TR-916-SC-S Linx Technologies Inc, TR-916-SC-S Datasheet - Page 11

• Manufacturer Part Number: TR-916-SC-S
• Description: TRANSCEIVER RF 916MHZ 20PIN SMD
• Manufacturer: Linx Technologies Inc
• Series: SCr

Specifications of TR-916-SC-S

• Frequency: 916MHz
• Data Rate - Maximum: 33.6kbps
• Modulation Or Protocol: FM, FSK
• Applications: ISM, Garage Door Opener, Remote Controls, 2-way RKE
• Power - Output: -10dBm
• Sensitivity: -94dBm
• Voltage - Supply: 2.7 V ~ 13 V
• Current - Receiving: 15mA
• Current - Transmitting: 19mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: 0°C ~ 70°C
• Package / Case: Module
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: TR916SCS

BOARD LAYOUT CONSIDERATIONS
POWER SUPPLY CONSIDERATIONS
Figure 9: Recommended PCB layout
If you are at all familiar with RF devices, you may be concerned about
specialized layout requirements. Fortunately, because of the care taken by
Linx in the layout of the module’s PCB, integrating a TR-XXX-SC-S transceiver
into your design is very straightforward. By adhering carefully to a few basic
design and layout rules, you can enjoy a trouble-free path to RF success.
Figure 6 shows the suggested PCB footprint for the SC-Series transceiver.
A groundplane (as large as possible) should be placed directly under the SC-S
Transceiver. This groundplane can also be critical to the performance of your
antenna.
The SC-S should, as much as reasonably 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 module.
The trace from the transceiver to the antenna should be kept as short as
possible. A simple trace is suitable for runs up to 1/8 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 described in the following section.
The user must provide a clean source of power
to the module to ensure proper operation.
Power-supply noise will manifest itself as AM
and FM noise and can significantly affect
transceiver performance. Providing a clean
power supply for the module should be a high
design priority.
The TR-XXX-SC-S incorporates an on-board
Low-Dropout Regulator allowing the module to
operate over an input voltage range of 2.7 to 13
volts DC. The module’s power-supply line should have bypass capacitors
configured as shown in figure 8. Actual capacitor values will vary depending on
noise conditions.
Groundplane on Lower Layer
Figure 8: Suggested supply filter
V
1.3 "
cc
IN
>22 F
module
V
cc
0.100" Typ.
to
.1 F
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