Product Info

Smart LTE Module Series
SC66 Hardware Design
SC66_Hardware_Design 4 / 139
3.18. LCM Interfaces .......................................................................................................................... 69
3.19. Touch Panel Interfaces ............................................................................................................. 74
3.20. Camera Interfaces..................................................................................................................... 75
3.20.1. Design Considerations ................................................................................................... 81
3.21. Sensor Interfaces ...................................................................................................................... 83
3.22. Audio Interfaces ........................................................................................................................ 84
3.22.1. Reference Circuit Design for Microphone Interface ....................................................... 85
3.22.2. Reference Circuit Design for Earpiece Interface ........................................................... 86
3.22.3. Reference Circuit Design for Headphone Interface ....................................................... 87
3.22.4. Reference Circuit Design for Loudspeaker Interface..................................................... 87
3.22.5. Audio Interfaces Design Considerations........................................................................ 87
3.23. Emergency Download Interface ................................................................................................ 88
4 Wi-Fi and BT ....................................................................................................................................... 89
4.1. Wi-Fi Overview .......................................................................................................................... 89
4.1.1. Wi-Fi Performance ......................................................................................................... 89
4.1.2. Wi-Fi MIMO Design Guidelines ...................................................................................... 91
4.2. BT Overview .............................................................................................................................. 91
4.2.1. BT Performance ............................................................................................................. 92
5 GNSS ................................................................................................................................................... 93
5.1. GNSS Performance .................................................................................................................. 93
5.2. GNSS RF Design Guidelines .................................................................................................... 94
6 Antenna Interfaces ............................................................................................................................. 95
6.1. Main/Rx-diversity Antenna Interfaces ....................................................................................... 95
6.1.1. Main and Rx-diversity Antenna Interfaces Reference Design ....................................... 99
6.1.2. Reference Design of RF Layout..................................................................................... 99
6.2. Wi-Fi/BT Antenna Interface ..................................................................................................... 101
6.3. GNSS Antenna Interface ......................................................................................................... 103
6.3.1. Recommended Circuit for Passive Antenna ................................................................ 104
6.3.2. Recommended Circuit for Active Antenna ................................................................... 104
6.4. Antenna Installation ................................................................................................................. 106
6.4.1. Antenna Requirements ................................................................................................ 106
6.4.2. Recommended RF Connector for Antenna Installation ............................................... 107
7 Electrical, Reliability and Radio Characteristics .......................................................................... 109
7.1. Absolute Maximum Ratings .................................................................................................... 109
7.2. Power Supply Ratings ............................................................................................................. 109
7.3. Operation and Storage Temperatures ..................................................................................... 110
7.4. Current Consumption ...............................................................................................................111
7.5. RF Output Power .................................................................................................................... 120
7.6. RF Receiving Sensitivity ......................................................................................................... 124
7.7. Electrostatic Discharge ........................................................................................................... 128
8 Mechanical Dimensions .................................................................................................................. 129
8.1. Mechanical Dimensions of the Module ................................................................................... 129