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
– – – –
4
5
Absolute Maximum Ratings
Supply Voltage V
cc
−0.3 to +5.5 VDC
Any Input or Output Pin −0.3 to V
CC
+ 0.3 VDC
RF Input 0 dBm
Operating Temperature −40 to +85 ºC
Storage Temperature −55 to +125 ºC
Exceeding any of the limits of this section may lead to permanent damage to the device.
Furthermore, extended operation at these maximum ratings may reduce the life of this
device.
Absolute Maximum Ratings
Figure 4: Absolute Maximum Ratings
Typical Performance Graphs
TX Output Power (dBm)
LVL_ADJ Resistance (kΩ)
-17
-12
-7
-2
3
8
13
0 150 300450 600 750 900
Figure 6: TT Series Transceiver Output Power vs. LVL_ADJ Resistance
10
15
20
25
30
35
40
-20 -15 -10 -5 0510 15
Icc (mA)
TX Output Power (dBm)
-40°C
+25°C
+85°C
10
15
20
25
30
35
40
-20 -15 -10 -5 0510 15
Icc (mA)
TX Output Power (dBm)
-40°C
+25°C
+85°C
Figure 7: TT Series Transceiver Current Consumption vs. Transmitter Output Power at 3.3V
Figure 8: TT Series Transceiver Current Consumption vs. Transmitter Output Power at 5.5V
TX Vcc
TX Sx
TX MODE_IND
RX Sx
A BCDE FGH
RX MODE_IND
AB – TX Power up Response – <80ms
BC – RX Initial Response – 8 to 50ms with no interference
CD – Data Settle – 4 to 8us
EF – Data Update Delay During Active Session – 5 to 25ms
EG – Shutdown Duration – 25 to 342ms
GH – RX MODE_IND Drop – 6 to 8ms
V
ON
TT Series Transceiver Timings
Item Description Minimum Maximum
AB
TX Response from V
CC
or POWER_DOWN
1
80ms
TX Response from Status line while IU in idle
2
12ms
TX Response from Status line while IU / RU idle in RX
3
1ms
BC RX Initial Response 8ms 50ms
CD Data Settle 4µs 8µs
EF Data Update Delay During Active Session 5ms 25ms
EG Shutdown Duration 25ms 342ms
GH RX MODE_IND Drop 6ms 8ms
Figure 5: TT Series Timings
1. From module off to V
CC
applied
2. The module is set as an IU only and is in idle pending status line activation
3. The module is set as an IU and RU and is idling in receive mode pending status line
activation or receipt of a valid packet.