WRX2 receiver
Figure 2: WRX2 block diagram
47mm
8.5mm
17mm
WRX2
Radiometrix
30.48mm (1.2")
1
2
3
4
5
6
7
7 holes of 0.7mm dia pin spacing 2.54mm (0.1")
1 = RF in
2 = RF gnd
3 = RSSI
4 = 0V
5 = Vcc
6 = AF
7 = RXD
Figure 3: WRX2 pin-out and dimension (with can)
User interface
WRX2 pin
1
2
3
4
5
6
7
Name
RF in
RF gnd
RSSI
0V
Vcc
AF
RXD
Function
50Ω RF input from the antenna
RF Ground is internally connected to the module screen and pin 4 (0V).
These pins should be directly connected to the RF return path - e.g. coax
braid, main PCB ground plane etc.
Received Signal Strength Indicator with >60dB range.
DC level between 0.3V and 1.5V
Ground
2
2.9 – 15V DC power supply
600mV
pk-pk
audio. DC coupled, approx 1.4V bias
Received Data output from the internal data slicer. The data is squared
version of the Audio signal on pin 6 and is true data, i.e. as fed to the
transmitter. Output is "open-collector" format with internal 10kΩpull-up to
Vcc (pin 5). Suitable for bi-phase codes
Notes:
1. Pin out is as RX2A receiver
2. The unit can be offered in regulated (2.9 to 15v) or the cheaper +3v only (no regulator fitted)
versions
3. The standard version has no can, and mounts vertically on Batten and Allen leadframe pins. A
second version is for horizontal mounting with square header pins and an NRX2 case fitted
4. Standard version is 6mm thick. The horizontal (canned) unit is 8.5mm
Radiometrix Ltd.,
WRX2 data sheet
Page 2
RADIOMETRIX [ RADIOMETRIX LTD ]
