User's Manual
Table Of Contents
- Description
- Features
- Ordering Information
- Electrical Specifications
- Absolute Maximum Ratings
- Typical Performance Graphs
- Pin Assignments
- Pin Descriptions
- Theory of Operation
- Module Description
- Basic Hardware Operation
- Transceiver Operation
- Transmit Operation
- Receive Operation
- The Pair Process
- Permissions Mask
- Acknowledgement
- Mode Indicator
- Reset to Factory Default
- Using the RSSI Line
- Using the LATCH_EN Line
- Using the Low Power Features
- Using the LVL_ADJ Line
- The Command Data Interface
- Frequency Hopping
- Usage Guidelines for FCC Compliance
- Additional Testing Requirements
- Information to the user
- Antenna Selection
- Product Labeling
- FCC RF Exposure Statement
- 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
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1
Description
The TT Series transceiver is designed for
reliable bi-directional, long-range remote
control applications. It consists of a highly
optimized Frequency Hopping Spread
Spectrum (FHSS) RF transceiver and
integrated remote control transcoder. The
FHSS system allows higher power and,
therefore, longer range than narrowband radios. The TT Series transceiver
has obtained modular approval for the United States and Canada.
Eight status lines can be set up in any combination of inputs and outputs
for the transfer of button or contact states. A selectable acknowledgement
indicates that the transmission was successfully received. Operating in
the 902 to 928MHz frequency band, the module is capable of generating
+12.5dBm and achieves a typical sensitivity of -113dBm.
Primary settings are hardware-selectable, which eliminates the need for an
external microcontroller or other digital interface. For advanced features,
optional software configuration is provided by a UART interface; however,
no programming is required for basic operation.
Housed in a compact reflow-compatible SMD package, the transceiver
requires no external RF components except an antenna, which greatly
simplifies integration and lowers assembly costs.
Features
• FCC and Canada pre-certified
• Long range (1 mile line of sight)
• Low power consumption (19mA
RX, 35mA TX @ +12.5dBm)
• No programming required
• 8 status lines
• Bi-directional remote control
• No external RF components
required
• Selectable acknowledgements
• No production tuning required
• 2
32
possible addresses
• Serial interface for optional
software operation
TT Series
Remote Control Transceiver
Data Guide
Figure 1: Package Dimensions
Revised 3/7/13
0.131"
0.630"
1.150"
11
Model: TRM-900-TTModel: TRM-900-TT
Lot FX9nnTLot FX9nnT
FCC ID: OJMTRM900TTAFCC ID: OJMTRM900TTA
IC: 5840A-TRM900TTAIC: 5840A-TRM900TTA
A large-print version of this document is available at
www.linxtechnologies.com.
31 Product Labeling
31 FCC RF Exposure Statement
32 Typical Applications
34 Power Supply Requirements
34 Antenna Considerations
35 Helpful Application Notes from Linx
36 Interference Considerations
37 Pad Layout
37 Board Layout Guidelines
39 Microstrip Details
40 Production Guidelines
40 Hand Assembly
40 Automated Assembly
42 General Antenna Rules
44 Common Antenna Styles
46 Regulatory Considerations
Warning: This product incorporates numerous static-sensitive
components. Always wear an ESD wrist strap and observe proper ESD
handling procedures when working with this device. Failure to observe
this precaution may result in module damage or failure.