User's Guide
Table Of Contents
- Description
- Features
- Ordering Information
- Electrical Specifications
- Absolute Maximum Ratings
- Typical Performance Graphs
- Pin Assignments
- Pin Descriptions
- Theory of Operation
- Module Description
- Transceiver Operation
- Transmit Operation
- Receive Operation
- Acknowledgement
- Automatic Responses
- Permissions Mask
- The Pair Process
- Configuring the Status Lines
- External Amplifier Control
- Mode Indicator
- Reset to Factory Default
- Using the LVL_ADJ Line
- Receiver Duty Cycle
- Using the LATCH_EN Line
- Using the Low Power Features
- Triggered Transmissions
- Frequency Hopping
- The Command Data Interface
- Serial Setup Configuration for Stand-alone Operation
- Basic Hardware Operation
- Typical Applications
- Power Supply Requirements
- Antenna Considerations
- Helpful Application Notes from Linx
- Interference Considerations
- Pad Layout
- Board Layout Guidelines
- Microstrip Details
- Production Guidelines
- Hand Assembly
- Automated Assembly
- General Antenna Rules
- Common Antenna Styles
- Regulatory Considerations
– –
– –
48 49
140
200
165
470
230
230
165
ANT-916-SP
ANT-916-PW-LP
ANT-916-PW-RA
ANT-916-CW-QW
ANT-916-CW-HW
ANT-916-WRT-RPS
Microstrip Width = 24mil
Ground plane on Mid-Layer 1
Units are in mils
619
361
72
35
35
CONREVSMA003.062
380
320
216
Figure 46: HumRC
TM
Series Transceiver Castellation Version Reference Design
Figure 45: HumRC
TM
Series Transceiver Castellation Version Reference Design PCB Stack
Castellation Version Reference Design
The castellation connection for the antenna on the pre-certified version
allows the use of embedded antennas as well as removes the cost of
a cable assembly for the u.FL connector. However, the PCB design
and layer stack must follow one of the reference designs for the
certification on the HUM-900-RC-CAS to be valid. Figure 45 shows
the PCB layer stack that should be used. Figure 46 shows the layout and
routing designs for the different antenna options. Please see the antenna
data sheets for specific ground plane counterpoise requirements.
Top Layer
Dielectric 1
Mid-Layer 1
Dielectric 2
Mid-Layer 2
Dielectric 3
Bottom Layer
Layer Name Thickness Material
1.4mil
1.4mil
1.4mil
1.4mil
14.00mil
14.00mil
28.00mil
Copper
Copper
Copper
Copper
FR-4 (Er = 4.6)
FR-4 (Er = 4.6)
FR-4 (Er = 4.6)
Note: The PCB design and layer stack for the HUM-900-RC-CAS must
follow these reference designs for the pre-certification to be valid.
The HUM-900-RC-UFL and the HUM-900-RC-CAS must use one of
the antennas in Figure 44 in order for the certification to be valid.
The HUM-900-RC and HUM-2.4-RC have not been tested and require
full compliance testing in the end product as it will go to market.
All modules require unintentional radiator compliance testing in the end
product as it will go to market.