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FM-RTFQ2-868R Datenblatt(PDF) 5 Page - rfsolutions.ltd

Teilenummer FM-RTFQ2-868R
Bauteilbeschribung  FM TRANSMITTER & RECEIVER HYBRID MODULES
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Hersteller  RFSOLUTIONS [rfsolutions.ltd]
Direct Link  http://www.rfsolutions.co.uk
Logo RFSOLUTIONS - rfsolutions.ltd

FM-RTFQ2-868R Datenblatt(HTML) 5 Page - rfsolutions.ltd

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DS069-8 Aug 07
©2007 Reg. No. 227 4001, England
Page 5
FM TRANSMITTER & RECEIVER
HYBRID MODULES.
FM-RTFQ SERIES
FM-RRFQ SERIES
Technical Specifications
Electrical Characteristics
Min
Typical
Max
Dimension
Notes
Supply Voltage (Vcc)
4.5
5
5.5
V
Supply Current (Operating)
5.7
6.8
mA
Supply Current (Standby)
100
nA
Receiver Frequency
315.00
433.92
868.35
MHz
R.F Sensitivity (100% AM)
315 ,433MHZ versions
868MHz versions
-103
-100
dBm
3dB Bandwidth
+/-150
KHz
Data Rate
RRFQ1
RRFQ2
300
300
9,600
4,800
Hz
Turn on Time
5
mSecs
1
Turn on Time
8
mSecs
2
Level of Emitted Spectrum
-70
dBm
Low Level Output Voltage
0.8
V
I = 200uA
High Level Output Voltage
Vcc-1
V
I = 200uA
RSSI Output
0.95
mA
Operating Temperature Range
-25
+80
oC
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.


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