600 for more information.
Transmitter Circuit
3.3V
Antenna SW1-4 1 2 3 4 A0 A1 A2 A3 RF600E Vcc LED DATA GND 8 7 6 5
3.3V
2K2
1 EN ANT 6
10K
BC848
2 IN 3 GND
5 GND 4 Vcc
RTFQ1-XXX
Receiver Circuit
Vcc
1K
13 14 4
15K
L
FM -RRFQ1
12 3 7 11 15
Status LED
Option Link
12
17 Sleep Vcc Vcc OP1
LKIN
O/P 1 O/P 2 O/P 3 O/P 4 Transmitter Low Battery Serial Data Output Vcc
18
OP2 1 OP3 OP4
M
2 3
11
10
LRN
RF600D
LB
1K Learn Switch
9
IN
SD1
ECLK
7
GND 5
22K
For more information or general enquiries, please contact: RF Solutions Ltd., Unit 21, Cliffe Industrial Estate, South Street, Lewes, E Sussex, BN8 6JL. England Tel +44 (0)1273 898 000 Fax +44 (0)1273 480 661 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.
DS069-8 Aug 07
(c)2007 Reg. No. 227 4001, England
Page 6

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