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FM-RX1-xxxA の電気的特性と機能

FM-RX1-xxxAのメーカーはRF Solutionsです、この部品の機能は「(FM-RX1-xxxx) Receiver Module FM」です。


製品の詳細 ( Datasheet PDF )

部品番号 FM-RX1-xxxA
部品説明 (FM-RX1-xxxx) Receiver Module FM
メーカ RF Solutions
ロゴ RF Solutions ロゴ 




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FM-RX1-xxxA Datasheet, FM-RX1-xxxA PDF,ピン配置, 機能
www.DataSheet4U.com
FM R. F. RECEIVER MODULES. FMRX1- XXXX
FEATURES
SELECTIVE DOUBLE CONVERSION SUPERHET.
LOW POWER
13mA CONTINUOUS,
130uA POWER SAVE MODE.
FAST ENABLE TIME;
‘A’ VERSION <3mS.
‘F’ VERSION <1mS.
WIDE SUPPLY VOLTAGE, 4.5 - 9 VOLTS.
ANALOGUE & DIGITAL OUTPUT.
HIGH DATA RATES (up to 5Kbps).
CARRIER DETECT OUTPUT.
AVAILABLE AS EITHER 418 OR 433MHz.
APPLICATIONS
REMOTE SWITCHING SYSTEMS
REMOTE DATA COMMS
PAGERS
ALARM SYSTEMS
GARAGE DOOR OPENERS
REMOTE TELEMETRY
GENERAL DESCRIPTION
The R.F. Solutions FMRX1 - XXX range of Radiometrix Receivers are compact board SIL Modules which can be
used to capture R.F. data from an FM transmitter such as the RFS FMTX-1 (see RF Solutions FM Transmitter
Module data sheet FMTX1-XxXX). When used as a remote control system, up to 200 metres range can be
achieved.
The Receiver may also be supplied as a bare board or as a custom solution unique to customer specific
requirements. Please contact R.F. Solutions for further information.
BLOCK DIAGRAM
SAW
1st LO
433.92MHz
2nd
LO
16MHz
R.F.
IN 1
418MHz PRE
BPF
AMP
GND
2
DS000021 Rev 2.1 Jul ‘99
1st
MIXER
2nd MIX
IF AMP
DEMOD
3rd
ORDER
5khz LPF
BUFFER
ACTIVE
DATA
SLICER
©1999 REG No 277 4001, ENGLAND.
Vcc
5
DETECT
3
AF
6
+
_ DATA
7
0V
4
Page 1

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FM R. F. RECEIVER MODULES. FMRX1- XXXX
DETECT OUTPUT (Pin 3)
This output of the module may be used in several ways:-
1. Connecting to Vcc (pin 5) with a 47kresistor unmutes the AF and DATA outputs for normal operation.
2. Pulled down to 0 volts with a 47Kmutes the AF and DATA outputs (both go to 0 volts).
3. To drive the base of a PNP transistor (see Test Circuit) to derive a logic compatible carrier detect.
4. For duty cycle power saving control where battery life needs to be maximised (e.g. in portable equipment).
By pulsing the decoder on/off the average supply current may often be reduced by a factor of 20 or more,
depending on the system requirements. The data detect output is valid 1.5ms (2.5ms worst case) after
application of the supply, and is used to inhibit the power saving while data decoding is being completed.
INTERNAL DATA SLICER (Pin 7)
This is a CMOS compatible data output, normally used to drive a digital decoder IC or a microprocessor
performing the data decoding. The data slicer in the receive module is designed to accept data with a wide range
of pulse widths and mark-space ratio’s. See specification table for limiting values.
The data slicer has a 10ms transient response time. This is the settling time of the adaptive comparator, i.e. the
first 10ms of signal may be corrupt at the data output.
A.F. OUTPUT (Pin 6)
This is the FM demodulator’s output after buffering and filtering. Since it is taken before the data slicer in the
module, it may be used to drive external data slicers/demodulator’s in cases where the internal data slicer is not
suitable. This is the case where an analogue subcarrier is being employed, e.g. 2-tone AFSK or DTMF tones. In
these cases the AF output is used to drive the FSK/DTMF decoder directly. The AF output is also a very useful
test point for monitoring signals or interference. The AF output is DC coupled to the FM demodulator, thus the DC
level varies with the frequency of the incoming signal.
SUPPLY REQUIREMENTS
The module requires a clean supply. Noise and ‘hash’ in the 5 to 500 kHz band and 16MHz +/- 1MHz must be
<2mV. We recommend a 10µF capacitor and 10series feed resistor in cases where the cleanness of the
supply is in doubt.
ANTENNA DESIGN
The positioning of the antenna is of the utmost importance and is an important factor in the determining system
range, the following notes should assist in obtaining optimum performance:-
Keep it clear of other metal in the system. This applies particularly to the ‘hot’ (top) end of the antenna. The best
position by far is sticking out of the top of the product, but if this is not possible for practical or ergonomic
reasons a compromise may be needed. If an internal antenna must be used, try to keep it away from other metal
components, particularly larger components such as transformers, batteries and PCB tracks or the earth plane.
The space around the antenna is as important as the antenna itself.
Keep the antenna away from interference sources. Bad interference can easily reduce system range by a factor
of 5. High speed logic is one of the worst sources; fast logic edges have harmonics which extend into the UHF
band, and PCB tracks can radiate these harmonics most efficiently. Single chip microcontrollers and ground
planed logic boards reduce this problem significantly.
For more detail information on antenna design, please see RF Solutions product catalogue.
DS000021 Rev 2.1 Jul ‘99
©1999 REG No 277 4001, ENGLAND.
Page 3


3Pages


FM-RX1-xxxA 電子部品, 半導体
www.DataSheet4U.com
FM R. F. RECEIVER MODULES. FMRX1- XXXX
PERFORMANCE CHARACTERISTICS
Circuit = Test Circuit
Ambient Temperature
= 20 oC.
Supply Voltage
= +5.0Volts.(unless otherwise stated)
TIMING WAVEFORMS
-5
Signal
Noise -25
Pin 4 AF
(dB) -45
-65
0.1
1 3 30
RF Input Level, Pin 1
(uV)
3
2.7
DC Volts 2.4
(Pin 4) 2.1
1.8
1.5
-150
-50 50 150
Frequency shift
(KHz)
0
Pin 3 -0.2
wrt
Pin 5 -0.4
(Vcc) -0.6
-0.8
0
-10oC
+25o C
+50o C
0.2 0.4 0.6 0.8 1 1.2
RF Input Level (Pin 1)
(uV)
20
Supply 15
Current
Pin 5
10
(mA) 5
0
4 5 6 7 8 9 10
Supply
Voltage
Supply
_____
Detect
Power- Up Timing
5 Volts
0 Volts
2mS
No Signal
_____
Detect Stable
Signal Present
AF Signal
Data
Data Settling Time <10mS
Signal Timing
RF Signal
_____
Detect
RF Signal
2mS
(White Noise)
Signal
(Squared
Signal
Data Settling Time <10mS
DS000021 Rev 2.1 Jul ‘99
©1999 REG No 277 4001, ENGLAND.
Page 6

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共有リンク

Link :


部品番号部品説明メーカ
FM-RX1-xxxA

(FM-RX1-xxxx) Receiver Module FM

RF Solutions
RF Solutions
FM-RX1-xxxF

(FM-RX1-xxxx) Receiver Module FM

RF Solutions
RF Solutions


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