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FM Radio Transmitter & Receiver Modules



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T5-434-3-20B 데이터시트, 핀배열, 회로
FM Radio Transmitter & Receiver Modules
T5 / R5
Features
Miniature SIL package
Fully shielded
Data rates up to 128kbits/sec
Range up to 300 metres
Single supply voltage
Industry pin compatible
T5-434
Temp range -20°C to +55°C
No adjustable components
High shock resistance
Temperature compensated RF output
Applications
Vehicle alarm systems
Remote gate controls
Garage door openers
Domestic and commercial security
General Description
The T5 and R5 data link modules are miniature
UHF radio modules, which enable the
implementation of a simple telemetry link upto 300
metres, and at data rates of up to 128Kbit/s
The T5 and R5 modules will suit one-to-one and
multi-node wireless links in applications including
building and car security, remote industrial
process monitoring and computer networking.
The ‘B’ derivative parts offer a cost reduced
version.
R5-434
High sensitivity
Analogue / Digital Outputs
Signal strength output (RSSI)
On board AGC
Single conversion FM Super-Het
Double RF filtering (inc saw front end)
The receiver is based on the classical superhet
single conversion architecture utilising a PLL xtal
referenced oscillator which yields a highly stable
IF frequency (10.7 MHz). This hence allows use of
high Q bandpass filters offering excellent adjacent
channel rejection and hence high interference
Immunity.
Because of its small size and low power
requirements, these modules are ideal for use in
portable battery powered wireless applications.
DS305-7 Feb ‘04
©2004 REG No 277 4001, England.
Page 1


T5-434-3-20B 데이터시트, 핀배열, 회로
FM Radio Transmitter & Receiver Modules
Connection Diagram
T5 / R5
T5
12
345
Figure 1: Transmitter
Pin Descriptions:
RF GND (pin 1)
RF ground pin, internally connected to pin 4 (0V).
This pin should ideally be connected to the
nearest ground plane (e.g. coax braid, main PCB
ground plane etc.)
RF OUT (pin2)
50RF antenna output. To achieve best results
the antenna impedance must match that of the
module.
VCC (pin 3)
+Ve supply pin (3.0 to 9.0 volts). The module will
generate RF when VCC is present. It is strongly
recommended that a 100nF capacitor decouples
the supply rail as close as possible to this pin.
GND (pin 4)
Supply and data ground connection, connected to
pin 1.
Data IN (pin 5)
This input has an impedance of 47Kand should
ideally be driven by a CMOS logic drive or
compatible. The drive circuitry should be supplied
with the same supply voltage as the Tx module.
Ordering Information:
Part No
T5-434-9-20
T5-434-5V
T5-434-5-20B
T5-434-3V
T5-434-3-20B
T5-434-128
Description
Tx 433.92MHz 9v 20Kbps
Tx 433.92MHz 5v 50Kbps
Tx 433.92MHz 5v 20Kbps ‘B part’
Tx 433.92MHz 3v 50Kbps
Tx 433.92MHz 3v 20Kbps ‘B part’
Tx 433.92MHz 5v 128Kbps
R5
12
34 5 67
Figure 2: Receiver
RF IN (pin 1)
50RF input from antenna, connect using
shortest possible route. This input is isolated from
the internal circuit using the air gap of the front
end SAW RF filter
RF GND (pin 2)
RF ground connection, preferable connected to a
solid plane.
RSSI (pin 3)
The Received Signal Strength Indicator provides a
DC output voltage proportional to the RF input
signal. The amplitude of the RSSI voltage
increases with increasing RF signal strength.
GND (pin 4)
Connect to power supply ground.
VCC (pin 5)
+Ve supply pin. Operation from a 5V supply able
to source6mA at less than Vp-p ripple.
AF (pin 6)
Audio frequency output.
DATA OUT (pin 7)
CMOS compatible output. This may be used to
drive external decoders. To reduce any noise on
this output ass a Add a 56pF cap from this pin to
GND.
Part No
R5-434-5-20
R5-434-5-20B
R5-434-5-50
R5-434-5-50B
R5-434-5-128
Description
Rx 433.92MHz 20Kbps
Rx 433.92MHz 20Kbps ‘B part’
Rx 433.92MHz 5V 50Kbps
Rx 433.92MHz 5V 50Kbps ‘B part’
Rx 433.92MHz 5V 128Kbps
DS305-7 Feb ‘04
©2004 REG No 277 4001, England.
Page 2




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