rx1-173.200-10 Radiometrix Ltd, rx1-173.200-10 Datasheet - Page 2

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

Functional description
The TX1 module is a two stage crystal controlled NBFM transmitter operating between 2.2V and 12V
at a current of 9.5mA. At 3V supply it delivers nominally +10dBm RF output. The SIL style TX1
measures 32 x 12 x 3.8 mm excluding the pins.
The RX1 module is a single conversion NBFM superhet receiver capable of handling data rates of up to
10kbps. It will operate from a supply of 2.7V to 12V and draws 12mA when receiving. A signal strength
(RSSI) output with greater than 80dB of range is provided. The SIL style RX1 measures 48 x 17.5 x 5.5
mm excluding the pins.
TX1 transmitter
En
Tx enable. 0.15V on this pin disables module (current <1 A), 1.7V enables module. Input impedance
1M
Vcc
DC +ve supply. Max ripple content 0.1V
0V
DC supply ground. Internally connected to pins 1, 3 and module screen.
TXD
DC-coupled modulation input. Accepts serial digital data at 0V to 3V levels.
See applications notes for suggested drive methods. Input impedance 100k
Radiometrix Ltd., TX1 & RX1 Data Sheet
Pin description
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 out
50
DC-isolated. See antenna section of
applications notes for details of suitable
antennas / feeds.
RF gnd
RF gnd
RF out
2
3
1
RF output to antenna. Internally
approx. Observe slew rate requirements (see applications notes).
Lowpass filter
(pin 4)
(pin 5)
(pin 6)
(pin 7)
(pins 1 & 3)
(pin 2)
PA
Bandpass filter
Fig.1: TX1 block diagram
P-P.
Decoupling is not generally required.
12.0
mm
x2
7 holes of 0.7 mm dia. pin spacing 2.54 mm
Radiometrix
TX1
1 2
Fig.2: TX1 physical dimensions
VCXO
3
pin spacing:
2.54 mm
15.24 mm
32 mm
4
7kHz LPF
5
regulator
Supply
6
7
nominal.
12.5
mm
PCB level
7 = TXD
1 = RF gnd
2 = RF out
3 = RF gnd
4 = En
5 = Vcc
6 = 0V
100k
3.8 mm
TXD
Vcc
En
0V
5
4
7
6
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