Product Info

3.23. Audio Interfaces ........................................................................................................................ 81
3.23.1.
Reference Circuit Design for Microphone Interfaces ..................................................... 82
3.23.2.
Reference Circuit Design for Earpiece Interface ........................................................... 83
3.23.3.
Reference Circuit Design for Headphone Interface ....................................................... 83
3.23.4.
Reference Circuit Design for Loudspeaker Interface..................................................... 84
3.23.5.
Audio Interfaces Design Considerations ........................................................................ 84
3.24.
Emergency Download Interface ................................................................................................ 85
4
Wi-Fi and BT ....................................................................................................................................... 86
4.1.
Wi-Fi Overview .......................................................................................................................... 86
4.1.1.
Wi-Fi Performance ......................................................................................................... 86
4.2.
BT Overview .............................................................................................................................. 88
4.2.1.
BT Performance ............................................................................................................. 89
5 GNSS ................................................................................................................................................... 90
5.1.
GNSS Performance .................................................................................................................. 90
5.2.
GNSS RF Design Guidelines .................................................................................................... 91
6 Antenna Interfaces ............................................................................................................................. 92
6.1.
Main/Rx-diversity Antenna Interfaces ....................................................................................... 92
6.1.1.
Main and Rx-diversity Antenna Interfaces Reference Design ....................................... 95
6.1.2.
Reference Design of RF Layout ..................................................................................... 96
6.2.
Wi-Fi/BT/FM Antenna Interface ................................................................................................ 98
6.3.
GNSS Antenna Interface ........................................................................................................... 99
6.3.1.
Recommended Circuit for Passive Antenna ................................................................ 100
6.3.2.
Recommended Circuit for Active Antenna ................................................................... 100
6.4.
Antenna Installation ................................................................................................................. 101
6.4.1.
Antenna Requirements ................................................................................................ 101
6.4.2.
Recommended RF Connector for Antenna Installation ............................................... 102
7 Electrical, Reliability and Radio Characteristics .......................................................................... 104
7.1.
Absolute Maximum Ratings .................................................................................................... 104
7.2.
Power Supply Ratings ............................................................................................................. 104
7.3.
Operation and Storage Temperatures ..................................................................................... 105
7.4.
Current Consumption .............................................................................................................. 106
7.5.
RF Output Power .................................................................................................................... 112
7.6.
RF Receiving Sensitivity ......................................................................................................... 115
7.7.
Electrostatic Discharge ........................................................................................................... 118
8 Mechanical Dimensions .................................................................................................................. 119
8.1.
Mechanical Dimensions of the Module ................................................................................... 119
8.2.
Recommended Footprint ........................................................................................................ 121
8.3.
Top and Bottom View of the Module ....................................................................................... 122
9 Storage, Manufacturing and Packaging ........................................................................................ 123
9.1.
Storage .................................................................................................................................... 123