RXM-433-RM Linx Technologies Inc, RXM-433-RM Datasheet - Page 6

• Manufacturer Part Number: RXM-433-RM
• Description: RECEIVER RF 433MHZ
• Manufacturer: Linx Technologies Inc
• Series: RMr

Specifications of RXM-433-RM

• Frequency: 433MHz
• Sensitivity: -100dBm
• Data Rate - Maximum: 10 kbps
• Modulation Or Protocol: ASK, OOK
• Applications: ISM, Garage Door Openers, RKE
• Current - Receiving: 14mA
• Data Interface: PCB, Through Hole
• Antenna Connector: Through Hole
• Voltage - Supply: 3.9 V ~ 9 V
• Operating Temperature: -10°C ~ 50°C
• Package / Case: 7-SIP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -
• Memory Size: -

POWER SUPPLY REQUIREMENTS
BOARD LAYOUT CONSIDERATIONS
Page 6
The receiver module requires a clean, well-
regulated voltage. While it is preferable to power
the unit from a battery, the unit can also be
powered from a power supply as long as noise
and ‘hash’ is less than 20mV. A 10µF capacitor
to ground on pin 5 (Vcc) and a 10
resistor will help in cases where the quality of
supply power is poor.
If you are at all familiar with RF devices you may be concerned about
s p e c i a l i zed layout requirements. Fo rt u n a t e l y, because of the care taken in
design, integrating an RM receiver into your design is ve ry stra i g h t fo r wa r d .B y
a d h e ring carefully to a few basic design and layout ru l e s, you can enjoy a
t r o u ble-free path to RF success.
Figure 7 shows the suggested PCB footprint for the RM receiver.
1)
RM receiver. This ground-plane can also be critical to the performance of your
antenna.
2)
possible, be isolated from all other components on your PCB. Specifically, high-
frequency circuitry such as crystal oscillators should be kept as far away as
possible from the receiver.
3)
PCB. If the receiver is to be mounted parallel to the board, it should be bent over
so that the side without components is closest to the PC board and the
component side is facing away from the PC board.
4)
component side to prevent detuning.
5)
possible. A simple trace is suitable for runs up to 1/4 inch for antennas with wide
bandwidth characteristics. For longer runs or to avoid detuning a high-Q narrow
bandwidth antenna such as a helical, use a 50-ohm coax or 50-ohm microstrip
transmission line as shown in the adjoining diagram.
Figure 7: Recommended pad layout
A ground-plane (as large as possible) should be placed directly under the
The RM receiver should, as much as reasonabl y
The module may be mounted vertically or bent horizontal to the product’s
No conductive items should be placed within .25 in. of the module’s
The trace from the receiver to the antenna should be kept as short as
series
Figure 6: Suggested supply filter