rx1-173.200-10 Radiometrix Ltd, rx1-173.200-10 Datasheet - Page 3

• Manufacturer Part Number: rx1-173.200-10
• Description: Left Tx1 Transmitter Right Rx1receiver
• Manufacturer: Radiometrix Ltd

RX1 receiver
En
Rx enable. 0.15V on this pin disables module (current <1 A), 1.7V enables module. Input impedance
1M
RSSI
Received Signal Strength Indicator with >80dB range. See applications notes for typical characteristics.
0V
DC supply ground. Internally connected to pins 2, 3 and module screen.
Vcc
DC +ve supply. Max ripple content 0.1V
AF out
Buffered and filtered analogue output from the FM demodulator. It has a standing DC bias of 1V and
400mV
External load should be >1k
RXD
Digital output from internal data slicer (squared version of the signal on pin 8). It may be used to drive
external decoders. The data is true data, i.e. as fed to the transmitter. Output is “open-collector”
format with internal 10k
Radiometrix Ltd., TX1 & RX1 Data Sheet
Pin description
RF in
50
Internally DC-isolated. See
antenna section of applications
notes for suggested antennas and
feeds.
RF gnd
RF ground, internally connected
to the module screen and pin 6
(0V). These pins should be
directly connected to the RF
return path - e.g. coax braid,
main PCB ground plane etc.
RF gnd
RF gnd
RF in
1
2
3
RF input from antenna.
approx. Observe slew rate requirements (see applications notes).
P-P
Preamp.
baseband signal. Useful as a test point or to drive external decoders (see applications notes).
(pin 4)
(pin 5)
(pin 6)
(pin 7)
(pin 8)
(pin 9)
(pin 1)
(pins 2 & 3)
Bandpass filter
Xtal osc/mult.
x2
Bandpass filter
pullup to Vcc (pin 7).
Mixer
// <100pF.
Fig.3: RX1 block diagram
IF amplification / filtering
P-P.
IF1
Decoupling is not generally required.
RX1
1
IF2
9 holes of 0.7 mm dia. pin spacing 2.54mm
2
Fig.4: RX1 physical dimensions
3
discriminator
pin spacing: 2.54 mm
FM
25.4 mm
Regulated
Rx supply
RSSI
5
7kHz LPF
48 mm
data slicer
Adaptive
AF buffer
Radiometrix
4
regulator
Supply
5
6
7
10k
8
AF out
9
RXD
8
Vcc
En
0V
9
7
4
6
2 = RF gnd
3 = RF gnd
7 = Vcc
8 = AF out
9 = RXD
1 = RF in
4 = En
5 = RSSI
6 = 0V
PCB level
5.5 mm
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